diff --git a/changelog/17086.txt b/changelog/17086.txt new file mode 100644 index 0000000000..ce221ad32c --- /dev/null +++ b/changelog/17086.txt @@ -0,0 +1,3 @@ +```release-note:change +ui: Upgrade Ember to version 4.4.0 +``` \ No newline at end of file diff --git a/ui/.ember-cli b/ui/.ember-cli index 4202ec1b2d..f6e59871ff 100644 --- a/ui/.ember-cli +++ b/ui/.ember-cli @@ -6,5 +6,11 @@ Setting `disableAnalytics` to true will prevent any data from being sent. */ "disableAnalytics": true, - "output-path": "../http/web_ui" + "output-path": "../http/web_ui", + + /** + Setting `isTypeScriptProject` to true will force the blueprint generators to generate TypeScript + rather than JavaScript by default, when a TypeScript version of a given blueprint is available. + */ + "isTypeScriptProject": false } diff --git a/ui/.eslintignore b/ui/.eslintignore index 5bd267e8e9..a292799def 100644 --- a/ui/.eslintignore +++ b/ui/.eslintignore @@ -20,6 +20,8 @@ # ember-try /.node_modules.ember-try/ /bower.json.ember-try +/npm-shrinkwrap.json.ember-try /package.json.ember-try - +/package-lock.json.ember-try +/yarn.lock.ember-try /tests/helpers/vault-keys.js diff --git a/ui/.eslintrc.js b/ui/.eslintrc.js index 9e626cbc17..8b55732d46 100644 --- a/ui/.eslintrc.js +++ b/ui/.eslintrc.js @@ -23,7 +23,7 @@ module.exports = { browser: true, }, rules: { - 'no-console': 'warn', + 'no-console': 'error', 'ember/no-mixins': 'warn', 'ember/no-new-mixins': 'off', // should be warn but then every line of the mixin is green // need to be fully glimmerized before these rules can be turned on @@ -63,7 +63,7 @@ module.exports = { }, }, { - // Test files: + // test files files: ['tests/**/*-test.{js,ts}'], extends: ['plugin:qunit/recommended'], }, diff --git a/ui/.github/workflows/ci.yml b/ui/.github/workflows/ci.yml new file mode 100644 index 0000000000..6287d32644 --- /dev/null +++ b/ui/.github/workflows/ci.yml @@ -0,0 +1,45 @@ +name: CI + +on: + push: + branches: + - main + - master + pull_request: {} + +concurrency: + group: ci-${{ github.head_ref || github.ref }} + cancel-in-progress: true + +jobs: + lint: + name: "Lint" + runs-on: ubuntu-latest + + steps: + - uses: actions/checkout@v3 + - name: Install Node + uses: actions/setup-node@v3 + with: + node-version: 12.x + cache: yarn + - name: Install Dependencies + run: yarn install --frozen-lockfile + - name: Lint + run: yarn lint + + test: + name: "Test" + runs-on: ubuntu-latest + + steps: + - uses: actions/checkout@v3 + - name: Install Node + uses: actions/setup-node@v3 + with: + node-version: 12.x + cache: yarn + - name: Install Dependencies + run: yarn install --frozen-lockfile + - name: Run Tests + run: yarn test diff --git a/ui/.gitignore b/ui/.gitignore index 0474208ee0..70da8c051d 100644 --- a/ui/.gitignore +++ b/ui/.gitignore @@ -22,4 +22,10 @@ package-lock.json # ember-try /.node_modules.ember-try/ /bower.json.ember-try +/npm-shrinkwrap.json.ember-try /package.json.ember-try +/package-lock.json.ember-try +/yarn.lock.ember-try + +# broccoli-debug +/DEBUG/ diff --git a/ui/.prettierignore b/ui/.prettierignore index 9221655522..4178fd571e 100644 --- a/ui/.prettierignore +++ b/ui/.prettierignore @@ -14,8 +14,12 @@ /coverage/ !.* .eslintcache +.lint-todo/ # ember-try /.node_modules.ember-try/ /bower.json.ember-try +/npm-shrinkwrap.json.ember-try /package.json.ember-try +/package-lock.json.ember-try +/yarn.lock.ember-try diff --git a/ui/.template-lintrc.js b/ui/.template-lintrc.js index f61b165724..e4e51b09aa 100644 --- a/ui/.template-lintrc.js +++ b/ui/.template-lintrc.js @@ -29,22 +29,18 @@ try { prettier: false, }; } catch (error) { - console.log(error); + console.log(error); // eslint-disable-line } module.exports = { plugins: ['ember-template-lint-plugin-prettier'], extends: ['recommended', 'ember-template-lint-plugin-prettier:recommended'], rules: { - 'no-bare-strings': 'off', 'no-action': 'off', - 'no-duplicate-landmark-elements': 'warn', 'no-implicit-this': { allow: ['supported-auth-backends'], }, 'require-input-label': 'off', - 'no-down-event-binding': 'warn', - 'self-closing-void-elements': 'off', }, ignore: ['lib/story-md', 'tests/**'], // ember language server vscode extension does not currently respect the ignore field diff --git a/ui/.yarn/releases/yarn-1.22.19.js b/ui/.yarn/releases/yarn-1.22.19.js new file mode 100755 index 0000000000..3144d7ffcb --- /dev/null +++ b/ui/.yarn/releases/yarn-1.22.19.js @@ -0,0 +1,175346 @@ +#!/usr/bin/env node +module.exports = /******/ (function (modules) { + // webpackBootstrap + /******/ // The module cache + /******/ var installedModules = {}; + /******/ + /******/ // The require function + /******/ function __webpack_require__(moduleId) { + /******/ + /******/ // Check if module is in cache + /******/ if (installedModules[moduleId]) { + /******/ return installedModules[moduleId].exports; + /******/ + } + /******/ // Create a new module (and put it into the cache) + /******/ var module = (installedModules[moduleId] = { + /******/ i: moduleId, + /******/ l: false, + /******/ exports: {}, + /******/ + }); + /******/ + /******/ // Execute the module function + /******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); + /******/ + /******/ // Flag the module as loaded + /******/ module.l = true; + /******/ + /******/ // Return the exports of the module + /******/ return module.exports; + /******/ + } + /******/ + /******/ + /******/ // expose the modules object (__webpack_modules__) + /******/ __webpack_require__.m = modules; + /******/ + /******/ // expose the module cache + /******/ __webpack_require__.c = installedModules; + /******/ + /******/ // identity function for calling harmony imports with the correct context + /******/ __webpack_require__.i = function (value) { + return value; + }; + /******/ + /******/ // define getter function for harmony exports + /******/ __webpack_require__.d = function (exports, name, getter) { + /******/ if (!__webpack_require__.o(exports, name)) { + /******/ Object.defineProperty(exports, name, { + /******/ configurable: false, + /******/ enumerable: true, + /******/ get: getter, + /******/ + }); + /******/ + } + /******/ + }; + /******/ + /******/ // getDefaultExport function for compatibility with non-harmony modules + /******/ __webpack_require__.n = function (module) { + /******/ var getter = + module && module.__esModule + ? /******/ function getDefault() { + return module['default']; + } + : /******/ function getModuleExports() { + return module; + }; + /******/ __webpack_require__.d(getter, 'a', getter); + /******/ return getter; + /******/ + }; + /******/ + /******/ // Object.prototype.hasOwnProperty.call + /******/ __webpack_require__.o = function (object, property) { + return Object.prototype.hasOwnProperty.call(object, property); + }; + /******/ + /******/ // __webpack_public_path__ + /******/ __webpack_require__.p = ''; + /******/ + /******/ // Load entry module and return exports + /******/ return __webpack_require__((__webpack_require__.s = 517)); + /******/ +})( + /************************************************************************/ + /******/ [ + /* 0 */ + /***/ function (module, exports) { + module.exports = require('path'); + + /***/ + }, + /* 1 */ + /***/ function (module, __webpack_exports__, __webpack_require__) { + 'use strict'; + /* harmony export (immutable) */ __webpack_exports__['a'] = __extends; + /* unused harmony export __assign */ + /* unused harmony export __rest */ + /* unused harmony export __decorate */ + /* unused harmony export __param */ + /* unused harmony export __metadata */ + /* unused harmony export __awaiter */ + /* unused harmony export __generator */ + /* unused harmony export __exportStar */ + /* unused harmony export __values */ + /* unused harmony export __read */ + /* unused harmony export __spread */ + /* unused harmony export __await */ + /* unused harmony export __asyncGenerator */ + /* unused harmony export __asyncDelegator */ + /* unused harmony export __asyncValues */ + /* unused harmony export __makeTemplateObject */ + /* unused harmony export __importStar */ + /* unused harmony export __importDefault */ + /*! ***************************************************************************** +Copyright (c) Microsoft Corporation. All rights reserved. +Licensed under the Apache License, Version 2.0 (the "License"); you may not use +this file except in compliance with the License. You may obtain a copy of the +License at http://www.apache.org/licenses/LICENSE-2.0 + +THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED +WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, +MERCHANTABLITY OR NON-INFRINGEMENT. + +See the Apache Version 2.0 License for specific language governing permissions +and limitations under the License. +***************************************************************************** */ + /* global Reflect, Promise */ + + var extendStatics = function (d, b) { + extendStatics = + Object.setPrototypeOf || + ({ __proto__: [] } instanceof Array && + function (d, b) { + d.__proto__ = b; + }) || + function (d, b) { + for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; + }; + return extendStatics(d, b); + }; + + function __extends(d, b) { + extendStatics(d, b); + function __() { + this.constructor = d; + } + d.prototype = b === null ? Object.create(b) : ((__.prototype = b.prototype), new __()); + } + + var __assign = function () { + __assign = + Object.assign || + function __assign(t) { + for (var s, i = 1, n = arguments.length; i < n; i++) { + s = arguments[i]; + for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p]; + } + return t; + }; + return __assign.apply(this, arguments); + }; + + function __rest(s, e) { + var t = {}; + for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p]; + if (s != null && typeof Object.getOwnPropertySymbols === 'function') + for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) + if (e.indexOf(p[i]) < 0) t[p[i]] = s[p[i]]; + return t; + } + + function __decorate(decorators, target, key, desc) { + var c = arguments.length, + r = c < 3 ? target : desc === null ? (desc = Object.getOwnPropertyDescriptor(target, key)) : desc, + d; + if (typeof Reflect === 'object' && typeof Reflect.decorate === 'function') + r = Reflect.decorate(decorators, target, key, desc); + else + for (var i = decorators.length - 1; i >= 0; i--) + if ((d = decorators[i])) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r; + return c > 3 && r && Object.defineProperty(target, key, r), r; + } + + function __param(paramIndex, decorator) { + return function (target, key) { + decorator(target, key, paramIndex); + }; + } + + function __metadata(metadataKey, metadataValue) { + if (typeof Reflect === 'object' && typeof Reflect.metadata === 'function') + return Reflect.metadata(metadataKey, metadataValue); + } + + function __awaiter(thisArg, _arguments, P, generator) { + return new (P || (P = Promise))(function (resolve, reject) { + function fulfilled(value) { + try { + step(generator.next(value)); + } catch (e) { + reject(e); + } + } + function rejected(value) { + try { + step(generator['throw'](value)); + } catch (e) { + reject(e); + } + } + function step(result) { + result.done + ? resolve(result.value) + : new P(function (resolve) { + resolve(result.value); + }).then(fulfilled, rejected); + } + step((generator = generator.apply(thisArg, _arguments || [])).next()); + }); + } + + function __generator(thisArg, body) { + var _ = { + label: 0, + sent: function () { + if (t[0] & 1) throw t[1]; + return t[1]; + }, + trys: [], + ops: [], + }, + f, + y, + t, + g; + return ( + (g = { next: verb(0), throw: verb(1), return: verb(2) }), + typeof Symbol === 'function' && + (g[Symbol.iterator] = function () { + return this; + }), + g + ); + function verb(n) { + return function (v) { + return step([n, v]); + }; + } + function step(op) { + if (f) throw new TypeError('Generator is already executing.'); + while (_) + try { + if ( + ((f = 1), + y && + (t = + op[0] & 2 + ? y['return'] + : op[0] + ? y['throw'] || ((t = y['return']) && t.call(y), 0) + : y.next) && + !(t = t.call(y, op[1])).done) + ) + return t; + if (((y = 0), t)) op = [op[0] & 2, t.value]; + switch (op[0]) { + case 0: + case 1: + t = op; + break; + case 4: + _.label++; + return { value: op[1], done: false }; + case 5: + _.label++; + y = op[1]; + op = [0]; + continue; + case 7: + op = _.ops.pop(); + _.trys.pop(); + continue; + default: + if ( + !((t = _.trys), (t = t.length > 0 && t[t.length - 1])) && + (op[0] === 6 || op[0] === 2) + ) { + _ = 0; + continue; + } + if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { + _.label = op[1]; + break; + } + if (op[0] === 6 && _.label < t[1]) { + _.label = t[1]; + t = op; + break; + } + if (t && _.label < t[2]) { + _.label = t[2]; + _.ops.push(op); + break; + } + if (t[2]) _.ops.pop(); + _.trys.pop(); + continue; + } + op = body.call(thisArg, _); + } catch (e) { + op = [6, e]; + y = 0; + } finally { + f = t = 0; + } + if (op[0] & 5) throw op[1]; + return { value: op[0] ? op[1] : void 0, done: true }; + } + } + + function __exportStar(m, exports) { + for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p]; + } + + function __values(o) { + var m = typeof Symbol === 'function' && o[Symbol.iterator], + i = 0; + if (m) return m.call(o); + return { + next: function () { + if (o && i >= o.length) o = void 0; + return { value: o && o[i++], done: !o }; + }, + }; + } + + function __read(o, n) { + var m = typeof Symbol === 'function' && o[Symbol.iterator]; + if (!m) return o; + var i = m.call(o), + r, + ar = [], + e; + try { + while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value); + } catch (error) { + e = { error: error }; + } finally { + try { + if (r && !r.done && (m = i['return'])) m.call(i); + } finally { + if (e) throw e.error; + } + } + return ar; + } + + function __spread() { + for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i])); + return ar; + } + + function __await(v) { + return this instanceof __await ? ((this.v = v), this) : new __await(v); + } + + function __asyncGenerator(thisArg, _arguments, generator) { + if (!Symbol.asyncIterator) throw new TypeError('Symbol.asyncIterator is not defined.'); + var g = generator.apply(thisArg, _arguments || []), + i, + q = []; + return ( + (i = {}), + verb('next'), + verb('throw'), + verb('return'), + (i[Symbol.asyncIterator] = function () { + return this; + }), + i + ); + function verb(n) { + if (g[n]) + i[n] = function (v) { + return new Promise(function (a, b) { + q.push([n, v, a, b]) > 1 || resume(n, v); + }); + }; + } + function resume(n, v) { + try { + step(g[n](v)); + } catch (e) { + settle(q[0][3], e); + } + } + function step(r) { + r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); + } + function fulfill(value) { + resume('next', value); + } + function reject(value) { + resume('throw', value); + } + function settle(f, v) { + if ((f(v), q.shift(), q.length)) resume(q[0][0], q[0][1]); + } + } + + function __asyncDelegator(o) { + var i, p; + return ( + (i = {}), + verb('next'), + verb('throw', function (e) { + throw e; + }), + verb('return'), + (i[Symbol.iterator] = function () { + return this; + }), + i + ); + function verb(n, f) { + i[n] = o[n] + ? function (v) { + return (p = !p) ? { value: __await(o[n](v)), done: n === 'return' } : f ? f(v) : v; + } + : f; + } + } + + function __asyncValues(o) { + if (!Symbol.asyncIterator) throw new TypeError('Symbol.asyncIterator is not defined.'); + var m = o[Symbol.asyncIterator], + i; + return m + ? m.call(o) + : ((o = typeof __values === 'function' ? __values(o) : o[Symbol.iterator]()), + (i = {}), + verb('next'), + verb('throw'), + verb('return'), + (i[Symbol.asyncIterator] = function () { + return this; + }), + i); + function verb(n) { + i[n] = + o[n] && + function (v) { + return new Promise(function (resolve, reject) { + (v = o[n](v)), settle(resolve, reject, v.done, v.value); + }); + }; + } + function settle(resolve, reject, d, v) { + Promise.resolve(v).then(function (v) { + resolve({ value: v, done: d }); + }, reject); + } + } + + function __makeTemplateObject(cooked, raw) { + if (Object.defineProperty) { + Object.defineProperty(cooked, 'raw', { value: raw }); + } else { + cooked.raw = raw; + } + return cooked; + } + + function __importStar(mod) { + if (mod && mod.__esModule) return mod; + var result = {}; + if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k]; + result.default = mod; + return result; + } + + function __importDefault(mod) { + return mod && mod.__esModule ? mod : { default: mod }; + } + + /***/ + }, + /* 2 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + exports.__esModule = true; + + var _promise = __webpack_require__(224); + + var _promise2 = _interopRequireDefault(_promise); + + function _interopRequireDefault(obj) { + return obj && obj.__esModule ? obj : { default: obj }; + } + + exports.default = function (fn) { + return function () { + var gen = fn.apply(this, arguments); + return new _promise2.default(function (resolve, reject) { + function step(key, arg) { + try { + var info = gen[key](arg); + var value = info.value; + } catch (error) { + reject(error); + return; + } + + if (info.done) { + resolve(value); + } else { + return _promise2.default.resolve(value).then( + function (value) { + step('next', value); + }, + function (err) { + step('throw', err); + } + ); + } + } + + return step('next'); + }); + }; + }; + + /***/ + }, + /* 3 */ + /***/ function (module, exports) { + module.exports = require('util'); + + /***/ + }, + /* 4 */ + /***/ function (module, exports) { + module.exports = require('fs'); + + /***/ + }, + /* 5 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + Object.defineProperty(exports, '__esModule', { + value: true, + }); + exports.getFirstSuitableFolder = + exports.readFirstAvailableStream = + exports.makeTempDir = + exports.hardlinksWork = + exports.writeFilePreservingEol = + exports.getFileSizeOnDisk = + exports.walk = + exports.symlink = + exports.find = + exports.readJsonAndFile = + exports.readJson = + exports.readFileAny = + exports.hardlinkBulk = + exports.copyBulk = + exports.unlink = + exports.glob = + exports.link = + exports.chmod = + exports.lstat = + exports.exists = + exports.mkdirp = + exports.stat = + exports.access = + exports.rename = + exports.readdir = + exports.realpath = + exports.readlink = + exports.writeFile = + exports.open = + exports.readFileBuffer = + exports.lockQueue = + exports.constants = + undefined; + + var _asyncToGenerator2; + + function _load_asyncToGenerator() { + return (_asyncToGenerator2 = _interopRequireDefault(__webpack_require__(2))); + } + + let buildActionsForCopy = (() => { + var _ref = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + queue, + events, + possibleExtraneous, + reporter + ) { + // + let build = (() => { + var _ref5 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (data) { + const src = data.src, + dest = data.dest, + type = data.type; + + const onFresh = data.onFresh || noop; + const onDone = data.onDone || noop; + + // TODO https://github.com/yarnpkg/yarn/issues/3751 + // related to bundled dependencies handling + if (files.has(dest.toLowerCase())) { + reporter.verbose( + `The case-insensitive file ${dest} shouldn't be copied twice in one bulk copy` + ); + } else { + files.add(dest.toLowerCase()); + } + + if (type === 'symlink') { + yield mkdirp((_path || _load_path()).default.dirname(dest)); + onFresh(); + actions.symlink.push({ + dest, + linkname: src, + }); + onDone(); + return; + } + + if (events.ignoreBasenames.indexOf((_path || _load_path()).default.basename(src)) >= 0) { + // ignored file + return; + } + + const srcStat = yield lstat(src); + let srcFiles; + + if (srcStat.isDirectory()) { + srcFiles = yield readdir(src); + } + + let destStat; + try { + // try accessing the destination + destStat = yield lstat(dest); + } catch (e) { + // proceed if destination doesn't exist, otherwise error + if (e.code !== 'ENOENT') { + throw e; + } + } + + // if destination exists + if (destStat) { + const bothSymlinks = srcStat.isSymbolicLink() && destStat.isSymbolicLink(); + const bothFolders = srcStat.isDirectory() && destStat.isDirectory(); + const bothFiles = srcStat.isFile() && destStat.isFile(); + + // EINVAL access errors sometimes happen which shouldn't because node shouldn't be giving + // us modes that aren't valid. investigate this, it's generally safe to proceed. + + /* if (srcStat.mode !== destStat.mode) { + try { + await access(dest, srcStat.mode); + } catch (err) {} + } */ + + if (bothFiles && artifactFiles.has(dest)) { + // this file gets changed during build, likely by a custom install script. Don't bother checking it. + onDone(); + reporter.verbose(reporter.lang('verboseFileSkipArtifact', src)); + return; + } + + if ( + bothFiles && + srcStat.size === destStat.size && + (0, (_fsNormalized || _load_fsNormalized()).fileDatesEqual)(srcStat.mtime, destStat.mtime) + ) { + // we can safely assume this is the same file + onDone(); + reporter.verbose(reporter.lang('verboseFileSkip', src, dest, srcStat.size, +srcStat.mtime)); + return; + } + + if (bothSymlinks) { + const srcReallink = yield readlink(src); + if (srcReallink === (yield readlink(dest))) { + // if both symlinks are the same then we can continue on + onDone(); + reporter.verbose(reporter.lang('verboseFileSkipSymlink', src, dest, srcReallink)); + return; + } + } + + if (bothFolders) { + // mark files that aren't in this folder as possibly extraneous + const destFiles = yield readdir(dest); + invariant(srcFiles, 'src files not initialised'); + + for ( + var _iterator4 = destFiles, + _isArray4 = Array.isArray(_iterator4), + _i4 = 0, + _iterator4 = _isArray4 ? _iterator4 : _iterator4[Symbol.iterator](); + ; + + ) { + var _ref6; + + if (_isArray4) { + if (_i4 >= _iterator4.length) break; + _ref6 = _iterator4[_i4++]; + } else { + _i4 = _iterator4.next(); + if (_i4.done) break; + _ref6 = _i4.value; + } + + const file = _ref6; + + if (srcFiles.indexOf(file) < 0) { + const loc = (_path || _load_path()).default.join(dest, file); + possibleExtraneous.add(loc); + + if ((yield lstat(loc)).isDirectory()) { + for ( + var _iterator5 = yield readdir(loc), + _isArray5 = Array.isArray(_iterator5), + _i5 = 0, + _iterator5 = _isArray5 ? _iterator5 : _iterator5[Symbol.iterator](); + ; + + ) { + var _ref7; + + if (_isArray5) { + if (_i5 >= _iterator5.length) break; + _ref7 = _iterator5[_i5++]; + } else { + _i5 = _iterator5.next(); + if (_i5.done) break; + _ref7 = _i5.value; + } + + const file = _ref7; + + possibleExtraneous.add((_path || _load_path()).default.join(loc, file)); + } + } + } + } + } + } + + if (destStat && destStat.isSymbolicLink()) { + yield (0, (_fsNormalized || _load_fsNormalized()).unlink)(dest); + destStat = null; + } + + if (srcStat.isSymbolicLink()) { + onFresh(); + const linkname = yield readlink(src); + actions.symlink.push({ + dest, + linkname, + }); + onDone(); + } else if (srcStat.isDirectory()) { + if (!destStat) { + reporter.verbose(reporter.lang('verboseFileFolder', dest)); + yield mkdirp(dest); + } + + const destParts = dest.split((_path || _load_path()).default.sep); + while (destParts.length) { + files.add(destParts.join((_path || _load_path()).default.sep).toLowerCase()); + destParts.pop(); + } + + // push all files to queue + invariant(srcFiles, 'src files not initialised'); + let remaining = srcFiles.length; + if (!remaining) { + onDone(); + } + for ( + var _iterator6 = srcFiles, + _isArray6 = Array.isArray(_iterator6), + _i6 = 0, + _iterator6 = _isArray6 ? _iterator6 : _iterator6[Symbol.iterator](); + ; + + ) { + var _ref8; + + if (_isArray6) { + if (_i6 >= _iterator6.length) break; + _ref8 = _iterator6[_i6++]; + } else { + _i6 = _iterator6.next(); + if (_i6.done) break; + _ref8 = _i6.value; + } + + const file = _ref8; + + queue.push({ + dest: (_path || _load_path()).default.join(dest, file), + onFresh, + onDone: (function (_onDone) { + function onDone() { + return _onDone.apply(this, arguments); + } + + onDone.toString = function () { + return _onDone.toString(); + }; + + return onDone; + })(function () { + if (--remaining === 0) { + onDone(); + } + }), + src: (_path || _load_path()).default.join(src, file), + }); + } + } else if (srcStat.isFile()) { + onFresh(); + actions.file.push({ + src, + dest, + atime: srcStat.atime, + mtime: srcStat.mtime, + mode: srcStat.mode, + }); + onDone(); + } else { + throw new Error(`unsure how to copy this: ${src}`); + } + }); + + return function build(_x5) { + return _ref5.apply(this, arguments); + }; + })(); + + const artifactFiles = new Set(events.artifactFiles || []); + const files = new Set(); + + // initialise events + for ( + var _iterator = queue, + _isArray = Array.isArray(_iterator), + _i = 0, + _iterator = _isArray ? _iterator : _iterator[Symbol.iterator](); + ; + + ) { + var _ref2; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref2 = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref2 = _i.value; + } + + const item = _ref2; + + const onDone = item.onDone; + item.onDone = function () { + events.onProgress(item.dest); + if (onDone) { + onDone(); + } + }; + } + events.onStart(queue.length); + + // start building actions + const actions = { + file: [], + symlink: [], + link: [], + }; + + // custom concurrency logic as we're always executing stacks of CONCURRENT_QUEUE_ITEMS queue items + // at a time due to the requirement to push items onto the queue + while (queue.length) { + const items = queue.splice(0, CONCURRENT_QUEUE_ITEMS); + yield Promise.all(items.map(build)); + } + + // simulate the existence of some files to prevent considering them extraneous + for ( + var _iterator2 = artifactFiles, + _isArray2 = Array.isArray(_iterator2), + _i2 = 0, + _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator](); + ; + + ) { + var _ref3; + + if (_isArray2) { + if (_i2 >= _iterator2.length) break; + _ref3 = _iterator2[_i2++]; + } else { + _i2 = _iterator2.next(); + if (_i2.done) break; + _ref3 = _i2.value; + } + + const file = _ref3; + + if (possibleExtraneous.has(file)) { + reporter.verbose(reporter.lang('verboseFilePhantomExtraneous', file)); + possibleExtraneous.delete(file); + } + } + + for ( + var _iterator3 = possibleExtraneous, + _isArray3 = Array.isArray(_iterator3), + _i3 = 0, + _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator](); + ; + + ) { + var _ref4; + + if (_isArray3) { + if (_i3 >= _iterator3.length) break; + _ref4 = _iterator3[_i3++]; + } else { + _i3 = _iterator3.next(); + if (_i3.done) break; + _ref4 = _i3.value; + } + + const loc = _ref4; + + if (files.has(loc.toLowerCase())) { + possibleExtraneous.delete(loc); + } + } + + return actions; + }); + + return function buildActionsForCopy(_x, _x2, _x3, _x4) { + return _ref.apply(this, arguments); + }; + })(); + + let buildActionsForHardlink = (() => { + var _ref9 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + queue, + events, + possibleExtraneous, + reporter + ) { + // + let build = (() => { + var _ref13 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (data) { + const src = data.src, + dest = data.dest; + + const onFresh = data.onFresh || noop; + const onDone = data.onDone || noop; + if (files.has(dest.toLowerCase())) { + // Fixes issue https://github.com/yarnpkg/yarn/issues/2734 + // When bulk hardlinking we have A -> B structure that we want to hardlink to A1 -> B1, + // package-linker passes that modules A1 and B1 need to be hardlinked, + // the recursive linking algorithm of A1 ends up scheduling files in B1 to be linked twice which will case + // an exception. + onDone(); + return; + } + files.add(dest.toLowerCase()); + + if (events.ignoreBasenames.indexOf((_path || _load_path()).default.basename(src)) >= 0) { + // ignored file + return; + } + + const srcStat = yield lstat(src); + let srcFiles; + + if (srcStat.isDirectory()) { + srcFiles = yield readdir(src); + } + + const destExists = yield exists(dest); + if (destExists) { + const destStat = yield lstat(dest); + + const bothSymlinks = srcStat.isSymbolicLink() && destStat.isSymbolicLink(); + const bothFolders = srcStat.isDirectory() && destStat.isDirectory(); + const bothFiles = srcStat.isFile() && destStat.isFile(); + + if (srcStat.mode !== destStat.mode) { + try { + yield access(dest, srcStat.mode); + } catch (err) { + // EINVAL access errors sometimes happen which shouldn't because node shouldn't be giving + // us modes that aren't valid. investigate this, it's generally safe to proceed. + reporter.verbose(err); + } + } + + if (bothFiles && artifactFiles.has(dest)) { + // this file gets changed during build, likely by a custom install script. Don't bother checking it. + onDone(); + reporter.verbose(reporter.lang('verboseFileSkipArtifact', src)); + return; + } + + // correct hardlink + if (bothFiles && srcStat.ino !== null && srcStat.ino === destStat.ino) { + onDone(); + reporter.verbose(reporter.lang('verboseFileSkip', src, dest, srcStat.ino)); + return; + } + + if (bothSymlinks) { + const srcReallink = yield readlink(src); + if (srcReallink === (yield readlink(dest))) { + // if both symlinks are the same then we can continue on + onDone(); + reporter.verbose(reporter.lang('verboseFileSkipSymlink', src, dest, srcReallink)); + return; + } + } + + if (bothFolders) { + // mark files that aren't in this folder as possibly extraneous + const destFiles = yield readdir(dest); + invariant(srcFiles, 'src files not initialised'); + + for ( + var _iterator10 = destFiles, + _isArray10 = Array.isArray(_iterator10), + _i10 = 0, + _iterator10 = _isArray10 ? _iterator10 : _iterator10[Symbol.iterator](); + ; + + ) { + var _ref14; + + if (_isArray10) { + if (_i10 >= _iterator10.length) break; + _ref14 = _iterator10[_i10++]; + } else { + _i10 = _iterator10.next(); + if (_i10.done) break; + _ref14 = _i10.value; + } + + const file = _ref14; + + if (srcFiles.indexOf(file) < 0) { + const loc = (_path || _load_path()).default.join(dest, file); + possibleExtraneous.add(loc); + + if ((yield lstat(loc)).isDirectory()) { + for ( + var _iterator11 = yield readdir(loc), + _isArray11 = Array.isArray(_iterator11), + _i11 = 0, + _iterator11 = _isArray11 ? _iterator11 : _iterator11[Symbol.iterator](); + ; + + ) { + var _ref15; + + if (_isArray11) { + if (_i11 >= _iterator11.length) break; + _ref15 = _iterator11[_i11++]; + } else { + _i11 = _iterator11.next(); + if (_i11.done) break; + _ref15 = _i11.value; + } + + const file = _ref15; + + possibleExtraneous.add((_path || _load_path()).default.join(loc, file)); + } + } + } + } + } + } + + if (srcStat.isSymbolicLink()) { + onFresh(); + const linkname = yield readlink(src); + actions.symlink.push({ + dest, + linkname, + }); + onDone(); + } else if (srcStat.isDirectory()) { + reporter.verbose(reporter.lang('verboseFileFolder', dest)); + yield mkdirp(dest); + + const destParts = dest.split((_path || _load_path()).default.sep); + while (destParts.length) { + files.add(destParts.join((_path || _load_path()).default.sep).toLowerCase()); + destParts.pop(); + } + + // push all files to queue + invariant(srcFiles, 'src files not initialised'); + let remaining = srcFiles.length; + if (!remaining) { + onDone(); + } + for ( + var _iterator12 = srcFiles, + _isArray12 = Array.isArray(_iterator12), + _i12 = 0, + _iterator12 = _isArray12 ? _iterator12 : _iterator12[Symbol.iterator](); + ; + + ) { + var _ref16; + + if (_isArray12) { + if (_i12 >= _iterator12.length) break; + _ref16 = _iterator12[_i12++]; + } else { + _i12 = _iterator12.next(); + if (_i12.done) break; + _ref16 = _i12.value; + } + + const file = _ref16; + + queue.push({ + onFresh, + src: (_path || _load_path()).default.join(src, file), + dest: (_path || _load_path()).default.join(dest, file), + onDone: (function (_onDone2) { + function onDone() { + return _onDone2.apply(this, arguments); + } + + onDone.toString = function () { + return _onDone2.toString(); + }; + + return onDone; + })(function () { + if (--remaining === 0) { + onDone(); + } + }), + }); + } + } else if (srcStat.isFile()) { + onFresh(); + actions.link.push({ + src, + dest, + removeDest: destExists, + }); + onDone(); + } else { + throw new Error(`unsure how to copy this: ${src}`); + } + }); + + return function build(_x10) { + return _ref13.apply(this, arguments); + }; + })(); + + const artifactFiles = new Set(events.artifactFiles || []); + const files = new Set(); + + // initialise events + for ( + var _iterator7 = queue, + _isArray7 = Array.isArray(_iterator7), + _i7 = 0, + _iterator7 = _isArray7 ? _iterator7 : _iterator7[Symbol.iterator](); + ; + + ) { + var _ref10; + + if (_isArray7) { + if (_i7 >= _iterator7.length) break; + _ref10 = _iterator7[_i7++]; + } else { + _i7 = _iterator7.next(); + if (_i7.done) break; + _ref10 = _i7.value; + } + + const item = _ref10; + + const onDone = item.onDone || noop; + item.onDone = function () { + events.onProgress(item.dest); + onDone(); + }; + } + events.onStart(queue.length); + + // start building actions + const actions = { + file: [], + symlink: [], + link: [], + }; + + // custom concurrency logic as we're always executing stacks of CONCURRENT_QUEUE_ITEMS queue items + // at a time due to the requirement to push items onto the queue + while (queue.length) { + const items = queue.splice(0, CONCURRENT_QUEUE_ITEMS); + yield Promise.all(items.map(build)); + } + + // simulate the existence of some files to prevent considering them extraneous + for ( + var _iterator8 = artifactFiles, + _isArray8 = Array.isArray(_iterator8), + _i8 = 0, + _iterator8 = _isArray8 ? _iterator8 : _iterator8[Symbol.iterator](); + ; + + ) { + var _ref11; + + if (_isArray8) { + if (_i8 >= _iterator8.length) break; + _ref11 = _iterator8[_i8++]; + } else { + _i8 = _iterator8.next(); + if (_i8.done) break; + _ref11 = _i8.value; + } + + const file = _ref11; + + if (possibleExtraneous.has(file)) { + reporter.verbose(reporter.lang('verboseFilePhantomExtraneous', file)); + possibleExtraneous.delete(file); + } + } + + for ( + var _iterator9 = possibleExtraneous, + _isArray9 = Array.isArray(_iterator9), + _i9 = 0, + _iterator9 = _isArray9 ? _iterator9 : _iterator9[Symbol.iterator](); + ; + + ) { + var _ref12; + + if (_isArray9) { + if (_i9 >= _iterator9.length) break; + _ref12 = _iterator9[_i9++]; + } else { + _i9 = _iterator9.next(); + if (_i9.done) break; + _ref12 = _i9.value; + } + + const loc = _ref12; + + if (files.has(loc.toLowerCase())) { + possibleExtraneous.delete(loc); + } + } + + return actions; + }); + + return function buildActionsForHardlink(_x6, _x7, _x8, _x9) { + return _ref9.apply(this, arguments); + }; + })(); + + let copyBulk = (exports.copyBulk = (() => { + var _ref17 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + queue, + reporter, + _events + ) { + const events = { + onStart: (_events && _events.onStart) || noop, + onProgress: (_events && _events.onProgress) || noop, + possibleExtraneous: _events ? _events.possibleExtraneous : new Set(), + ignoreBasenames: (_events && _events.ignoreBasenames) || [], + artifactFiles: (_events && _events.artifactFiles) || [], + }; + + const actions = yield buildActionsForCopy(queue, events, events.possibleExtraneous, reporter); + events.onStart(actions.file.length + actions.symlink.length + actions.link.length); + + const fileActions = actions.file; + + const currentlyWriting = new Map(); + + yield (_promise || _load_promise()).queue( + fileActions, + (() => { + var _ref18 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (data) { + let writePromise; + while ((writePromise = currentlyWriting.get(data.dest))) { + yield writePromise; + } + + reporter.verbose(reporter.lang('verboseFileCopy', data.src, data.dest)); + const copier = (0, (_fsNormalized || _load_fsNormalized()).copyFile)(data, function () { + return currentlyWriting.delete(data.dest); + }); + currentlyWriting.set(data.dest, copier); + events.onProgress(data.dest); + return copier; + }); + + return function (_x14) { + return _ref18.apply(this, arguments); + }; + })(), + CONCURRENT_QUEUE_ITEMS + ); + + // we need to copy symlinks last as they could reference files we were copying + const symlinkActions = actions.symlink; + yield (_promise || _load_promise()).queue(symlinkActions, function (data) { + const linkname = (_path || _load_path()).default.resolve( + (_path || _load_path()).default.dirname(data.dest), + data.linkname + ); + reporter.verbose(reporter.lang('verboseFileSymlink', data.dest, linkname)); + return symlink(linkname, data.dest); + }); + }); + + return function copyBulk(_x11, _x12, _x13) { + return _ref17.apply(this, arguments); + }; + })()); + + let hardlinkBulk = (exports.hardlinkBulk = (() => { + var _ref19 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + queue, + reporter, + _events + ) { + const events = { + onStart: (_events && _events.onStart) || noop, + onProgress: (_events && _events.onProgress) || noop, + possibleExtraneous: _events ? _events.possibleExtraneous : new Set(), + artifactFiles: (_events && _events.artifactFiles) || [], + ignoreBasenames: [], + }; + + const actions = yield buildActionsForHardlink(queue, events, events.possibleExtraneous, reporter); + events.onStart(actions.file.length + actions.symlink.length + actions.link.length); + + const fileActions = actions.link; + + yield (_promise || _load_promise()).queue( + fileActions, + (() => { + var _ref20 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (data) { + reporter.verbose(reporter.lang('verboseFileLink', data.src, data.dest)); + if (data.removeDest) { + yield (0, (_fsNormalized || _load_fsNormalized()).unlink)(data.dest); + } + yield link(data.src, data.dest); + }); + + return function (_x18) { + return _ref20.apply(this, arguments); + }; + })(), + CONCURRENT_QUEUE_ITEMS + ); + + // we need to copy symlinks last as they could reference files we were copying + const symlinkActions = actions.symlink; + yield (_promise || _load_promise()).queue(symlinkActions, function (data) { + const linkname = (_path || _load_path()).default.resolve( + (_path || _load_path()).default.dirname(data.dest), + data.linkname + ); + reporter.verbose(reporter.lang('verboseFileSymlink', data.dest, linkname)); + return symlink(linkname, data.dest); + }); + }); + + return function hardlinkBulk(_x15, _x16, _x17) { + return _ref19.apply(this, arguments); + }; + })()); + + let readFileAny = (exports.readFileAny = (() => { + var _ref21 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (files) { + for ( + var _iterator13 = files, + _isArray13 = Array.isArray(_iterator13), + _i13 = 0, + _iterator13 = _isArray13 ? _iterator13 : _iterator13[Symbol.iterator](); + ; + + ) { + var _ref22; + + if (_isArray13) { + if (_i13 >= _iterator13.length) break; + _ref22 = _iterator13[_i13++]; + } else { + _i13 = _iterator13.next(); + if (_i13.done) break; + _ref22 = _i13.value; + } + + const file = _ref22; + + if (yield exists(file)) { + return readFile(file); + } + } + return null; + }); + + return function readFileAny(_x19) { + return _ref21.apply(this, arguments); + }; + })()); + + let readJson = (exports.readJson = (() => { + var _ref23 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (loc) { + return (yield readJsonAndFile(loc)).object; + }); + + return function readJson(_x20) { + return _ref23.apply(this, arguments); + }; + })()); + + let readJsonAndFile = (exports.readJsonAndFile = (() => { + var _ref24 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (loc) { + const file = yield readFile(loc); + try { + return { + object: (0, (_map || _load_map()).default)(JSON.parse(stripBOM(file))), + content: file, + }; + } catch (err) { + err.message = `${loc}: ${err.message}`; + throw err; + } + }); + + return function readJsonAndFile(_x21) { + return _ref24.apply(this, arguments); + }; + })()); + + let find = (exports.find = (() => { + var _ref25 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (filename, dir) { + const parts = dir.split((_path || _load_path()).default.sep); + + while (parts.length) { + const loc = parts.concat(filename).join((_path || _load_path()).default.sep); + + if (yield exists(loc)) { + return loc; + } else { + parts.pop(); + } + } + + return false; + }); + + return function find(_x22, _x23) { + return _ref25.apply(this, arguments); + }; + })()); + + let symlink = (exports.symlink = (() => { + var _ref26 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (src, dest) { + if (process.platform !== 'win32') { + // use relative paths otherwise which will be retained if the directory is moved + src = (_path || _load_path()).default.relative( + (_path || _load_path()).default.dirname(dest), + src + ); + // When path.relative returns an empty string for the current directory, we should instead use + // '.', which is a valid fs.symlink target. + src = src || '.'; + } + + try { + const stats = yield lstat(dest); + if (stats.isSymbolicLink()) { + const resolved = dest; + if (resolved === src) { + return; + } + } + } catch (err) { + if (err.code !== 'ENOENT') { + throw err; + } + } + + // We use rimraf for unlink which never throws an ENOENT on missing target + yield (0, (_fsNormalized || _load_fsNormalized()).unlink)(dest); + + if (process.platform === 'win32') { + // use directory junctions if possible on win32, this requires absolute paths + yield fsSymlink(src, dest, 'junction'); + } else { + yield fsSymlink(src, dest); + } + }); + + return function symlink(_x24, _x25) { + return _ref26.apply(this, arguments); + }; + })()); + + let walk = (exports.walk = (() => { + var _ref27 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + dir, + relativeDir, + ignoreBasenames = new Set() + ) { + let files = []; + + let filenames = yield readdir(dir); + if (ignoreBasenames.size) { + filenames = filenames.filter(function (name) { + return !ignoreBasenames.has(name); + }); + } + + for ( + var _iterator14 = filenames, + _isArray14 = Array.isArray(_iterator14), + _i14 = 0, + _iterator14 = _isArray14 ? _iterator14 : _iterator14[Symbol.iterator](); + ; + + ) { + var _ref28; + + if (_isArray14) { + if (_i14 >= _iterator14.length) break; + _ref28 = _iterator14[_i14++]; + } else { + _i14 = _iterator14.next(); + if (_i14.done) break; + _ref28 = _i14.value; + } + + const name = _ref28; + + const relative = relativeDir ? (_path || _load_path()).default.join(relativeDir, name) : name; + const loc = (_path || _load_path()).default.join(dir, name); + const stat = yield lstat(loc); + + files.push({ + relative, + basename: name, + absolute: loc, + mtime: +stat.mtime, + }); + + if (stat.isDirectory()) { + files = files.concat(yield walk(loc, relative, ignoreBasenames)); + } + } + + return files; + }); + + return function walk(_x26, _x27) { + return _ref27.apply(this, arguments); + }; + })()); + + let getFileSizeOnDisk = (exports.getFileSizeOnDisk = (() => { + var _ref29 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (loc) { + const stat = yield lstat(loc); + const size = stat.size, + blockSize = stat.blksize; + + return Math.ceil(size / blockSize) * blockSize; + }); + + return function getFileSizeOnDisk(_x28) { + return _ref29.apply(this, arguments); + }; + })()); + + let getEolFromFile = (() => { + var _ref30 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (path) { + if (!(yield exists(path))) { + return undefined; + } + + const buffer = yield readFileBuffer(path); + + for (let i = 0; i < buffer.length; ++i) { + if (buffer[i] === cr) { + return '\r\n'; + } + if (buffer[i] === lf) { + return '\n'; + } + } + return undefined; + }); + + return function getEolFromFile(_x29) { + return _ref30.apply(this, arguments); + }; + })(); + + let writeFilePreservingEol = (exports.writeFilePreservingEol = (() => { + var _ref31 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (path, data) { + const eol = (yield getEolFromFile(path)) || (_os || _load_os()).default.EOL; + if (eol !== '\n') { + data = data.replace(/\n/g, eol); + } + yield writeFile(path, data); + }); + + return function writeFilePreservingEol(_x30, _x31) { + return _ref31.apply(this, arguments); + }; + })()); + + let hardlinksWork = (exports.hardlinksWork = (() => { + var _ref32 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (dir) { + const filename = 'test-file' + Math.random(); + const file = (_path || _load_path()).default.join(dir, filename); + const fileLink = (_path || _load_path()).default.join(dir, filename + '-link'); + try { + yield writeFile(file, 'test'); + yield link(file, fileLink); + } catch (err) { + return false; + } finally { + yield (0, (_fsNormalized || _load_fsNormalized()).unlink)(file); + yield (0, (_fsNormalized || _load_fsNormalized()).unlink)(fileLink); + } + return true; + }); + + return function hardlinksWork(_x32) { + return _ref32.apply(this, arguments); + }; + })()); + + // not a strict polyfill for Node's fs.mkdtemp + + let makeTempDir = (exports.makeTempDir = (() => { + var _ref33 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (prefix) { + const dir = (_path || _load_path()).default.join( + (_os || _load_os()).default.tmpdir(), + `yarn-${prefix || ''}-${Date.now()}-${Math.random()}` + ); + yield (0, (_fsNormalized || _load_fsNormalized()).unlink)(dir); + yield mkdirp(dir); + return dir; + }); + + return function makeTempDir(_x33) { + return _ref33.apply(this, arguments); + }; + })()); + + let readFirstAvailableStream = (exports.readFirstAvailableStream = (() => { + var _ref34 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* (paths) { + for ( + var _iterator15 = paths, + _isArray15 = Array.isArray(_iterator15), + _i15 = 0, + _iterator15 = _isArray15 ? _iterator15 : _iterator15[Symbol.iterator](); + ; + + ) { + var _ref35; + + if (_isArray15) { + if (_i15 >= _iterator15.length) break; + _ref35 = _iterator15[_i15++]; + } else { + _i15 = _iterator15.next(); + if (_i15.done) break; + _ref35 = _i15.value; + } + + const path = _ref35; + + try { + const fd = yield open(path, 'r'); + return (_fs || _load_fs()).default.createReadStream(path, { fd }); + } catch (err) { + // Try the next one + } + } + return null; + }); + + return function readFirstAvailableStream(_x34) { + return _ref34.apply(this, arguments); + }; + })()); + + let getFirstSuitableFolder = (exports.getFirstSuitableFolder = (() => { + var _ref36 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + paths, + mode = constants.W_OK | constants.X_OK + ) { + const result = { + skipped: [], + folder: null, + }; + + for ( + var _iterator16 = paths, + _isArray16 = Array.isArray(_iterator16), + _i16 = 0, + _iterator16 = _isArray16 ? _iterator16 : _iterator16[Symbol.iterator](); + ; + + ) { + var _ref37; + + if (_isArray16) { + if (_i16 >= _iterator16.length) break; + _ref37 = _iterator16[_i16++]; + } else { + _i16 = _iterator16.next(); + if (_i16.done) break; + _ref37 = _i16.value; + } + + const folder = _ref37; + + try { + yield mkdirp(folder); + yield access(folder, mode); + + result.folder = folder; + + return result; + } catch (error) { + result.skipped.push({ + error, + folder, + }); + } + } + return result; + }); + + return function getFirstSuitableFolder(_x35) { + return _ref36.apply(this, arguments); + }; + })()); + + exports.copy = copy; + exports.readFile = readFile; + exports.readFileRaw = readFileRaw; + exports.normalizeOS = normalizeOS; + + var _fs; + + function _load_fs() { + return (_fs = _interopRequireDefault(__webpack_require__(4))); + } + + var _glob; + + function _load_glob() { + return (_glob = _interopRequireDefault(__webpack_require__(99))); + } + + var _os; + + function _load_os() { + return (_os = _interopRequireDefault(__webpack_require__(46))); + } + + var _path; + + function _load_path() { + return (_path = _interopRequireDefault(__webpack_require__(0))); + } + + var _blockingQueue; + + function _load_blockingQueue() { + return (_blockingQueue = _interopRequireDefault(__webpack_require__(110))); + } + + var _promise; + + function _load_promise() { + return (_promise = _interopRequireWildcard(__webpack_require__(51))); + } + + var _promise2; + + function _load_promise2() { + return (_promise2 = __webpack_require__(51)); + } + + var _map; + + function _load_map() { + return (_map = _interopRequireDefault(__webpack_require__(29))); + } + + var _fsNormalized; + + function _load_fsNormalized() { + return (_fsNormalized = __webpack_require__(216)); + } + + function _interopRequireWildcard(obj) { + if (obj && obj.__esModule) { + return obj; + } else { + var newObj = {}; + if (obj != null) { + for (var key in obj) { + if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; + } + } + newObj.default = obj; + return newObj; + } + } + + function _interopRequireDefault(obj) { + return obj && obj.__esModule ? obj : { default: obj }; + } + + const constants = (exports.constants = + typeof (_fs || _load_fs()).default.constants !== 'undefined' + ? (_fs || _load_fs()).default.constants + : { + R_OK: (_fs || _load_fs()).default.R_OK, + W_OK: (_fs || _load_fs()).default.W_OK, + X_OK: (_fs || _load_fs()).default.X_OK, + }); + + const lockQueue = (exports.lockQueue = new (_blockingQueue || _load_blockingQueue()).default( + 'fs lock' + )); + + const readFileBuffer = (exports.readFileBuffer = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.readFile + )); + const open = (exports.open = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.open + )); + const writeFile = (exports.writeFile = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.writeFile + )); + const readlink = (exports.readlink = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.readlink + )); + const realpath = (exports.realpath = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.realpath + )); + const readdir = (exports.readdir = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.readdir + )); + const rename = (exports.rename = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.rename + )); + const access = (exports.access = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.access + )); + const stat = (exports.stat = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.stat + )); + const mkdirp = (exports.mkdirp = (0, (_promise2 || _load_promise2()).promisify)( + __webpack_require__(145) + )); + const exists = (exports.exists = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.exists, + true + )); + const lstat = (exports.lstat = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.lstat + )); + const chmod = (exports.chmod = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.chmod + )); + const link = (exports.link = (0, (_promise2 || _load_promise2()).promisify)( + (_fs || _load_fs()).default.link + )); + const glob = (exports.glob = (0, (_promise2 || _load_promise2()).promisify)( + (_glob || _load_glob()).default + )); + exports.unlink = (_fsNormalized || _load_fsNormalized()).unlink; + + // fs.copyFile uses the native file copying instructions on the system, performing much better + // than any JS-based solution and consumes fewer resources. Repeated testing to fine tune the + // concurrency level revealed 128 as the sweet spot on a quad-core, 16 CPU Intel system with SSD. + + const CONCURRENT_QUEUE_ITEMS = (_fs || _load_fs()).default.copyFile ? 128 : 4; + + const fsSymlink = (0, (_promise2 || _load_promise2()).promisify)((_fs || _load_fs()).default.symlink); + const invariant = __webpack_require__(9); + const stripBOM = __webpack_require__(160); + + const noop = () => {}; + + function copy(src, dest, reporter) { + return copyBulk([{ src, dest }], reporter); + } + + function _readFile(loc, encoding) { + return new Promise((resolve, reject) => { + (_fs || _load_fs()).default.readFile(loc, encoding, function (err, content) { + if (err) { + reject(err); + } else { + resolve(content); + } + }); + }); + } + + function readFile(loc) { + return _readFile(loc, 'utf8').then(normalizeOS); + } + + function readFileRaw(loc) { + return _readFile(loc, 'binary'); + } + + function normalizeOS(body) { + return body.replace(/\r\n/g, '\n'); + } + + const cr = '\r'.charCodeAt(0); + const lf = '\n'.charCodeAt(0); + + /***/ + }, + /* 6 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + Object.defineProperty(exports, '__esModule', { + value: true, + }); + class MessageError extends Error { + constructor(msg, code) { + super(msg); + this.code = code; + } + } + + exports.MessageError = MessageError; + class ProcessSpawnError extends MessageError { + constructor(msg, code, process) { + super(msg, code); + this.process = process; + } + } + + exports.ProcessSpawnError = ProcessSpawnError; + class SecurityError extends MessageError {} + + exports.SecurityError = SecurityError; + class ProcessTermError extends MessageError {} + + exports.ProcessTermError = ProcessTermError; + class ResponseError extends Error { + constructor(msg, responseCode) { + super(msg); + this.responseCode = responseCode; + } + } + + exports.ResponseError = ResponseError; + class OneTimePasswordError extends Error { + constructor(notice) { + super(); + this.notice = notice; + } + } + exports.OneTimePasswordError = OneTimePasswordError; + + /***/ + }, + /* 7 */ + /***/ function (module, __webpack_exports__, __webpack_require__) { + 'use strict'; + /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, 'a', function () { + return Subscriber; + }); + /* unused harmony export SafeSubscriber */ + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_tslib__ = __webpack_require__(1); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__util_isFunction__ = __webpack_require__(154); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__Observer__ = __webpack_require__(420); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__Subscription__ = __webpack_require__(25); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_4__internal_symbol_rxSubscriber__ = + __webpack_require__(321); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_5__config__ = __webpack_require__(186); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_6__util_hostReportError__ = __webpack_require__(323); + /** PURE_IMPORTS_START tslib,_util_isFunction,_Observer,_Subscription,_internal_symbol_rxSubscriber,_config,_util_hostReportError PURE_IMPORTS_END */ + + var Subscriber = /*@__PURE__*/ (function (_super) { + __WEBPACK_IMPORTED_MODULE_0_tslib__['a' /* __extends */](Subscriber, _super); + function Subscriber(destinationOrNext, error, complete) { + var _this = _super.call(this) || this; + _this.syncErrorValue = null; + _this.syncErrorThrown = false; + _this.syncErrorThrowable = false; + _this.isStopped = false; + _this._parentSubscription = null; + switch (arguments.length) { + case 0: + _this.destination = __WEBPACK_IMPORTED_MODULE_2__Observer__['a' /* empty */]; + break; + case 1: + if (!destinationOrNext) { + _this.destination = __WEBPACK_IMPORTED_MODULE_2__Observer__['a' /* empty */]; + break; + } + if (typeof destinationOrNext === 'object') { + if (destinationOrNext instanceof Subscriber) { + _this.syncErrorThrowable = destinationOrNext.syncErrorThrowable; + _this.destination = destinationOrNext; + destinationOrNext.add(_this); + } else { + _this.syncErrorThrowable = true; + _this.destination = new SafeSubscriber(_this, destinationOrNext); + } + break; + } + default: + _this.syncErrorThrowable = true; + _this.destination = new SafeSubscriber(_this, destinationOrNext, error, complete); + break; + } + return _this; + } + Subscriber.prototype[ + __WEBPACK_IMPORTED_MODULE_4__internal_symbol_rxSubscriber__['a' /* rxSubscriber */] + ] = function () { + return this; + }; + Subscriber.create = function (next, error, complete) { + var subscriber = new Subscriber(next, error, complete); + subscriber.syncErrorThrowable = false; + return subscriber; + }; + Subscriber.prototype.next = function (value) { + if (!this.isStopped) { + this._next(value); + } + }; + Subscriber.prototype.error = function (err) { + if (!this.isStopped) { + this.isStopped = true; + this._error(err); + } + }; + Subscriber.prototype.complete = function () { + if (!this.isStopped) { + this.isStopped = true; + this._complete(); + } + }; + Subscriber.prototype.unsubscribe = function () { + if (this.closed) { + return; + } + this.isStopped = true; + _super.prototype.unsubscribe.call(this); + }; + Subscriber.prototype._next = function (value) { + this.destination.next(value); + }; + Subscriber.prototype._error = function (err) { + this.destination.error(err); + this.unsubscribe(); + }; + Subscriber.prototype._complete = function () { + this.destination.complete(); + this.unsubscribe(); + }; + Subscriber.prototype._unsubscribeAndRecycle = function () { + var _a = this, + _parent = _a._parent, + _parents = _a._parents; + this._parent = null; + this._parents = null; + this.unsubscribe(); + this.closed = false; + this.isStopped = false; + this._parent = _parent; + this._parents = _parents; + this._parentSubscription = null; + return this; + }; + return Subscriber; + })(__WEBPACK_IMPORTED_MODULE_3__Subscription__['a' /* Subscription */]); + + var SafeSubscriber = /*@__PURE__*/ (function (_super) { + __WEBPACK_IMPORTED_MODULE_0_tslib__['a' /* __extends */](SafeSubscriber, _super); + function SafeSubscriber(_parentSubscriber, observerOrNext, error, complete) { + var _this = _super.call(this) || this; + _this._parentSubscriber = _parentSubscriber; + var next; + var context = _this; + if ( + __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_1__util_isFunction__['a' /* isFunction */])( + observerOrNext + ) + ) { + next = observerOrNext; + } else if (observerOrNext) { + next = observerOrNext.next; + error = observerOrNext.error; + complete = observerOrNext.complete; + if (observerOrNext !== __WEBPACK_IMPORTED_MODULE_2__Observer__['a' /* empty */]) { + context = Object.create(observerOrNext); + if ( + __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_1__util_isFunction__['a' /* isFunction */])( + context.unsubscribe + ) + ) { + _this.add(context.unsubscribe.bind(context)); + } + context.unsubscribe = _this.unsubscribe.bind(_this); + } + } + _this._context = context; + _this._next = next; + _this._error = error; + _this._complete = complete; + return _this; + } + SafeSubscriber.prototype.next = function (value) { + if (!this.isStopped && this._next) { + var _parentSubscriber = this._parentSubscriber; + if ( + !__WEBPACK_IMPORTED_MODULE_5__config__['a' /* config */] + .useDeprecatedSynchronousErrorHandling || + !_parentSubscriber.syncErrorThrowable + ) { + this.__tryOrUnsub(this._next, value); + } else if (this.__tryOrSetError(_parentSubscriber, this._next, value)) { + this.unsubscribe(); + } + } + }; + SafeSubscriber.prototype.error = function (err) { + if (!this.isStopped) { + var _parentSubscriber = this._parentSubscriber; + var useDeprecatedSynchronousErrorHandling = + __WEBPACK_IMPORTED_MODULE_5__config__['a' /* config */].useDeprecatedSynchronousErrorHandling; + if (this._error) { + if (!useDeprecatedSynchronousErrorHandling || !_parentSubscriber.syncErrorThrowable) { + this.__tryOrUnsub(this._error, err); + this.unsubscribe(); + } else { + this.__tryOrSetError(_parentSubscriber, this._error, err); + this.unsubscribe(); + } + } else if (!_parentSubscriber.syncErrorThrowable) { + this.unsubscribe(); + if (useDeprecatedSynchronousErrorHandling) { + throw err; + } + __webpack_require__.i( + __WEBPACK_IMPORTED_MODULE_6__util_hostReportError__['a' /* hostReportError */] + )(err); + } else { + if (useDeprecatedSynchronousErrorHandling) { + _parentSubscriber.syncErrorValue = err; + _parentSubscriber.syncErrorThrown = true; + } else { + __webpack_require__.i( + __WEBPACK_IMPORTED_MODULE_6__util_hostReportError__['a' /* hostReportError */] + )(err); + } + this.unsubscribe(); + } + } + }; + SafeSubscriber.prototype.complete = function () { + var _this = this; + if (!this.isStopped) { + var _parentSubscriber = this._parentSubscriber; + if (this._complete) { + var wrappedComplete = function () { + return _this._complete.call(_this._context); + }; + if ( + !__WEBPACK_IMPORTED_MODULE_5__config__['a' /* config */] + .useDeprecatedSynchronousErrorHandling || + !_parentSubscriber.syncErrorThrowable + ) { + this.__tryOrUnsub(wrappedComplete); + this.unsubscribe(); + } else { + this.__tryOrSetError(_parentSubscriber, wrappedComplete); + this.unsubscribe(); + } + } else { + this.unsubscribe(); + } + } + }; + SafeSubscriber.prototype.__tryOrUnsub = function (fn, value) { + try { + fn.call(this._context, value); + } catch (err) { + this.unsubscribe(); + if ( + __WEBPACK_IMPORTED_MODULE_5__config__['a' /* config */].useDeprecatedSynchronousErrorHandling + ) { + throw err; + } else { + __webpack_require__.i( + __WEBPACK_IMPORTED_MODULE_6__util_hostReportError__['a' /* hostReportError */] + )(err); + } + } + }; + SafeSubscriber.prototype.__tryOrSetError = function (parent, fn, value) { + if ( + !__WEBPACK_IMPORTED_MODULE_5__config__['a' /* config */].useDeprecatedSynchronousErrorHandling + ) { + throw new Error('bad call'); + } + try { + fn.call(this._context, value); + } catch (err) { + if ( + __WEBPACK_IMPORTED_MODULE_5__config__['a' /* config */].useDeprecatedSynchronousErrorHandling + ) { + parent.syncErrorValue = err; + parent.syncErrorThrown = true; + return true; + } else { + __webpack_require__.i( + __WEBPACK_IMPORTED_MODULE_6__util_hostReportError__['a' /* hostReportError */] + )(err); + return true; + } + } + return false; + }; + SafeSubscriber.prototype._unsubscribe = function () { + var _parentSubscriber = this._parentSubscriber; + this._context = null; + this._parentSubscriber = null; + _parentSubscriber.unsubscribe(); + }; + return SafeSubscriber; + })(Subscriber); + + //# sourceMappingURL=Subscriber.js.map + + /***/ + }, + /* 8 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + Object.defineProperty(exports, '__esModule', { + value: true, + }); + exports.getPathKey = getPathKey; + const os = __webpack_require__(46); + const path = __webpack_require__(0); + const userHome = __webpack_require__(67).default; + + var _require = __webpack_require__(222); + + const getCacheDir = _require.getCacheDir, + getConfigDir = _require.getConfigDir, + getDataDir = _require.getDataDir; + + const isWebpackBundle = __webpack_require__(278); + + const DEPENDENCY_TYPES = (exports.DEPENDENCY_TYPES = [ + 'devDependencies', + 'dependencies', + 'optionalDependencies', + 'peerDependencies', + ]); + const OWNED_DEPENDENCY_TYPES = (exports.OWNED_DEPENDENCY_TYPES = [ + 'devDependencies', + 'dependencies', + 'optionalDependencies', + ]); + + const RESOLUTIONS = (exports.RESOLUTIONS = 'resolutions'); + const MANIFEST_FIELDS = (exports.MANIFEST_FIELDS = [RESOLUTIONS, ...DEPENDENCY_TYPES]); + + const SUPPORTED_NODE_VERSIONS = (exports.SUPPORTED_NODE_VERSIONS = + '^4.8.0 || ^5.7.0 || ^6.2.2 || >=8.0.0'); + + const YARN_REGISTRY = (exports.YARN_REGISTRY = 'https://registry.yarnpkg.com'); + const NPM_REGISTRY_RE = (exports.NPM_REGISTRY_RE = /https?:\/\/registry\.npmjs\.org/g); + + const YARN_DOCS = (exports.YARN_DOCS = 'https://yarnpkg.com/en/docs/cli/'); + const YARN_INSTALLER_SH = (exports.YARN_INSTALLER_SH = 'https://yarnpkg.com/install.sh'); + const YARN_INSTALLER_MSI = (exports.YARN_INSTALLER_MSI = 'https://yarnpkg.com/latest.msi'); + + const SELF_UPDATE_VERSION_URL = (exports.SELF_UPDATE_VERSION_URL = + 'https://yarnpkg.com/latest-version'); + + // cache version, bump whenever we make backwards incompatible changes + const CACHE_VERSION = (exports.CACHE_VERSION = 6); + + // lockfile version, bump whenever we make backwards incompatible changes + const LOCKFILE_VERSION = (exports.LOCKFILE_VERSION = 1); + + // max amount of network requests to perform concurrently + const NETWORK_CONCURRENCY = (exports.NETWORK_CONCURRENCY = 8); + + // HTTP timeout used when downloading packages + const NETWORK_TIMEOUT = (exports.NETWORK_TIMEOUT = 30 * 1000); // in milliseconds + + // max amount of child processes to execute concurrently + const CHILD_CONCURRENCY = (exports.CHILD_CONCURRENCY = 5); + + const REQUIRED_PACKAGE_KEYS = (exports.REQUIRED_PACKAGE_KEYS = ['name', 'version', '_uid']); + + function getPreferredCacheDirectories() { + const preferredCacheDirectories = [getCacheDir()]; + + if (process.getuid) { + // $FlowFixMe: process.getuid exists, dammit + preferredCacheDirectories.push(path.join(os.tmpdir(), `.yarn-cache-${process.getuid()}`)); + } + + preferredCacheDirectories.push(path.join(os.tmpdir(), `.yarn-cache`)); + + return preferredCacheDirectories; + } + + const PREFERRED_MODULE_CACHE_DIRECTORIES = (exports.PREFERRED_MODULE_CACHE_DIRECTORIES = + getPreferredCacheDirectories()); + const CONFIG_DIRECTORY = (exports.CONFIG_DIRECTORY = getConfigDir()); + const DATA_DIRECTORY = (exports.DATA_DIRECTORY = getDataDir()); + const LINK_REGISTRY_DIRECTORY = (exports.LINK_REGISTRY_DIRECTORY = path.join(DATA_DIRECTORY, 'link')); + const GLOBAL_MODULE_DIRECTORY = (exports.GLOBAL_MODULE_DIRECTORY = path.join(DATA_DIRECTORY, 'global')); + + const NODE_BIN_PATH = (exports.NODE_BIN_PATH = process.execPath); + const YARN_BIN_PATH = (exports.YARN_BIN_PATH = getYarnBinPath()); + + // Webpack needs to be configured with node.__dirname/__filename = false + function getYarnBinPath() { + if (isWebpackBundle) { + return __filename; + } else { + return path.join(__dirname, '..', 'bin', 'yarn.js'); + } + } + + const NODE_MODULES_FOLDER = (exports.NODE_MODULES_FOLDER = 'node_modules'); + const NODE_PACKAGE_JSON = (exports.NODE_PACKAGE_JSON = 'package.json'); + + const PNP_FILENAME = (exports.PNP_FILENAME = '.pnp.js'); + + const POSIX_GLOBAL_PREFIX = (exports.POSIX_GLOBAL_PREFIX = `${process.env.DESTDIR || ''}/usr/local`); + const FALLBACK_GLOBAL_PREFIX = (exports.FALLBACK_GLOBAL_PREFIX = path.join(userHome, '.yarn')); + + const META_FOLDER = (exports.META_FOLDER = '.yarn-meta'); + const INTEGRITY_FILENAME = (exports.INTEGRITY_FILENAME = '.yarn-integrity'); + const LOCKFILE_FILENAME = (exports.LOCKFILE_FILENAME = 'yarn.lock'); + const METADATA_FILENAME = (exports.METADATA_FILENAME = '.yarn-metadata.json'); + const TARBALL_FILENAME = (exports.TARBALL_FILENAME = '.yarn-tarball.tgz'); + const CLEAN_FILENAME = (exports.CLEAN_FILENAME = '.yarnclean'); + + const NPM_LOCK_FILENAME = (exports.NPM_LOCK_FILENAME = 'package-lock.json'); + const NPM_SHRINKWRAP_FILENAME = (exports.NPM_SHRINKWRAP_FILENAME = 'npm-shrinkwrap.json'); + + const DEFAULT_INDENT = (exports.DEFAULT_INDENT = ' '); + const SINGLE_INSTANCE_PORT = (exports.SINGLE_INSTANCE_PORT = 31997); + const SINGLE_INSTANCE_FILENAME = (exports.SINGLE_INSTANCE_FILENAME = '.yarn-single-instance'); + + const ENV_PATH_KEY = (exports.ENV_PATH_KEY = getPathKey(process.platform, process.env)); + + function getPathKey(platform, env) { + let pathKey = 'PATH'; + + // windows calls its path "Path" usually, but this is not guaranteed. + if (platform === 'win32') { + pathKey = 'Path'; + + for (const key in env) { + if (key.toLowerCase() === 'path') { + pathKey = key; + } + } + } + + return pathKey; + } + + const VERSION_COLOR_SCHEME = (exports.VERSION_COLOR_SCHEME = { + major: 'red', + premajor: 'red', + minor: 'yellow', + preminor: 'yellow', + patch: 'green', + prepatch: 'green', + prerelease: 'red', + unchanged: 'white', + unknown: 'red', + }); + + /***/ + }, + /* 9 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + /** + * Copyright (c) 2013-present, Facebook, Inc. + * + * This source code is licensed under the MIT license found in the + * LICENSE file in the root directory of this source tree. + */ + + /** + * Use invariant() to assert state which your program assumes to be true. + * + * Provide sprintf-style format (only %s is supported) and arguments + * to provide information about what broke and what you were + * expecting. + * + * The invariant message will be stripped in production, but the invariant + * will remain to ensure logic does not differ in production. + */ + + var NODE_ENV = process.env.NODE_ENV; + + var invariant = function (condition, format, a, b, c, d, e, f) { + if (NODE_ENV !== 'production') { + if (format === undefined) { + throw new Error('invariant requires an error message argument'); + } + } + + if (!condition) { + var error; + if (format === undefined) { + error = new Error( + 'Minified exception occurred; use the non-minified dev environment ' + + 'for the full error message and additional helpful warnings.' + ); + } else { + var args = [a, b, c, d, e, f]; + var argIndex = 0; + error = new Error( + format.replace(/%s/g, function () { + return args[argIndex++]; + }) + ); + error.name = 'Invariant Violation'; + } + + error.framesToPop = 1; // we don't care about invariant's own frame + throw error; + } + }; + + module.exports = invariant; + + /***/ + }, + /* 10 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + var YAMLException = __webpack_require__(55); + + var TYPE_CONSTRUCTOR_OPTIONS = [ + 'kind', + 'resolve', + 'construct', + 'instanceOf', + 'predicate', + 'represent', + 'defaultStyle', + 'styleAliases', + ]; + + var YAML_NODE_KINDS = ['scalar', 'sequence', 'mapping']; + + function compileStyleAliases(map) { + var result = {}; + + if (map !== null) { + Object.keys(map).forEach(function (style) { + map[style].forEach(function (alias) { + result[String(alias)] = style; + }); + }); + } + + return result; + } + + function Type(tag, options) { + options = options || {}; + + Object.keys(options).forEach(function (name) { + if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) { + throw new YAMLException( + 'Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.' + ); + } + }); + + // TODO: Add tag format check. + this.tag = tag; + this.kind = options['kind'] || null; + this.resolve = + options['resolve'] || + function () { + return true; + }; + this.construct = + options['construct'] || + function (data) { + return data; + }; + this.instanceOf = options['instanceOf'] || null; + this.predicate = options['predicate'] || null; + this.represent = options['represent'] || null; + this.defaultStyle = options['defaultStyle'] || null; + this.styleAliases = compileStyleAliases(options['styleAliases'] || null); + + if (YAML_NODE_KINDS.indexOf(this.kind) === -1) { + throw new YAMLException( + 'Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.' + ); + } + } + + module.exports = Type; + + /***/ + }, + /* 11 */ + /***/ function (module, exports) { + module.exports = require('crypto'); + + /***/ + }, + /* 12 */ + /***/ function (module, __webpack_exports__, __webpack_require__) { + 'use strict'; + /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, 'a', function () { + return Observable; + }); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__util_canReportError__ = __webpack_require__(322); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__util_toSubscriber__ = __webpack_require__(932); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__internal_symbol_observable__ = + __webpack_require__(118); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__util_pipe__ = __webpack_require__(324); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_4__config__ = __webpack_require__(186); + /** PURE_IMPORTS_START _util_canReportError,_util_toSubscriber,_internal_symbol_observable,_util_pipe,_config PURE_IMPORTS_END */ + + var Observable = /*@__PURE__*/ (function () { + function Observable(subscribe) { + this._isScalar = false; + if (subscribe) { + this._subscribe = subscribe; + } + } + Observable.prototype.lift = function (operator) { + var observable = new Observable(); + observable.source = this; + observable.operator = operator; + return observable; + }; + Observable.prototype.subscribe = function (observerOrNext, error, complete) { + var operator = this.operator; + var sink = __webpack_require__.i( + __WEBPACK_IMPORTED_MODULE_1__util_toSubscriber__['a' /* toSubscriber */] + )(observerOrNext, error, complete); + if (operator) { + operator.call(sink, this.source); + } else { + sink.add( + this.source || + (__WEBPACK_IMPORTED_MODULE_4__config__['a' /* config */] + .useDeprecatedSynchronousErrorHandling && + !sink.syncErrorThrowable) + ? this._subscribe(sink) + : this._trySubscribe(sink) + ); + } + if (__WEBPACK_IMPORTED_MODULE_4__config__['a' /* config */].useDeprecatedSynchronousErrorHandling) { + if (sink.syncErrorThrowable) { + sink.syncErrorThrowable = false; + if (sink.syncErrorThrown) { + throw sink.syncErrorValue; + } + } + } + return sink; + }; + Observable.prototype._trySubscribe = function (sink) { + try { + return this._subscribe(sink); + } catch (err) { + if ( + __WEBPACK_IMPORTED_MODULE_4__config__['a' /* config */].useDeprecatedSynchronousErrorHandling + ) { + sink.syncErrorThrown = true; + sink.syncErrorValue = err; + } + if ( + __webpack_require__.i( + __WEBPACK_IMPORTED_MODULE_0__util_canReportError__['a' /* canReportError */] + )(sink) + ) { + sink.error(err); + } else { + console.warn(err); + } + } + }; + Observable.prototype.forEach = function (next, promiseCtor) { + var _this = this; + promiseCtor = getPromiseCtor(promiseCtor); + return new promiseCtor(function (resolve, reject) { + var subscription; + subscription = _this.subscribe( + function (value) { + try { + next(value); + } catch (err) { + reject(err); + if (subscription) { + subscription.unsubscribe(); + } + } + }, + reject, + resolve + ); + }); + }; + Observable.prototype._subscribe = function (subscriber) { + var source = this.source; + return source && source.subscribe(subscriber); + }; + Observable.prototype[ + __WEBPACK_IMPORTED_MODULE_2__internal_symbol_observable__['a' /* observable */] + ] = function () { + return this; + }; + Observable.prototype.pipe = function () { + var operations = []; + for (var _i = 0; _i < arguments.length; _i++) { + operations[_i] = arguments[_i]; + } + if (operations.length === 0) { + return this; + } + return __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_3__util_pipe__['b' /* pipeFromArray */])( + operations + )(this); + }; + Observable.prototype.toPromise = function (promiseCtor) { + var _this = this; + promiseCtor = getPromiseCtor(promiseCtor); + return new promiseCtor(function (resolve, reject) { + var value; + _this.subscribe( + function (x) { + return (value = x); + }, + function (err) { + return reject(err); + }, + function () { + return resolve(value); + } + ); + }); + }; + Observable.create = function (subscribe) { + return new Observable(subscribe); + }; + return Observable; + })(); + + function getPromiseCtor(promiseCtor) { + if (!promiseCtor) { + promiseCtor = __WEBPACK_IMPORTED_MODULE_4__config__['a' /* config */].Promise || Promise; + } + if (!promiseCtor) { + throw new Error('no Promise impl found'); + } + return promiseCtor; + } + //# sourceMappingURL=Observable.js.map + + /***/ + }, + /* 13 */ + /***/ function (module, __webpack_exports__, __webpack_require__) { + 'use strict'; + /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, 'a', function () { + return OuterSubscriber; + }); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_tslib__ = __webpack_require__(1); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__Subscriber__ = __webpack_require__(7); + /** PURE_IMPORTS_START tslib,_Subscriber PURE_IMPORTS_END */ + + var OuterSubscriber = /*@__PURE__*/ (function (_super) { + __WEBPACK_IMPORTED_MODULE_0_tslib__['a' /* __extends */](OuterSubscriber, _super); + function OuterSubscriber() { + return (_super !== null && _super.apply(this, arguments)) || this; + } + OuterSubscriber.prototype.notifyNext = function ( + outerValue, + innerValue, + outerIndex, + innerIndex, + innerSub + ) { + this.destination.next(innerValue); + }; + OuterSubscriber.prototype.notifyError = function (error, innerSub) { + this.destination.error(error); + }; + OuterSubscriber.prototype.notifyComplete = function (innerSub) { + this.destination.complete(); + }; + return OuterSubscriber; + })(__WEBPACK_IMPORTED_MODULE_1__Subscriber__['a' /* Subscriber */]); + + //# sourceMappingURL=OuterSubscriber.js.map + + /***/ + }, + /* 14 */ + /***/ function (module, __webpack_exports__, __webpack_require__) { + 'use strict'; + /* harmony export (immutable) */ __webpack_exports__['a'] = subscribeToResult; + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__InnerSubscriber__ = __webpack_require__(84); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__subscribeTo__ = __webpack_require__(446); + /** PURE_IMPORTS_START _InnerSubscriber,_subscribeTo PURE_IMPORTS_END */ + + function subscribeToResult(outerSubscriber, result, outerValue, outerIndex, destination) { + if (destination === void 0) { + destination = new __WEBPACK_IMPORTED_MODULE_0__InnerSubscriber__['a' /* InnerSubscriber */]( + outerSubscriber, + outerValue, + outerIndex + ); + } + if (destination.closed) { + return; + } + return __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_1__subscribeTo__['a' /* subscribeTo */])( + result + )(destination); + } + //# sourceMappingURL=subscribeToResult.js.map + + /***/ + }, + /* 15 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + /* eslint-disable node/no-deprecated-api */ + + var buffer = __webpack_require__(64); + var Buffer = buffer.Buffer; + + var safer = {}; + + var key; + + for (key in buffer) { + if (!buffer.hasOwnProperty(key)) continue; + if (key === 'SlowBuffer' || key === 'Buffer') continue; + safer[key] = buffer[key]; + } + + var Safer = (safer.Buffer = {}); + for (key in Buffer) { + if (!Buffer.hasOwnProperty(key)) continue; + if (key === 'allocUnsafe' || key === 'allocUnsafeSlow') continue; + Safer[key] = Buffer[key]; + } + + safer.Buffer.prototype = Buffer.prototype; + + if (!Safer.from || Safer.from === Uint8Array.from) { + Safer.from = function (value, encodingOrOffset, length) { + if (typeof value === 'number') { + throw new TypeError( + 'The "value" argument must not be of type number. Received type ' + typeof value + ); + } + if (value && typeof value.length === 'undefined') { + throw new TypeError( + 'The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type ' + + typeof value + ); + } + return Buffer(value, encodingOrOffset, length); + }; + } + + if (!Safer.alloc) { + Safer.alloc = function (size, fill, encoding) { + if (typeof size !== 'number') { + throw new TypeError('The "size" argument must be of type number. Received type ' + typeof size); + } + if (size < 0 || size >= 2 * (1 << 30)) { + throw new RangeError('The value "' + size + '" is invalid for option "size"'); + } + var buf = Buffer(size); + if (!fill || fill.length === 0) { + buf.fill(0); + } else if (typeof encoding === 'string') { + buf.fill(fill, encoding); + } else { + buf.fill(fill); + } + return buf; + }; + } + + if (!safer.kStringMaxLength) { + try { + safer.kStringMaxLength = process.binding('buffer').kStringMaxLength; + } catch (e) { + // we can't determine kStringMaxLength in environments where process.binding + // is unsupported, so let's not set it + } + } + + if (!safer.constants) { + safer.constants = { + MAX_LENGTH: safer.kMaxLength, + }; + if (safer.kStringMaxLength) { + safer.constants.MAX_STRING_LENGTH = safer.kStringMaxLength; + } + } + + module.exports = safer; + + /***/ + }, + /* 16 */ + /***/ function (module, exports, __webpack_require__) { + // Copyright (c) 2012, Mark Cavage. All rights reserved. + // Copyright 2015 Joyent, Inc. + + var assert = __webpack_require__(28); + var Stream = __webpack_require__(23).Stream; + var util = __webpack_require__(3); + + ///--- Globals + + /* JSSTYLED */ + var UUID_REGEXP = /^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$/; + + ///--- Internal + + function _capitalize(str) { + return str.charAt(0).toUpperCase() + str.slice(1); + } + + function _toss(name, expected, oper, arg, actual) { + throw new assert.AssertionError({ + message: util.format('%s (%s) is required', name, expected), + actual: actual === undefined ? typeof arg : actual(arg), + expected: expected, + operator: oper || '===', + stackStartFunction: _toss.caller, + }); + } + + function _getClass(arg) { + return Object.prototype.toString.call(arg).slice(8, -1); + } + + function noop() { + // Why even bother with asserts? + } + + ///--- Exports + + var types = { + bool: { + check: function (arg) { + return typeof arg === 'boolean'; + }, + }, + func: { + check: function (arg) { + return typeof arg === 'function'; + }, + }, + string: { + check: function (arg) { + return typeof arg === 'string'; + }, + }, + object: { + check: function (arg) { + return typeof arg === 'object' && arg !== null; + }, + }, + number: { + check: function (arg) { + return typeof arg === 'number' && !isNaN(arg); + }, + }, + finite: { + check: function (arg) { + return typeof arg === 'number' && !isNaN(arg) && isFinite(arg); + }, + }, + buffer: { + check: function (arg) { + return Buffer.isBuffer(arg); + }, + operator: 'Buffer.isBuffer', + }, + array: { + check: function (arg) { + return Array.isArray(arg); + }, + operator: 'Array.isArray', + }, + stream: { + check: function (arg) { + return arg instanceof Stream; + }, + operator: 'instanceof', + actual: _getClass, + }, + date: { + check: function (arg) { + return arg instanceof Date; + }, + operator: 'instanceof', + actual: _getClass, + }, + regexp: { + check: function (arg) { + return arg instanceof RegExp; + }, + operator: 'instanceof', + actual: _getClass, + }, + uuid: { + check: function (arg) { + return typeof arg === 'string' && UUID_REGEXP.test(arg); + }, + operator: 'isUUID', + }, + }; + + function _setExports(ndebug) { + var keys = Object.keys(types); + var out; + + /* re-export standard assert */ + if (process.env.NODE_NDEBUG) { + out = noop; + } else { + out = function (arg, msg) { + if (!arg) { + _toss(msg, 'true', arg); + } + }; + } + + /* standard checks */ + keys.forEach(function (k) { + if (ndebug) { + out[k] = noop; + return; + } + var type = types[k]; + out[k] = function (arg, msg) { + if (!type.check(arg)) { + _toss(msg, k, type.operator, arg, type.actual); + } + }; + }); + + /* optional checks */ + keys.forEach(function (k) { + var name = 'optional' + _capitalize(k); + if (ndebug) { + out[name] = noop; + return; + } + var type = types[k]; + out[name] = function (arg, msg) { + if (arg === undefined || arg === null) { + return; + } + if (!type.check(arg)) { + _toss(msg, k, type.operator, arg, type.actual); + } + }; + }); + + /* arrayOf checks */ + keys.forEach(function (k) { + var name = 'arrayOf' + _capitalize(k); + if (ndebug) { + out[name] = noop; + return; + } + var type = types[k]; + var expected = '[' + k + ']'; + out[name] = function (arg, msg) { + if (!Array.isArray(arg)) { + _toss(msg, expected, type.operator, arg, type.actual); + } + var i; + for (i = 0; i < arg.length; i++) { + if (!type.check(arg[i])) { + _toss(msg, expected, type.operator, arg, type.actual); + } + } + }; + }); + + /* optionalArrayOf checks */ + keys.forEach(function (k) { + var name = 'optionalArrayOf' + _capitalize(k); + if (ndebug) { + out[name] = noop; + return; + } + var type = types[k]; + var expected = '[' + k + ']'; + out[name] = function (arg, msg) { + if (arg === undefined || arg === null) { + return; + } + if (!Array.isArray(arg)) { + _toss(msg, expected, type.operator, arg, type.actual); + } + var i; + for (i = 0; i < arg.length; i++) { + if (!type.check(arg[i])) { + _toss(msg, expected, type.operator, arg, type.actual); + } + } + }; + }); + + /* re-export built-in assertions */ + Object.keys(assert).forEach(function (k) { + if (k === 'AssertionError') { + out[k] = assert[k]; + return; + } + if (ndebug) { + out[k] = noop; + return; + } + out[k] = assert[k]; + }); + + /* export ourselves (for unit tests _only_) */ + out._setExports = _setExports; + + return out; + } + + module.exports = _setExports(process.env.NODE_NDEBUG); + + /***/ + }, + /* 17 */ + /***/ function (module, exports) { + // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028 + var global = (module.exports = + typeof window != 'undefined' && window.Math == Math + ? window + : typeof self != 'undefined' && self.Math == Math + ? self + : // eslint-disable-next-line no-new-func + Function('return this')()); + if (typeof __g == 'number') __g = global; // eslint-disable-line no-undef + + /***/ + }, + /* 18 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + Object.defineProperty(exports, '__esModule', { + value: true, + }); + exports.sortAlpha = sortAlpha; + exports.sortOptionsByFlags = sortOptionsByFlags; + exports.entries = entries; + exports.removePrefix = removePrefix; + exports.removeSuffix = removeSuffix; + exports.addSuffix = addSuffix; + exports.hyphenate = hyphenate; + exports.camelCase = camelCase; + exports.compareSortedArrays = compareSortedArrays; + exports.sleep = sleep; + const _camelCase = __webpack_require__(227); + + function sortAlpha(a, b) { + // sort alphabetically in a deterministic way + const shortLen = Math.min(a.length, b.length); + for (let i = 0; i < shortLen; i++) { + const aChar = a.charCodeAt(i); + const bChar = b.charCodeAt(i); + if (aChar !== bChar) { + return aChar - bChar; + } + } + return a.length - b.length; + } + + function sortOptionsByFlags(a, b) { + const aOpt = a.flags.replace(/-/g, ''); + const bOpt = b.flags.replace(/-/g, ''); + return sortAlpha(aOpt, bOpt); + } + + function entries(obj) { + const entries = []; + if (obj) { + for (const key in obj) { + entries.push([key, obj[key]]); + } + } + return entries; + } + + function removePrefix(pattern, prefix) { + if (pattern.startsWith(prefix)) { + pattern = pattern.slice(prefix.length); + } + + return pattern; + } + + function removeSuffix(pattern, suffix) { + if (pattern.endsWith(suffix)) { + return pattern.slice(0, -suffix.length); + } + + return pattern; + } + + function addSuffix(pattern, suffix) { + if (!pattern.endsWith(suffix)) { + return pattern + suffix; + } + + return pattern; + } + + function hyphenate(str) { + return str.replace(/[A-Z]/g, (match) => { + return '-' + match.charAt(0).toLowerCase(); + }); + } + + function camelCase(str) { + if (/[A-Z]/.test(str)) { + return null; + } else { + return _camelCase(str); + } + } + + function compareSortedArrays(array1, array2) { + if (array1.length !== array2.length) { + return false; + } + for (let i = 0, len = array1.length; i < len; i++) { + if (array1[i] !== array2[i]) { + return false; + } + } + return true; + } + + function sleep(ms) { + return new Promise((resolve) => { + setTimeout(resolve, ms); + }); + } + + /***/ + }, + /* 19 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + Object.defineProperty(exports, '__esModule', { + value: true, + }); + exports.stringify = exports.parse = undefined; + + var _asyncToGenerator2; + + function _load_asyncToGenerator() { + return (_asyncToGenerator2 = _interopRequireDefault(__webpack_require__(2))); + } + + var _parse; + + function _load_parse() { + return (_parse = __webpack_require__(106)); + } + + Object.defineProperty(exports, 'parse', { + enumerable: true, + get: function get() { + return _interopRequireDefault(_parse || _load_parse()).default; + }, + }); + + var _stringify; + + function _load_stringify() { + return (_stringify = __webpack_require__(200)); + } + + Object.defineProperty(exports, 'stringify', { + enumerable: true, + get: function get() { + return _interopRequireDefault(_stringify || _load_stringify()).default; + }, + }); + exports.implodeEntry = implodeEntry; + exports.explodeEntry = explodeEntry; + + var _misc; + + function _load_misc() { + return (_misc = __webpack_require__(18)); + } + + var _normalizePattern; + + function _load_normalizePattern() { + return (_normalizePattern = __webpack_require__(37)); + } + + var _parse2; + + function _load_parse2() { + return (_parse2 = _interopRequireDefault(__webpack_require__(106))); + } + + var _constants; + + function _load_constants() { + return (_constants = __webpack_require__(8)); + } + + var _fs; + + function _load_fs() { + return (_fs = _interopRequireWildcard(__webpack_require__(5))); + } + + function _interopRequireWildcard(obj) { + if (obj && obj.__esModule) { + return obj; + } else { + var newObj = {}; + if (obj != null) { + for (var key in obj) { + if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; + } + } + newObj.default = obj; + return newObj; + } + } + + function _interopRequireDefault(obj) { + return obj && obj.__esModule ? obj : { default: obj }; + } + + const invariant = __webpack_require__(9); + + const path = __webpack_require__(0); + const ssri = __webpack_require__(65); + + function getName(pattern) { + return (0, (_normalizePattern || _load_normalizePattern()).normalizePattern)(pattern).name; + } + + function blankObjectUndefined(obj) { + return obj && Object.keys(obj).length ? obj : undefined; + } + + function keyForRemote(remote) { + return ( + remote.resolved || (remote.reference && remote.hash ? `${remote.reference}#${remote.hash}` : null) + ); + } + + function serializeIntegrity(integrity) { + // We need this because `Integrity.toString()` does not use sorting to ensure a stable string output + // See https://git.io/vx2Hy + return integrity.toString().split(' ').sort().join(' '); + } + + function implodeEntry(pattern, obj) { + const inferredName = getName(pattern); + const integrity = obj.integrity ? serializeIntegrity(obj.integrity) : ''; + const imploded = { + name: inferredName === obj.name ? undefined : obj.name, + version: obj.version, + uid: obj.uid === obj.version ? undefined : obj.uid, + resolved: obj.resolved, + registry: obj.registry === 'npm' ? undefined : obj.registry, + dependencies: blankObjectUndefined(obj.dependencies), + optionalDependencies: blankObjectUndefined(obj.optionalDependencies), + permissions: blankObjectUndefined(obj.permissions), + prebuiltVariants: blankObjectUndefined(obj.prebuiltVariants), + }; + if (integrity) { + imploded.integrity = integrity; + } + return imploded; + } + + function explodeEntry(pattern, obj) { + obj.optionalDependencies = obj.optionalDependencies || {}; + obj.dependencies = obj.dependencies || {}; + obj.uid = obj.uid || obj.version; + obj.permissions = obj.permissions || {}; + obj.registry = obj.registry || 'npm'; + obj.name = obj.name || getName(pattern); + const integrity = obj.integrity; + if (integrity && integrity.isIntegrity) { + obj.integrity = ssri.parse(integrity); + } + return obj; + } + + class Lockfile { + constructor({ cache, source, parseResultType } = {}) { + this.source = source || ''; + this.cache = cache; + this.parseResultType = parseResultType; + } + + // source string if the `cache` was parsed + + // if true, we're parsing an old yarn file and need to update integrity fields + hasEntriesExistWithoutIntegrity() { + if (!this.cache) { + return false; + } + + for (const key in this.cache) { + // $FlowFixMe - `this.cache` is clearly defined at this point + if (!/^.*@(file:|http)/.test(key) && this.cache[key] && !this.cache[key].integrity) { + return true; + } + } + + return false; + } + + static fromDirectory(dir, reporter) { + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + // read the manifest in this directory + const lockfileLoc = path.join(dir, (_constants || _load_constants()).LOCKFILE_FILENAME); + + let lockfile; + let rawLockfile = ''; + let parseResult; + + if (yield (_fs || _load_fs()).exists(lockfileLoc)) { + rawLockfile = yield (_fs || _load_fs()).readFile(lockfileLoc); + parseResult = (0, (_parse2 || _load_parse2()).default)(rawLockfile, lockfileLoc); + + if (reporter) { + if (parseResult.type === 'merge') { + reporter.info(reporter.lang('lockfileMerged')); + } else if (parseResult.type === 'conflict') { + reporter.warn(reporter.lang('lockfileConflict')); + } + } + + lockfile = parseResult.object; + } else if (reporter) { + reporter.info(reporter.lang('noLockfileFound')); + } + + if (lockfile && lockfile.__metadata) { + const lockfilev2 = lockfile; + lockfile = {}; + } + + return new Lockfile({ + cache: lockfile, + source: rawLockfile, + parseResultType: parseResult && parseResult.type, + }); + })(); + } + + getLocked(pattern) { + const cache = this.cache; + if (!cache) { + return undefined; + } + + const shrunk = pattern in cache && cache[pattern]; + + if (typeof shrunk === 'string') { + return this.getLocked(shrunk); + } else if (shrunk) { + explodeEntry(pattern, shrunk); + return shrunk; + } + + return undefined; + } + + removePattern(pattern) { + const cache = this.cache; + if (!cache) { + return; + } + delete cache[pattern]; + } + + getLockfile(patterns) { + const lockfile = {}; + const seen = new Map(); + + // order by name so that lockfile manifest is assigned to the first dependency with this manifest + // the others that have the same remoteKey will just refer to the first + // ordering allows for consistency in lockfile when it is serialized + const sortedPatternsKeys = Object.keys(patterns).sort((_misc || _load_misc()).sortAlpha); + + for ( + var _iterator = sortedPatternsKeys, + _isArray = Array.isArray(_iterator), + _i = 0, + _iterator = _isArray ? _iterator : _iterator[Symbol.iterator](); + ; + + ) { + var _ref; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref = _i.value; + } + + const pattern = _ref; + + const pkg = patterns[pattern]; + const remote = pkg._remote, + ref = pkg._reference; + + invariant(ref, 'Package is missing a reference'); + invariant(remote, 'Package is missing a remote'); + + const remoteKey = keyForRemote(remote); + const seenPattern = remoteKey && seen.get(remoteKey); + if (seenPattern) { + // no point in duplicating it + lockfile[pattern] = seenPattern; + + // if we're relying on our name being inferred and two of the patterns have + // different inferred names then we need to set it + if (!seenPattern.name && getName(pattern) !== pkg.name) { + seenPattern.name = pkg.name; + } + continue; + } + const obj = implodeEntry(pattern, { + name: pkg.name, + version: pkg.version, + uid: pkg._uid, + resolved: remote.resolved, + integrity: remote.integrity, + registry: remote.registry, + dependencies: pkg.dependencies, + peerDependencies: pkg.peerDependencies, + optionalDependencies: pkg.optionalDependencies, + permissions: ref.permissions, + prebuiltVariants: pkg.prebuiltVariants, + }); + + lockfile[pattern] = obj; + + if (remoteKey) { + seen.set(remoteKey, obj); + } + } + + return lockfile; + } + } + exports.default = Lockfile; + + /***/ + }, + /* 20 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + exports.__esModule = true; + + var _assign = __webpack_require__(559); + + var _assign2 = _interopRequireDefault(_assign); + + function _interopRequireDefault(obj) { + return obj && obj.__esModule ? obj : { default: obj }; + } + + exports.default = + _assign2.default || + function (target) { + for (var i = 1; i < arguments.length; i++) { + var source = arguments[i]; + + for (var key in source) { + if (Object.prototype.hasOwnProperty.call(source, key)) { + target[key] = source[key]; + } + } + } + + return target; + }; + + /***/ + }, + /* 21 */ + /***/ function (module, exports, __webpack_require__) { + var store = __webpack_require__(133)('wks'); + var uid = __webpack_require__(137); + var Symbol = __webpack_require__(17).Symbol; + var USE_SYMBOL = typeof Symbol == 'function'; + + var $exports = (module.exports = function (name) { + return ( + store[name] || + (store[name] = (USE_SYMBOL && Symbol[name]) || (USE_SYMBOL ? Symbol : uid)('Symbol.' + name)) + ); + }); + + $exports.store = store; + + /***/ + }, + /* 22 */ + /***/ function (module, exports) { + exports = module.exports = SemVer; + + // The debug function is excluded entirely from the minified version. + /* nomin */ var debug; + /* nomin */ if ( + typeof process === 'object' && + /* nomin */ process.env && + /* nomin */ process.env.NODE_DEBUG && + /* nomin */ /\bsemver\b/i.test(process.env.NODE_DEBUG) + ) + /* nomin */ debug = function () { + /* nomin */ var args = Array.prototype.slice.call(arguments, 0); + /* nomin */ args.unshift('SEMVER'); + /* nomin */ console.log.apply(console, args); + /* nomin */ + }; + /* nomin */ + /* nomin */ else debug = function () {}; + + // Note: this is the semver.org version of the spec that it implements + // Not necessarily the package version of this code. + exports.SEMVER_SPEC_VERSION = '2.0.0'; + + var MAX_LENGTH = 256; + var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991; + + // Max safe segment length for coercion. + var MAX_SAFE_COMPONENT_LENGTH = 16; + + // The actual regexps go on exports.re + var re = (exports.re = []); + var src = (exports.src = []); + var R = 0; + + // The following Regular Expressions can be used for tokenizing, + // validating, and parsing SemVer version strings. + + // ## Numeric Identifier + // A single `0`, or a non-zero digit followed by zero or more digits. + + var NUMERICIDENTIFIER = R++; + src[NUMERICIDENTIFIER] = '0|[1-9]\\d*'; + var NUMERICIDENTIFIERLOOSE = R++; + src[NUMERICIDENTIFIERLOOSE] = '[0-9]+'; + + // ## Non-numeric Identifier + // Zero or more digits, followed by a letter or hyphen, and then zero or + // more letters, digits, or hyphens. + + var NONNUMERICIDENTIFIER = R++; + src[NONNUMERICIDENTIFIER] = '\\d*[a-zA-Z-][a-zA-Z0-9-]*'; + + // ## Main Version + // Three dot-separated numeric identifiers. + + var MAINVERSION = R++; + src[MAINVERSION] = + '(' + + src[NUMERICIDENTIFIER] + + ')\\.' + + '(' + + src[NUMERICIDENTIFIER] + + ')\\.' + + '(' + + src[NUMERICIDENTIFIER] + + ')'; + + var MAINVERSIONLOOSE = R++; + src[MAINVERSIONLOOSE] = + '(' + + src[NUMERICIDENTIFIERLOOSE] + + ')\\.' + + '(' + + src[NUMERICIDENTIFIERLOOSE] + + ')\\.' + + '(' + + src[NUMERICIDENTIFIERLOOSE] + + ')'; + + // ## Pre-release Version Identifier + // A numeric identifier, or a non-numeric identifier. + + var PRERELEASEIDENTIFIER = R++; + src[PRERELEASEIDENTIFIER] = '(?:' + src[NUMERICIDENTIFIER] + '|' + src[NONNUMERICIDENTIFIER] + ')'; + + var PRERELEASEIDENTIFIERLOOSE = R++; + src[PRERELEASEIDENTIFIERLOOSE] = + '(?:' + src[NUMERICIDENTIFIERLOOSE] + '|' + src[NONNUMERICIDENTIFIER] + ')'; + + // ## Pre-release Version + // Hyphen, followed by one or more dot-separated pre-release version + // identifiers. + + var PRERELEASE = R++; + src[PRERELEASE] = '(?:-(' + src[PRERELEASEIDENTIFIER] + '(?:\\.' + src[PRERELEASEIDENTIFIER] + ')*))'; + + var PRERELEASELOOSE = R++; + src[PRERELEASELOOSE] = + '(?:-?(' + src[PRERELEASEIDENTIFIERLOOSE] + '(?:\\.' + src[PRERELEASEIDENTIFIERLOOSE] + ')*))'; + + // ## Build Metadata Identifier + // Any combination of digits, letters, or hyphens. + + var BUILDIDENTIFIER = R++; + src[BUILDIDENTIFIER] = '[0-9A-Za-z-]+'; + + // ## Build Metadata + // Plus sign, followed by one or more period-separated build metadata + // identifiers. + + var BUILD = R++; + src[BUILD] = '(?:\\+(' + src[BUILDIDENTIFIER] + '(?:\\.' + src[BUILDIDENTIFIER] + ')*))'; + + // ## Full Version String + // A main version, followed optionally by a pre-release version and + // build metadata. + + // Note that the only major, minor, patch, and pre-release sections of + // the version string are capturing groups. The build metadata is not a + // capturing group, because it should not ever be used in version + // comparison. + + var FULL = R++; + var FULLPLAIN = 'v?' + src[MAINVERSION] + src[PRERELEASE] + '?' + src[BUILD] + '?'; + + src[FULL] = '^' + FULLPLAIN + '$'; + + // like full, but allows v1.2.3 and =1.2.3, which people do sometimes. + // also, 1.0.0alpha1 (prerelease without the hyphen) which is pretty + // common in the npm registry. + var LOOSEPLAIN = '[v=\\s]*' + src[MAINVERSIONLOOSE] + src[PRERELEASELOOSE] + '?' + src[BUILD] + '?'; + + var LOOSE = R++; + src[LOOSE] = '^' + LOOSEPLAIN + '$'; + + var GTLT = R++; + src[GTLT] = '((?:<|>)?=?)'; + + // Something like "2.*" or "1.2.x". + // Note that "x.x" is a valid xRange identifer, meaning "any version" + // Only the first item is strictly required. + var XRANGEIDENTIFIERLOOSE = R++; + src[XRANGEIDENTIFIERLOOSE] = src[NUMERICIDENTIFIERLOOSE] + '|x|X|\\*'; + var XRANGEIDENTIFIER = R++; + src[XRANGEIDENTIFIER] = src[NUMERICIDENTIFIER] + '|x|X|\\*'; + + var XRANGEPLAIN = R++; + src[XRANGEPLAIN] = + '[v=\\s]*(' + + src[XRANGEIDENTIFIER] + + ')' + + '(?:\\.(' + + src[XRANGEIDENTIFIER] + + ')' + + '(?:\\.(' + + src[XRANGEIDENTIFIER] + + ')' + + '(?:' + + src[PRERELEASE] + + ')?' + + src[BUILD] + + '?' + + ')?)?'; + + var XRANGEPLAINLOOSE = R++; + src[XRANGEPLAINLOOSE] = + '[v=\\s]*(' + + src[XRANGEIDENTIFIERLOOSE] + + ')' + + '(?:\\.(' + + src[XRANGEIDENTIFIERLOOSE] + + ')' + + '(?:\\.(' + + src[XRANGEIDENTIFIERLOOSE] + + ')' + + '(?:' + + src[PRERELEASELOOSE] + + ')?' + + src[BUILD] + + '?' + + ')?)?'; + + var XRANGE = R++; + src[XRANGE] = '^' + src[GTLT] + '\\s*' + src[XRANGEPLAIN] + '$'; + var XRANGELOOSE = R++; + src[XRANGELOOSE] = '^' + src[GTLT] + '\\s*' + src[XRANGEPLAINLOOSE] + '$'; + + // Coercion. + // Extract anything that could conceivably be a part of a valid semver + var COERCE = R++; + src[COERCE] = + '(?:^|[^\\d])' + + '(\\d{1,' + + MAX_SAFE_COMPONENT_LENGTH + + '})' + + '(?:\\.(\\d{1,' + + MAX_SAFE_COMPONENT_LENGTH + + '}))?' + + '(?:\\.(\\d{1,' + + MAX_SAFE_COMPONENT_LENGTH + + '}))?' + + '(?:$|[^\\d])'; + + // Tilde ranges. + // Meaning is "reasonably at or greater than" + var LONETILDE = R++; + src[LONETILDE] = '(?:~>?)'; + + var TILDETRIM = R++; + src[TILDETRIM] = '(\\s*)' + src[LONETILDE] + '\\s+'; + re[TILDETRIM] = new RegExp(src[TILDETRIM], 'g'); + var tildeTrimReplace = '$1~'; + + var TILDE = R++; + src[TILDE] = '^' + src[LONETILDE] + src[XRANGEPLAIN] + '$'; + var TILDELOOSE = R++; + src[TILDELOOSE] = '^' + src[LONETILDE] + src[XRANGEPLAINLOOSE] + '$'; + + // Caret ranges. + // Meaning is "at least and backwards compatible with" + var LONECARET = R++; + src[LONECARET] = '(?:\\^)'; + + var CARETTRIM = R++; + src[CARETTRIM] = '(\\s*)' + src[LONECARET] + '\\s+'; + re[CARETTRIM] = new RegExp(src[CARETTRIM], 'g'); + var caretTrimReplace = '$1^'; + + var CARET = R++; + src[CARET] = '^' + src[LONECARET] + src[XRANGEPLAIN] + '$'; + var CARETLOOSE = R++; + src[CARETLOOSE] = '^' + src[LONECARET] + src[XRANGEPLAINLOOSE] + '$'; + + // A simple gt/lt/eq thing, or just "" to indicate "any version" + var COMPARATORLOOSE = R++; + src[COMPARATORLOOSE] = '^' + src[GTLT] + '\\s*(' + LOOSEPLAIN + ')$|^$'; + var COMPARATOR = R++; + src[COMPARATOR] = '^' + src[GTLT] + '\\s*(' + FULLPLAIN + ')$|^$'; + + // An expression to strip any whitespace between the gtlt and the thing + // it modifies, so that `> 1.2.3` ==> `>1.2.3` + var COMPARATORTRIM = R++; + src[COMPARATORTRIM] = '(\\s*)' + src[GTLT] + '\\s*(' + LOOSEPLAIN + '|' + src[XRANGEPLAIN] + ')'; + + // this one has to use the /g flag + re[COMPARATORTRIM] = new RegExp(src[COMPARATORTRIM], 'g'); + var comparatorTrimReplace = '$1$2$3'; + + // Something like `1.2.3 - 1.2.4` + // Note that these all use the loose form, because they'll be + // checked against either the strict or loose comparator form + // later. + var HYPHENRANGE = R++; + src[HYPHENRANGE] = + '^\\s*(' + src[XRANGEPLAIN] + ')' + '\\s+-\\s+' + '(' + src[XRANGEPLAIN] + ')' + '\\s*$'; + + var HYPHENRANGELOOSE = R++; + src[HYPHENRANGELOOSE] = + '^\\s*(' + src[XRANGEPLAINLOOSE] + ')' + '\\s+-\\s+' + '(' + src[XRANGEPLAINLOOSE] + ')' + '\\s*$'; + + // Star ranges basically just allow anything at all. + var STAR = R++; + src[STAR] = '(<|>)?=?\\s*\\*'; + + // Compile to actual regexp objects. + // All are flag-free, unless they were created above with a flag. + for (var i = 0; i < R; i++) { + debug(i, src[i]); + if (!re[i]) re[i] = new RegExp(src[i]); + } + + exports.parse = parse; + function parse(version, loose) { + if (version instanceof SemVer) return version; + + if (typeof version !== 'string') return null; + + if (version.length > MAX_LENGTH) return null; + + var r = loose ? re[LOOSE] : re[FULL]; + if (!r.test(version)) return null; + + try { + return new SemVer(version, loose); + } catch (er) { + return null; + } + } + + exports.valid = valid; + function valid(version, loose) { + var v = parse(version, loose); + return v ? v.version : null; + } + + exports.clean = clean; + function clean(version, loose) { + var s = parse(version.trim().replace(/^[=v]+/, ''), loose); + return s ? s.version : null; + } + + exports.SemVer = SemVer; + + function SemVer(version, loose) { + if (version instanceof SemVer) { + if (version.loose === loose) return version; + else version = version.version; + } else if (typeof version !== 'string') { + throw new TypeError('Invalid Version: ' + version); + } + + if (version.length > MAX_LENGTH) + throw new TypeError('version is longer than ' + MAX_LENGTH + ' characters'); + + if (!(this instanceof SemVer)) return new SemVer(version, loose); + + debug('SemVer', version, loose); + this.loose = loose; + var m = version.trim().match(loose ? re[LOOSE] : re[FULL]); + + if (!m) throw new TypeError('Invalid Version: ' + version); + + this.raw = version; + + // these are actually numbers + this.major = +m[1]; + this.minor = +m[2]; + this.patch = +m[3]; + + if (this.major > MAX_SAFE_INTEGER || this.major < 0) throw new TypeError('Invalid major version'); + + if (this.minor > MAX_SAFE_INTEGER || this.minor < 0) throw new TypeError('Invalid minor version'); + + if (this.patch > MAX_SAFE_INTEGER || this.patch < 0) throw new TypeError('Invalid patch version'); + + // numberify any prerelease numeric ids + if (!m[4]) this.prerelease = []; + else + this.prerelease = m[4].split('.').map(function (id) { + if (/^[0-9]+$/.test(id)) { + var num = +id; + if (num >= 0 && num < MAX_SAFE_INTEGER) return num; + } + return id; + }); + + this.build = m[5] ? m[5].split('.') : []; + this.format(); + } + + SemVer.prototype.format = function () { + this.version = this.major + '.' + this.minor + '.' + this.patch; + if (this.prerelease.length) this.version += '-' + this.prerelease.join('.'); + return this.version; + }; + + SemVer.prototype.toString = function () { + return this.version; + }; + + SemVer.prototype.compare = function (other) { + debug('SemVer.compare', this.version, this.loose, other); + if (!(other instanceof SemVer)) other = new SemVer(other, this.loose); + + return this.compareMain(other) || this.comparePre(other); + }; + + SemVer.prototype.compareMain = function (other) { + if (!(other instanceof SemVer)) other = new SemVer(other, this.loose); + + return ( + compareIdentifiers(this.major, other.major) || + compareIdentifiers(this.minor, other.minor) || + compareIdentifiers(this.patch, other.patch) + ); + }; + + SemVer.prototype.comparePre = function (other) { + if (!(other instanceof SemVer)) other = new SemVer(other, this.loose); + + // NOT having a prerelease is > having one + if (this.prerelease.length && !other.prerelease.length) return -1; + else if (!this.prerelease.length && other.prerelease.length) return 1; + else if (!this.prerelease.length && !other.prerelease.length) return 0; + + var i = 0; + do { + var a = this.prerelease[i]; + var b = other.prerelease[i]; + debug('prerelease compare', i, a, b); + if (a === undefined && b === undefined) return 0; + else if (b === undefined) return 1; + else if (a === undefined) return -1; + else if (a === b) continue; + else return compareIdentifiers(a, b); + } while (++i); + }; + + // preminor will bump the version up to the next minor release, and immediately + // down to pre-release. premajor and prepatch work the same way. + SemVer.prototype.inc = function (release, identifier) { + switch (release) { + case 'premajor': + this.prerelease.length = 0; + this.patch = 0; + this.minor = 0; + this.major++; + this.inc('pre', identifier); + break; + case 'preminor': + this.prerelease.length = 0; + this.patch = 0; + this.minor++; + this.inc('pre', identifier); + break; + case 'prepatch': + // If this is already a prerelease, it will bump to the next version + // drop any prereleases that might already exist, since they are not + // relevant at this point. + this.prerelease.length = 0; + this.inc('patch', identifier); + this.inc('pre', identifier); + break; + // If the input is a non-prerelease version, this acts the same as + // prepatch. + case 'prerelease': + if (this.prerelease.length === 0) this.inc('patch', identifier); + this.inc('pre', identifier); + break; + + case 'major': + // If this is a pre-major version, bump up to the same major version. + // Otherwise increment major. + // 1.0.0-5 bumps to 1.0.0 + // 1.1.0 bumps to 2.0.0 + if (this.minor !== 0 || this.patch !== 0 || this.prerelease.length === 0) this.major++; + this.minor = 0; + this.patch = 0; + this.prerelease = []; + break; + case 'minor': + // If this is a pre-minor version, bump up to the same minor version. + // Otherwise increment minor. + // 1.2.0-5 bumps to 1.2.0 + // 1.2.1 bumps to 1.3.0 + if (this.patch !== 0 || this.prerelease.length === 0) this.minor++; + this.patch = 0; + this.prerelease = []; + break; + case 'patch': + // If this is not a pre-release version, it will increment the patch. + // If it is a pre-release it will bump up to the same patch version. + // 1.2.0-5 patches to 1.2.0 + // 1.2.0 patches to 1.2.1 + if (this.prerelease.length === 0) this.patch++; + this.prerelease = []; + break; + // This probably shouldn't be used publicly. + // 1.0.0 "pre" would become 1.0.0-0 which is the wrong direction. + case 'pre': + if (this.prerelease.length === 0) this.prerelease = [0]; + else { + var i = this.prerelease.length; + while (--i >= 0) { + if (typeof this.prerelease[i] === 'number') { + this.prerelease[i]++; + i = -2; + } + } + if (i === -1) + // didn't increment anything + this.prerelease.push(0); + } + if (identifier) { + // 1.2.0-beta.1 bumps to 1.2.0-beta.2, + // 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0 + if (this.prerelease[0] === identifier) { + if (isNaN(this.prerelease[1])) this.prerelease = [identifier, 0]; + } else this.prerelease = [identifier, 0]; + } + break; + + default: + throw new Error('invalid increment argument: ' + release); + } + this.format(); + this.raw = this.version; + return this; + }; + + exports.inc = inc; + function inc(version, release, loose, identifier) { + if (typeof loose === 'string') { + identifier = loose; + loose = undefined; + } + + try { + return new SemVer(version, loose).inc(release, identifier).version; + } catch (er) { + return null; + } + } + + exports.diff = diff; + function diff(version1, version2) { + if (eq(version1, version2)) { + return null; + } else { + var v1 = parse(version1); + var v2 = parse(version2); + if (v1.prerelease.length || v2.prerelease.length) { + for (var key in v1) { + if (key === 'major' || key === 'minor' || key === 'patch') { + if (v1[key] !== v2[key]) { + return 'pre' + key; + } + } + } + return 'prerelease'; + } + for (var key in v1) { + if (key === 'major' || key === 'minor' || key === 'patch') { + if (v1[key] !== v2[key]) { + return key; + } + } + } + } + } + + exports.compareIdentifiers = compareIdentifiers; + + var numeric = /^[0-9]+$/; + function compareIdentifiers(a, b) { + var anum = numeric.test(a); + var bnum = numeric.test(b); + + if (anum && bnum) { + a = +a; + b = +b; + } + + return anum && !bnum ? -1 : bnum && !anum ? 1 : a < b ? -1 : a > b ? 1 : 0; + } + + exports.rcompareIdentifiers = rcompareIdentifiers; + function rcompareIdentifiers(a, b) { + return compareIdentifiers(b, a); + } + + exports.major = major; + function major(a, loose) { + return new SemVer(a, loose).major; + } + + exports.minor = minor; + function minor(a, loose) { + return new SemVer(a, loose).minor; + } + + exports.patch = patch; + function patch(a, loose) { + return new SemVer(a, loose).patch; + } + + exports.compare = compare; + function compare(a, b, loose) { + return new SemVer(a, loose).compare(new SemVer(b, loose)); + } + + exports.compareLoose = compareLoose; + function compareLoose(a, b) { + return compare(a, b, true); + } + + exports.rcompare = rcompare; + function rcompare(a, b, loose) { + return compare(b, a, loose); + } + + exports.sort = sort; + function sort(list, loose) { + return list.sort(function (a, b) { + return exports.compare(a, b, loose); + }); + } + + exports.rsort = rsort; + function rsort(list, loose) { + return list.sort(function (a, b) { + return exports.rcompare(a, b, loose); + }); + } + + exports.gt = gt; + function gt(a, b, loose) { + return compare(a, b, loose) > 0; + } + + exports.lt = lt; + function lt(a, b, loose) { + return compare(a, b, loose) < 0; + } + + exports.eq = eq; + function eq(a, b, loose) { + return compare(a, b, loose) === 0; + } + + exports.neq = neq; + function neq(a, b, loose) { + return compare(a, b, loose) !== 0; + } + + exports.gte = gte; + function gte(a, b, loose) { + return compare(a, b, loose) >= 0; + } + + exports.lte = lte; + function lte(a, b, loose) { + return compare(a, b, loose) <= 0; + } + + exports.cmp = cmp; + function cmp(a, op, b, loose) { + var ret; + switch (op) { + case '===': + if (typeof a === 'object') a = a.version; + if (typeof b === 'object') b = b.version; + ret = a === b; + break; + case '!==': + if (typeof a === 'object') a = a.version; + if (typeof b === 'object') b = b.version; + ret = a !== b; + break; + case '': + case '=': + case '==': + ret = eq(a, b, loose); + break; + case '!=': + ret = neq(a, b, loose); + break; + case '>': + ret = gt(a, b, loose); + break; + case '>=': + ret = gte(a, b, loose); + break; + case '<': + ret = lt(a, b, loose); + break; + case '<=': + ret = lte(a, b, loose); + break; + default: + throw new TypeError('Invalid operator: ' + op); + } + return ret; + } + + exports.Comparator = Comparator; + function Comparator(comp, loose) { + if (comp instanceof Comparator) { + if (comp.loose === loose) return comp; + else comp = comp.value; + } + + if (!(this instanceof Comparator)) return new Comparator(comp, loose); + + debug('comparator', comp, loose); + this.loose = loose; + this.parse(comp); + + if (this.semver === ANY) this.value = ''; + else this.value = this.operator + this.semver.version; + + debug('comp', this); + } + + var ANY = {}; + Comparator.prototype.parse = function (comp) { + var r = this.loose ? re[COMPARATORLOOSE] : re[COMPARATOR]; + var m = comp.match(r); + + if (!m) throw new TypeError('Invalid comparator: ' + comp); + + this.operator = m[1]; + if (this.operator === '=') this.operator = ''; + + // if it literally is just '>' or '' then allow anything. + if (!m[2]) this.semver = ANY; + else this.semver = new SemVer(m[2], this.loose); + }; + + Comparator.prototype.toString = function () { + return this.value; + }; + + Comparator.prototype.test = function (version) { + debug('Comparator.test', version, this.loose); + + if (this.semver === ANY) return true; + + if (typeof version === 'string') version = new SemVer(version, this.loose); + + return cmp(version, this.operator, this.semver, this.loose); + }; + + Comparator.prototype.intersects = function (comp, loose) { + if (!(comp instanceof Comparator)) { + throw new TypeError('a Comparator is required'); + } + + var rangeTmp; + + if (this.operator === '') { + rangeTmp = new Range(comp.value, loose); + return satisfies(this.value, rangeTmp, loose); + } else if (comp.operator === '') { + rangeTmp = new Range(this.value, loose); + return satisfies(comp.semver, rangeTmp, loose); + } + + var sameDirectionIncreasing = + (this.operator === '>=' || this.operator === '>') && + (comp.operator === '>=' || comp.operator === '>'); + var sameDirectionDecreasing = + (this.operator === '<=' || this.operator === '<') && + (comp.operator === '<=' || comp.operator === '<'); + var sameSemVer = this.semver.version === comp.semver.version; + var differentDirectionsInclusive = + (this.operator === '>=' || this.operator === '<=') && + (comp.operator === '>=' || comp.operator === '<='); + var oppositeDirectionsLessThan = + cmp(this.semver, '<', comp.semver, loose) && + (this.operator === '>=' || this.operator === '>') && + (comp.operator === '<=' || comp.operator === '<'); + var oppositeDirectionsGreaterThan = + cmp(this.semver, '>', comp.semver, loose) && + (this.operator === '<=' || this.operator === '<') && + (comp.operator === '>=' || comp.operator === '>'); + + return ( + sameDirectionIncreasing || + sameDirectionDecreasing || + (sameSemVer && differentDirectionsInclusive) || + oppositeDirectionsLessThan || + oppositeDirectionsGreaterThan + ); + }; + + exports.Range = Range; + function Range(range, loose) { + if (range instanceof Range) { + if (range.loose === loose) { + return range; + } else { + return new Range(range.raw, loose); + } + } + + if (range instanceof Comparator) { + return new Range(range.value, loose); + } + + if (!(this instanceof Range)) return new Range(range, loose); + + this.loose = loose; + + // First, split based on boolean or || + this.raw = range; + this.set = range + .split(/\s*\|\|\s*/) + .map(function (range) { + return this.parseRange(range.trim()); + }, this) + .filter(function (c) { + // throw out any that are not relevant for whatever reason + return c.length; + }); + + if (!this.set.length) { + throw new TypeError('Invalid SemVer Range: ' + range); + } + + this.format(); + } + + Range.prototype.format = function () { + this.range = this.set + .map(function (comps) { + return comps.join(' ').trim(); + }) + .join('||') + .trim(); + return this.range; + }; + + Range.prototype.toString = function () { + return this.range; + }; + + Range.prototype.parseRange = function (range) { + var loose = this.loose; + range = range.trim(); + debug('range', range, loose); + // `1.2.3 - 1.2.4` => `>=1.2.3 <=1.2.4` + var hr = loose ? re[HYPHENRANGELOOSE] : re[HYPHENRANGE]; + range = range.replace(hr, hyphenReplace); + debug('hyphen replace', range); + // `> 1.2.3 < 1.2.5` => `>1.2.3 <1.2.5` + range = range.replace(re[COMPARATORTRIM], comparatorTrimReplace); + debug('comparator trim', range, re[COMPARATORTRIM]); + + // `~ 1.2.3` => `~1.2.3` + range = range.replace(re[TILDETRIM], tildeTrimReplace); + + // `^ 1.2.3` => `^1.2.3` + range = range.replace(re[CARETTRIM], caretTrimReplace); + + // normalize spaces + range = range.split(/\s+/).join(' '); + + // At this point, the range is completely trimmed and + // ready to be split into comparators. + + var compRe = loose ? re[COMPARATORLOOSE] : re[COMPARATOR]; + var set = range + .split(' ') + .map(function (comp) { + return parseComparator(comp, loose); + }) + .join(' ') + .split(/\s+/); + if (this.loose) { + // in loose mode, throw out any that are not valid comparators + set = set.filter(function (comp) { + return !!comp.match(compRe); + }); + } + set = set.map(function (comp) { + return new Comparator(comp, loose); + }); + + return set; + }; + + Range.prototype.intersects = function (range, loose) { + if (!(range instanceof Range)) { + throw new TypeError('a Range is required'); + } + + return this.set.some(function (thisComparators) { + return thisComparators.every(function (thisComparator) { + return range.set.some(function (rangeComparators) { + return rangeComparators.every(function (rangeComparator) { + return thisComparator.intersects(rangeComparator, loose); + }); + }); + }); + }); + }; + + // Mostly just for testing and legacy API reasons + exports.toComparators = toComparators; + function toComparators(range, loose) { + return new Range(range, loose).set.map(function (comp) { + return comp + .map(function (c) { + return c.value; + }) + .join(' ') + .trim() + .split(' '); + }); + } + + // comprised of xranges, tildes, stars, and gtlt's at this point. + // already replaced the hyphen ranges + // turn into a set of JUST comparators. + function parseComparator(comp, loose) { + debug('comp', comp); + comp = replaceCarets(comp, loose); + debug('caret', comp); + comp = replaceTildes(comp, loose); + debug('tildes', comp); + comp = replaceXRanges(comp, loose); + debug('xrange', comp); + comp = replaceStars(comp, loose); + debug('stars', comp); + return comp; + } + + function isX(id) { + return !id || id.toLowerCase() === 'x' || id === '*'; + } + + // ~, ~> --> * (any, kinda silly) + // ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0 <3.0.0 + // ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0 <2.1.0 + // ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0 <1.3.0 + // ~1.2.3, ~>1.2.3 --> >=1.2.3 <1.3.0 + // ~1.2.0, ~>1.2.0 --> >=1.2.0 <1.3.0 + function replaceTildes(comp, loose) { + return comp + .trim() + .split(/\s+/) + .map(function (comp) { + return replaceTilde(comp, loose); + }) + .join(' '); + } + + function replaceTilde(comp, loose) { + var r = loose ? re[TILDELOOSE] : re[TILDE]; + return comp.replace(r, function (_, M, m, p, pr) { + debug('tilde', comp, _, M, m, p, pr); + var ret; + + if (isX(M)) ret = ''; + else if (isX(m)) ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0'; + else if (isX(p)) + // ~1.2 == >=1.2.0 <1.3.0 + ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0'; + else if (pr) { + debug('replaceTilde pr', pr); + if (pr.charAt(0) !== '-') pr = '-' + pr; + ret = '>=' + M + '.' + m + '.' + p + pr + ' <' + M + '.' + (+m + 1) + '.0'; + } + // ~1.2.3 == >=1.2.3 <1.3.0 + else ret = '>=' + M + '.' + m + '.' + p + ' <' + M + '.' + (+m + 1) + '.0'; + + debug('tilde return', ret); + return ret; + }); + } + + // ^ --> * (any, kinda silly) + // ^2, ^2.x, ^2.x.x --> >=2.0.0 <3.0.0 + // ^2.0, ^2.0.x --> >=2.0.0 <3.0.0 + // ^1.2, ^1.2.x --> >=1.2.0 <2.0.0 + // ^1.2.3 --> >=1.2.3 <2.0.0 + // ^1.2.0 --> >=1.2.0 <2.0.0 + function replaceCarets(comp, loose) { + return comp + .trim() + .split(/\s+/) + .map(function (comp) { + return replaceCaret(comp, loose); + }) + .join(' '); + } + + function replaceCaret(comp, loose) { + debug('caret', comp, loose); + var r = loose ? re[CARETLOOSE] : re[CARET]; + return comp.replace(r, function (_, M, m, p, pr) { + debug('caret', comp, _, M, m, p, pr); + var ret; + + if (isX(M)) ret = ''; + else if (isX(m)) ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0'; + else if (isX(p)) { + if (M === '0') ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0'; + else ret = '>=' + M + '.' + m + '.0 <' + (+M + 1) + '.0.0'; + } else if (pr) { + debug('replaceCaret pr', pr); + if (pr.charAt(0) !== '-') pr = '-' + pr; + if (M === '0') { + if (m === '0') ret = '>=' + M + '.' + m + '.' + p + pr + ' <' + M + '.' + m + '.' + (+p + 1); + else ret = '>=' + M + '.' + m + '.' + p + pr + ' <' + M + '.' + (+m + 1) + '.0'; + } else ret = '>=' + M + '.' + m + '.' + p + pr + ' <' + (+M + 1) + '.0.0'; + } else { + debug('no pr'); + if (M === '0') { + if (m === '0') ret = '>=' + M + '.' + m + '.' + p + ' <' + M + '.' + m + '.' + (+p + 1); + else ret = '>=' + M + '.' + m + '.' + p + ' <' + M + '.' + (+m + 1) + '.0'; + } else ret = '>=' + M + '.' + m + '.' + p + ' <' + (+M + 1) + '.0.0'; + } + + debug('caret return', ret); + return ret; + }); + } + + function replaceXRanges(comp, loose) { + debug('replaceXRanges', comp, loose); + return comp + .split(/\s+/) + .map(function (comp) { + return replaceXRange(comp, loose); + }) + .join(' '); + } + + function replaceXRange(comp, loose) { + comp = comp.trim(); + var r = loose ? re[XRANGELOOSE] : re[XRANGE]; + return comp.replace(r, function (ret, gtlt, M, m, p, pr) { + debug('xRange', comp, ret, gtlt, M, m, p, pr); + var xM = isX(M); + var xm = xM || isX(m); + var xp = xm || isX(p); + var anyX = xp; + + if (gtlt === '=' && anyX) gtlt = ''; + + if (xM) { + if (gtlt === '>' || gtlt === '<') { + // nothing is allowed + ret = '<0.0.0'; + } else { + // nothing is forbidden + ret = '*'; + } + } else if (gtlt && anyX) { + // replace X with 0 + if (xm) m = 0; + if (xp) p = 0; + + if (gtlt === '>') { + // >1 => >=2.0.0 + // >1.2 => >=1.3.0 + // >1.2.3 => >= 1.2.4 + gtlt = '>='; + if (xm) { + M = +M + 1; + m = 0; + p = 0; + } else if (xp) { + m = +m + 1; + p = 0; + } + } else if (gtlt === '<=') { + // <=0.7.x is actually <0.8.0, since any 0.7.x should + // pass. Similarly, <=7.x is actually <8.0.0, etc. + gtlt = '<'; + if (xm) M = +M + 1; + else m = +m + 1; + } + + ret = gtlt + M + '.' + m + '.' + p; + } else if (xm) { + ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0'; + } else if (xp) { + ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0'; + } + + debug('xRange return', ret); + + return ret; + }); + } + + // Because * is AND-ed with everything else in the comparator, + // and '' means "any version", just remove the *s entirely. + function replaceStars(comp, loose) { + debug('replaceStars', comp, loose); + // Looseness is ignored here. star is always as loose as it gets! + return comp.trim().replace(re[STAR], ''); + } + + // This function is passed to string.replace(re[HYPHENRANGE]) + // M, m, patch, prerelease, build + // 1.2 - 3.4.5 => >=1.2.0 <=3.4.5 + // 1.2.3 - 3.4 => >=1.2.0 <3.5.0 Any 3.4.x will do + // 1.2 - 3.4 => >=1.2.0 <3.5.0 + function hyphenReplace($0, from, fM, fm, fp, fpr, fb, to, tM, tm, tp, tpr, tb) { + if (isX(fM)) from = ''; + else if (isX(fm)) from = '>=' + fM + '.0.0'; + else if (isX(fp)) from = '>=' + fM + '.' + fm + '.0'; + else from = '>=' + from; + + if (isX(tM)) to = ''; + else if (isX(tm)) to = '<' + (+tM + 1) + '.0.0'; + else if (isX(tp)) to = '<' + tM + '.' + (+tm + 1) + '.0'; + else if (tpr) to = '<=' + tM + '.' + tm + '.' + tp + '-' + tpr; + else to = '<=' + to; + + return (from + ' ' + to).trim(); + } + + // if ANY of the sets match ALL of its comparators, then pass + Range.prototype.test = function (version) { + if (!version) return false; + + if (typeof version === 'string') version = new SemVer(version, this.loose); + + for (var i = 0; i < this.set.length; i++) { + if (testSet(this.set[i], version)) return true; + } + return false; + }; + + function testSet(set, version) { + for (var i = 0; i < set.length; i++) { + if (!set[i].test(version)) return false; + } + + if (version.prerelease.length) { + // Find the set of versions that are allowed to have prereleases + // For example, ^1.2.3-pr.1 desugars to >=1.2.3-pr.1 <2.0.0 + // That should allow `1.2.3-pr.2` to pass. + // However, `1.2.4-alpha.notready` should NOT be allowed, + // even though it's within the range set by the comparators. + for (var i = 0; i < set.length; i++) { + debug(set[i].semver); + if (set[i].semver === ANY) continue; + + if (set[i].semver.prerelease.length > 0) { + var allowed = set[i].semver; + if ( + allowed.major === version.major && + allowed.minor === version.minor && + allowed.patch === version.patch + ) + return true; + } + } + + // Version has a -pre, but it's not one of the ones we like. + return false; + } + + return true; + } + + exports.satisfies = satisfies; + function satisfies(version, range, loose) { + try { + range = new Range(range, loose); + } catch (er) { + return false; + } + return range.test(version); + } + + exports.maxSatisfying = maxSatisfying; + function maxSatisfying(versions, range, loose) { + var max = null; + var maxSV = null; + try { + var rangeObj = new Range(range, loose); + } catch (er) { + return null; + } + versions.forEach(function (v) { + if (rangeObj.test(v)) { + // satisfies(v, range, loose) + if (!max || maxSV.compare(v) === -1) { + // compare(max, v, true) + max = v; + maxSV = new SemVer(max, loose); + } + } + }); + return max; + } + + exports.minSatisfying = minSatisfying; + function minSatisfying(versions, range, loose) { + var min = null; + var minSV = null; + try { + var rangeObj = new Range(range, loose); + } catch (er) { + return null; + } + versions.forEach(function (v) { + if (rangeObj.test(v)) { + // satisfies(v, range, loose) + if (!min || minSV.compare(v) === 1) { + // compare(min, v, true) + min = v; + minSV = new SemVer(min, loose); + } + } + }); + return min; + } + + exports.validRange = validRange; + function validRange(range, loose) { + try { + // Return '*' instead of '' so that truthiness works. + // This will throw if it's invalid anyway + return new Range(range, loose).range || '*'; + } catch (er) { + return null; + } + } + + // Determine if version is less than all the versions possible in the range + exports.ltr = ltr; + function ltr(version, range, loose) { + return outside(version, range, '<', loose); + } + + // Determine if version is greater than all the versions possible in the range. + exports.gtr = gtr; + function gtr(version, range, loose) { + return outside(version, range, '>', loose); + } + + exports.outside = outside; + function outside(version, range, hilo, loose) { + version = new SemVer(version, loose); + range = new Range(range, loose); + + var gtfn, ltefn, ltfn, comp, ecomp; + switch (hilo) { + case '>': + gtfn = gt; + ltefn = lte; + ltfn = lt; + comp = '>'; + ecomp = '>='; + break; + case '<': + gtfn = lt; + ltefn = gte; + ltfn = gt; + comp = '<'; + ecomp = '<='; + break; + default: + throw new TypeError('Must provide a hilo val of "<" or ">"'); + } + + // If it satisifes the range it is not outside + if (satisfies(version, range, loose)) { + return false; + } + + // From now on, variable terms are as if we're in "gtr" mode. + // but note that everything is flipped for the "ltr" function. + + for (var i = 0; i < range.set.length; ++i) { + var comparators = range.set[i]; + + var high = null; + var low = null; + + comparators.forEach(function (comparator) { + if (comparator.semver === ANY) { + comparator = new Comparator('>=0.0.0'); + } + high = high || comparator; + low = low || comparator; + if (gtfn(comparator.semver, high.semver, loose)) { + high = comparator; + } else if (ltfn(comparator.semver, low.semver, loose)) { + low = comparator; + } + }); + + // If the edge version comparator has a operator then our version + // isn't outside it + if (high.operator === comp || high.operator === ecomp) { + return false; + } + + // If the lowest version comparator has an operator and our version + // is less than it then it isn't higher than the range + if ((!low.operator || low.operator === comp) && ltefn(version, low.semver)) { + return false; + } else if (low.operator === ecomp && ltfn(version, low.semver)) { + return false; + } + } + return true; + } + + exports.prerelease = prerelease; + function prerelease(version, loose) { + var parsed = parse(version, loose); + return parsed && parsed.prerelease.length ? parsed.prerelease : null; + } + + exports.intersects = intersects; + function intersects(r1, r2, loose) { + r1 = new Range(r1, loose); + r2 = new Range(r2, loose); + return r1.intersects(r2); + } + + exports.coerce = coerce; + function coerce(version) { + if (version instanceof SemVer) return version; + + if (typeof version !== 'string') return null; + + var match = version.match(re[COERCE]); + + if (match == null) return null; + + return parse((match[1] || '0') + '.' + (match[2] || '0') + '.' + (match[3] || '0')); + } + + /***/ + }, + /* 23 */ + /***/ function (module, exports) { + module.exports = require('stream'); + + /***/ + }, + /* 24 */ + /***/ function (module, exports) { + module.exports = require('url'); + + /***/ + }, + /* 25 */ + /***/ function (module, __webpack_exports__, __webpack_require__) { + 'use strict'; + /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, 'a', function () { + return Subscription; + }); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_0__util_isArray__ = __webpack_require__(41); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__util_isObject__ = __webpack_require__(444); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__util_isFunction__ = __webpack_require__(154); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__util_tryCatch__ = __webpack_require__(57); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_4__util_errorObject__ = __webpack_require__(48); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_5__util_UnsubscriptionError__ = + __webpack_require__(441); + /** PURE_IMPORTS_START _util_isArray,_util_isObject,_util_isFunction,_util_tryCatch,_util_errorObject,_util_UnsubscriptionError PURE_IMPORTS_END */ + + var Subscription = /*@__PURE__*/ (function () { + function Subscription(unsubscribe) { + this.closed = false; + this._parent = null; + this._parents = null; + this._subscriptions = null; + if (unsubscribe) { + this._unsubscribe = unsubscribe; + } + } + Subscription.prototype.unsubscribe = function () { + var hasErrors = false; + var errors; + if (this.closed) { + return; + } + var _a = this, + _parent = _a._parent, + _parents = _a._parents, + _unsubscribe = _a._unsubscribe, + _subscriptions = _a._subscriptions; + this.closed = true; + this._parent = null; + this._parents = null; + this._subscriptions = null; + var index = -1; + var len = _parents ? _parents.length : 0; + while (_parent) { + _parent.remove(this); + _parent = (++index < len && _parents[index]) || null; + } + if ( + __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_2__util_isFunction__['a' /* isFunction */])( + _unsubscribe + ) + ) { + var trial = __webpack_require__ + .i(__WEBPACK_IMPORTED_MODULE_3__util_tryCatch__['a' /* tryCatch */])(_unsubscribe) + .call(this); + if (trial === __WEBPACK_IMPORTED_MODULE_4__util_errorObject__['a' /* errorObject */]) { + hasErrors = true; + errors = + errors || + (__WEBPACK_IMPORTED_MODULE_4__util_errorObject__['a' /* errorObject */].e instanceof + __WEBPACK_IMPORTED_MODULE_5__util_UnsubscriptionError__['a' /* UnsubscriptionError */] + ? flattenUnsubscriptionErrors( + __WEBPACK_IMPORTED_MODULE_4__util_errorObject__['a' /* errorObject */].e.errors + ) + : [__WEBPACK_IMPORTED_MODULE_4__util_errorObject__['a' /* errorObject */].e]); + } + } + if ( + __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_0__util_isArray__['a' /* isArray */])( + _subscriptions + ) + ) { + index = -1; + len = _subscriptions.length; + while (++index < len) { + var sub = _subscriptions[index]; + if ( + __webpack_require__.i(__WEBPACK_IMPORTED_MODULE_1__util_isObject__['a' /* isObject */])(sub) + ) { + var trial = __webpack_require__ + .i(__WEBPACK_IMPORTED_MODULE_3__util_tryCatch__['a' /* tryCatch */])(sub.unsubscribe) + .call(sub); + if (trial === __WEBPACK_IMPORTED_MODULE_4__util_errorObject__['a' /* errorObject */]) { + hasErrors = true; + errors = errors || []; + var err = __WEBPACK_IMPORTED_MODULE_4__util_errorObject__['a' /* errorObject */].e; + if ( + err instanceof + __WEBPACK_IMPORTED_MODULE_5__util_UnsubscriptionError__['a' /* UnsubscriptionError */] + ) { + errors = errors.concat(flattenUnsubscriptionErrors(err.errors)); + } else { + errors.push(err); + } + } + } + } + } + if (hasErrors) { + throw new __WEBPACK_IMPORTED_MODULE_5__util_UnsubscriptionError__['a' /* UnsubscriptionError */]( + errors + ); + } + }; + Subscription.prototype.add = function (teardown) { + if (!teardown || teardown === Subscription.EMPTY) { + return Subscription.EMPTY; + } + if (teardown === this) { + return this; + } + var subscription = teardown; + switch (typeof teardown) { + case 'function': + subscription = new Subscription(teardown); + case 'object': + if (subscription.closed || typeof subscription.unsubscribe !== 'function') { + return subscription; + } else if (this.closed) { + subscription.unsubscribe(); + return subscription; + } else if (typeof subscription._addParent !== 'function') { + var tmp = subscription; + subscription = new Subscription(); + subscription._subscriptions = [tmp]; + } + break; + default: + throw new Error('unrecognized teardown ' + teardown + ' added to Subscription.'); + } + var subscriptions = this._subscriptions || (this._subscriptions = []); + subscriptions.push(subscription); + subscription._addParent(this); + return subscription; + }; + Subscription.prototype.remove = function (subscription) { + var subscriptions = this._subscriptions; + if (subscriptions) { + var subscriptionIndex = subscriptions.indexOf(subscription); + if (subscriptionIndex !== -1) { + subscriptions.splice(subscriptionIndex, 1); + } + } + }; + Subscription.prototype._addParent = function (parent) { + var _a = this, + _parent = _a._parent, + _parents = _a._parents; + if (!_parent || _parent === parent) { + this._parent = parent; + } else if (!_parents) { + this._parents = [parent]; + } else if (_parents.indexOf(parent) === -1) { + _parents.push(parent); + } + }; + Subscription.EMPTY = (function (empty) { + empty.closed = true; + return empty; + })(new Subscription()); + return Subscription; + })(); + + function flattenUnsubscriptionErrors(errors) { + return errors.reduce(function (errs, err) { + return errs.concat( + err instanceof + __WEBPACK_IMPORTED_MODULE_5__util_UnsubscriptionError__['a' /* UnsubscriptionError */] + ? err.errors + : err + ); + }, []); + } + //# sourceMappingURL=Subscription.js.map + + /***/ + }, + /* 26 */ + /***/ function (module, exports, __webpack_require__) { + // Copyright 2015 Joyent, Inc. + + module.exports = { + bufferSplit: bufferSplit, + addRSAMissing: addRSAMissing, + calculateDSAPublic: calculateDSAPublic, + calculateED25519Public: calculateED25519Public, + calculateX25519Public: calculateX25519Public, + mpNormalize: mpNormalize, + mpDenormalize: mpDenormalize, + ecNormalize: ecNormalize, + countZeros: countZeros, + assertCompatible: assertCompatible, + isCompatible: isCompatible, + opensslKeyDeriv: opensslKeyDeriv, + opensshCipherInfo: opensshCipherInfo, + publicFromPrivateECDSA: publicFromPrivateECDSA, + zeroPadToLength: zeroPadToLength, + writeBitString: writeBitString, + readBitString: readBitString, + }; + + var assert = __webpack_require__(16); + var Buffer = __webpack_require__(15).Buffer; + var PrivateKey = __webpack_require__(33); + var Key = __webpack_require__(27); + var crypto = __webpack_require__(11); + var algs = __webpack_require__(32); + var asn1 = __webpack_require__(66); + + var ec, jsbn; + var nacl; + + var MAX_CLASS_DEPTH = 3; + + function isCompatible(obj, klass, needVer) { + if (obj === null || typeof obj !== 'object') return false; + if (needVer === undefined) needVer = klass.prototype._sshpkApiVersion; + if (obj instanceof klass && klass.prototype._sshpkApiVersion[0] == needVer[0]) return true; + var proto = Object.getPrototypeOf(obj); + var depth = 0; + while (proto.constructor.name !== klass.name) { + proto = Object.getPrototypeOf(proto); + if (!proto || ++depth > MAX_CLASS_DEPTH) return false; + } + if (proto.constructor.name !== klass.name) return false; + var ver = proto._sshpkApiVersion; + if (ver === undefined) ver = klass._oldVersionDetect(obj); + if (ver[0] != needVer[0] || ver[1] < needVer[1]) return false; + return true; + } + + function assertCompatible(obj, klass, needVer, name) { + if (name === undefined) name = 'object'; + assert.ok(obj, name + ' must not be null'); + assert.object(obj, name + ' must be an object'); + if (needVer === undefined) needVer = klass.prototype._sshpkApiVersion; + if (obj instanceof klass && klass.prototype._sshpkApiVersion[0] == needVer[0]) return; + var proto = Object.getPrototypeOf(obj); + var depth = 0; + while (proto.constructor.name !== klass.name) { + proto = Object.getPrototypeOf(proto); + assert.ok(proto && ++depth <= MAX_CLASS_DEPTH, name + ' must be a ' + klass.name + ' instance'); + } + assert.strictEqual( + proto.constructor.name, + klass.name, + name + ' must be a ' + klass.name + ' instance' + ); + var ver = proto._sshpkApiVersion; + if (ver === undefined) ver = klass._oldVersionDetect(obj); + assert.ok( + ver[0] == needVer[0] && ver[1] >= needVer[1], + name + + ' must be compatible with ' + + klass.name + + ' klass ' + + 'version ' + + needVer[0] + + '.' + + needVer[1] + ); + } + + var CIPHER_LEN = { + 'des-ede3-cbc': { key: 7, iv: 8 }, + 'aes-128-cbc': { key: 16, iv: 16 }, + }; + var PKCS5_SALT_LEN = 8; + + function opensslKeyDeriv(cipher, salt, passphrase, count) { + assert.buffer(salt, 'salt'); + assert.buffer(passphrase, 'passphrase'); + assert.number(count, 'iteration count'); + + var clen = CIPHER_LEN[cipher]; + assert.object(clen, 'supported cipher'); + + salt = salt.slice(0, PKCS5_SALT_LEN); + + var D, D_prev, bufs; + var material = Buffer.alloc(0); + while (material.length < clen.key + clen.iv) { + bufs = []; + if (D_prev) bufs.push(D_prev); + bufs.push(passphrase); + bufs.push(salt); + D = Buffer.concat(bufs); + for (var j = 0; j < count; ++j) D = crypto.createHash('md5').update(D).digest(); + material = Buffer.concat([material, D]); + D_prev = D; + } + + return { + key: material.slice(0, clen.key), + iv: material.slice(clen.key, clen.key + clen.iv), + }; + } + + /* Count leading zero bits on a buffer */ + function countZeros(buf) { + var o = 0, + obit = 8; + while (o < buf.length) { + var mask = 1 << obit; + if ((buf[o] & mask) === mask) break; + obit--; + if (obit < 0) { + o++; + obit = 8; + } + } + return o * 8 + (8 - obit) - 1; + } + + function bufferSplit(buf, chr) { + assert.buffer(buf); + assert.string(chr); + + var parts = []; + var lastPart = 0; + var matches = 0; + for (var i = 0; i < buf.length; ++i) { + if (buf[i] === chr.charCodeAt(matches)) ++matches; + else if (buf[i] === chr.charCodeAt(0)) matches = 1; + else matches = 0; + + if (matches >= chr.length) { + var newPart = i + 1; + parts.push(buf.slice(lastPart, newPart - matches)); + lastPart = newPart; + matches = 0; + } + } + if (lastPart <= buf.length) parts.push(buf.slice(lastPart, buf.length)); + + return parts; + } + + function ecNormalize(buf, addZero) { + assert.buffer(buf); + if (buf[0] === 0x00 && buf[1] === 0x04) { + if (addZero) return buf; + return buf.slice(1); + } else if (buf[0] === 0x04) { + if (!addZero) return buf; + } else { + while (buf[0] === 0x00) buf = buf.slice(1); + if (buf[0] === 0x02 || buf[0] === 0x03) + throw new Error('Compressed elliptic curve points ' + 'are not supported'); + if (buf[0] !== 0x04) throw new Error('Not a valid elliptic curve point'); + if (!addZero) return buf; + } + var b = Buffer.alloc(buf.length + 1); + b[0] = 0x0; + buf.copy(b, 1); + return b; + } + + function readBitString(der, tag) { + if (tag === undefined) tag = asn1.Ber.BitString; + var buf = der.readString(tag, true); + assert.strictEqual( + buf[0], + 0x00, + 'bit strings with unused bits are ' + 'not supported (0x' + buf[0].toString(16) + ')' + ); + return buf.slice(1); + } + + function writeBitString(der, buf, tag) { + if (tag === undefined) tag = asn1.Ber.BitString; + var b = Buffer.alloc(buf.length + 1); + b[0] = 0x00; + buf.copy(b, 1); + der.writeBuffer(b, tag); + } + + function mpNormalize(buf) { + assert.buffer(buf); + while (buf.length > 1 && buf[0] === 0x00 && (buf[1] & 0x80) === 0x00) buf = buf.slice(1); + if ((buf[0] & 0x80) === 0x80) { + var b = Buffer.alloc(buf.length + 1); + b[0] = 0x00; + buf.copy(b, 1); + buf = b; + } + return buf; + } + + function mpDenormalize(buf) { + assert.buffer(buf); + while (buf.length > 1 && buf[0] === 0x00) buf = buf.slice(1); + return buf; + } + + function zeroPadToLength(buf, len) { + assert.buffer(buf); + assert.number(len); + while (buf.length > len) { + assert.equal(buf[0], 0x00); + buf = buf.slice(1); + } + while (buf.length < len) { + var b = Buffer.alloc(buf.length + 1); + b[0] = 0x00; + buf.copy(b, 1); + buf = b; + } + return buf; + } + + function bigintToMpBuf(bigint) { + var buf = Buffer.from(bigint.toByteArray()); + buf = mpNormalize(buf); + return buf; + } + + function calculateDSAPublic(g, p, x) { + assert.buffer(g); + assert.buffer(p); + assert.buffer(x); + try { + var bigInt = __webpack_require__(81).BigInteger; + } catch (e) { + throw new Error('To load a PKCS#8 format DSA private key, ' + 'the node jsbn library is required.'); + } + g = new bigInt(g); + p = new bigInt(p); + x = new bigInt(x); + var y = g.modPow(x, p); + var ybuf = bigintToMpBuf(y); + return ybuf; + } + + function calculateED25519Public(k) { + assert.buffer(k); + + if (nacl === undefined) nacl = __webpack_require__(76); + + var kp = nacl.sign.keyPair.fromSeed(new Uint8Array(k)); + return Buffer.from(kp.publicKey); + } + + function calculateX25519Public(k) { + assert.buffer(k); + + if (nacl === undefined) nacl = __webpack_require__(76); + + var kp = nacl.box.keyPair.fromSeed(new Uint8Array(k)); + return Buffer.from(kp.publicKey); + } + + function addRSAMissing(key) { + assert.object(key); + assertCompatible(key, PrivateKey, [1, 1]); + try { + var bigInt = __webpack_require__(81).BigInteger; + } catch (e) { + throw new Error('To write a PEM private key from ' + 'this source, the node jsbn lib is required.'); + } + + var d = new bigInt(key.part.d.data); + var buf; + + if (!key.part.dmodp) { + var p = new bigInt(key.part.p.data); + var dmodp = d.mod(p.subtract(1)); + + buf = bigintToMpBuf(dmodp); + key.part.dmodp = { name: 'dmodp', data: buf }; + key.parts.push(key.part.dmodp); + } + if (!key.part.dmodq) { + var q = new bigInt(key.part.q.data); + var dmodq = d.mod(q.subtract(1)); + + buf = bigintToMpBuf(dmodq); + key.part.dmodq = { name: 'dmodq', data: buf }; + key.parts.push(key.part.dmodq); + } + } + + function publicFromPrivateECDSA(curveName, priv) { + assert.string(curveName, 'curveName'); + assert.buffer(priv); + if (ec === undefined) ec = __webpack_require__(139); + if (jsbn === undefined) jsbn = __webpack_require__(81).BigInteger; + var params = algs.curves[curveName]; + var p = new jsbn(params.p); + var a = new jsbn(params.a); + var b = new jsbn(params.b); + var curve = new ec.ECCurveFp(p, a, b); + var G = curve.decodePointHex(params.G.toString('hex')); + + var d = new jsbn(mpNormalize(priv)); + var pub = G.multiply(d); + pub = Buffer.from(curve.encodePointHex(pub), 'hex'); + + var parts = []; + parts.push({ name: 'curve', data: Buffer.from(curveName) }); + parts.push({ name: 'Q', data: pub }); + + var key = new Key({ type: 'ecdsa', curve: curve, parts: parts }); + return key; + } + + function opensshCipherInfo(cipher) { + var inf = {}; + switch (cipher) { + case '3des-cbc': + inf.keySize = 24; + inf.blockSize = 8; + inf.opensslName = 'des-ede3-cbc'; + break; + case 'blowfish-cbc': + inf.keySize = 16; + inf.blockSize = 8; + inf.opensslName = 'bf-cbc'; + break; + case 'aes128-cbc': + case 'aes128-ctr': + case 'aes128-gcm@openssh.com': + inf.keySize = 16; + inf.blockSize = 16; + inf.opensslName = 'aes-128-' + cipher.slice(7, 10); + break; + case 'aes192-cbc': + case 'aes192-ctr': + case 'aes192-gcm@openssh.com': + inf.keySize = 24; + inf.blockSize = 16; + inf.opensslName = 'aes-192-' + cipher.slice(7, 10); + break; + case 'aes256-cbc': + case 'aes256-ctr': + case 'aes256-gcm@openssh.com': + inf.keySize = 32; + inf.blockSize = 16; + inf.opensslName = 'aes-256-' + cipher.slice(7, 10); + break; + default: + throw new Error('Unsupported openssl cipher "' + cipher + '"'); + } + return inf; + } + + /***/ + }, + /* 27 */ + /***/ function (module, exports, __webpack_require__) { + // Copyright 2017 Joyent, Inc. + + module.exports = Key; + + var assert = __webpack_require__(16); + var algs = __webpack_require__(32); + var crypto = __webpack_require__(11); + var Fingerprint = __webpack_require__(156); + var Signature = __webpack_require__(75); + var DiffieHellman = __webpack_require__(325).DiffieHellman; + var errs = __webpack_require__(74); + var utils = __webpack_require__(26); + var PrivateKey = __webpack_require__(33); + var edCompat; + + try { + edCompat = __webpack_require__(454); + } catch (e) { + /* Just continue through, and bail out if we try to use it. */ + } + + var InvalidAlgorithmError = errs.InvalidAlgorithmError; + var KeyParseError = errs.KeyParseError; + + var formats = {}; + formats['auto'] = __webpack_require__(455); + formats['pem'] = __webpack_require__(86); + formats['pkcs1'] = __webpack_require__(327); + formats['pkcs8'] = __webpack_require__(157); + formats['rfc4253'] = __webpack_require__(103); + formats['ssh'] = __webpack_require__(456); + formats['ssh-private'] = __webpack_require__(193); + formats['openssh'] = formats['ssh-private']; + formats['dnssec'] = __webpack_require__(326); + + function Key(opts) { + assert.object(opts, 'options'); + assert.arrayOfObject(opts.parts, 'options.parts'); + assert.string(opts.type, 'options.type'); + assert.optionalString(opts.comment, 'options.comment'); + + var algInfo = algs.info[opts.type]; + if (typeof algInfo !== 'object') throw new InvalidAlgorithmError(opts.type); + + var partLookup = {}; + for (var i = 0; i < opts.parts.length; ++i) { + var part = opts.parts[i]; + partLookup[part.name] = part; + } + + this.type = opts.type; + this.parts = opts.parts; + this.part = partLookup; + this.comment = undefined; + this.source = opts.source; + + /* for speeding up hashing/fingerprint operations */ + this._rfc4253Cache = opts._rfc4253Cache; + this._hashCache = {}; + + var sz; + this.curve = undefined; + if (this.type === 'ecdsa') { + var curve = this.part.curve.data.toString(); + this.curve = curve; + sz = algs.curves[curve].size; + } else if (this.type === 'ed25519' || this.type === 'curve25519') { + sz = 256; + this.curve = 'curve25519'; + } else { + var szPart = this.part[algInfo.sizePart]; + sz = szPart.data.length; + sz = sz * 8 - utils.countZeros(szPart.data); + } + this.size = sz; + } + + Key.formats = formats; + + Key.prototype.toBuffer = function (format, options) { + if (format === undefined) format = 'ssh'; + assert.string(format, 'format'); + assert.object(formats[format], 'formats[format]'); + assert.optionalObject(options, 'options'); + + if (format === 'rfc4253') { + if (this._rfc4253Cache === undefined) this._rfc4253Cache = formats['rfc4253'].write(this); + return this._rfc4253Cache; + } + + return formats[format].write(this, options); + }; + + Key.prototype.toString = function (format, options) { + return this.toBuffer(format, options).toString(); + }; + + Key.prototype.hash = function (algo) { + assert.string(algo, 'algorithm'); + algo = algo.toLowerCase(); + if (algs.hashAlgs[algo] === undefined) throw new InvalidAlgorithmError(algo); + + if (this._hashCache[algo]) return this._hashCache[algo]; + var hash = crypto.createHash(algo).update(this.toBuffer('rfc4253')).digest(); + this._hashCache[algo] = hash; + return hash; + }; + + Key.prototype.fingerprint = function (algo) { + if (algo === undefined) algo = 'sha256'; + assert.string(algo, 'algorithm'); + var opts = { + type: 'key', + hash: this.hash(algo), + algorithm: algo, + }; + return new Fingerprint(opts); + }; + + Key.prototype.defaultHashAlgorithm = function () { + var hashAlgo = 'sha1'; + if (this.type === 'rsa') hashAlgo = 'sha256'; + if (this.type === 'dsa' && this.size > 1024) hashAlgo = 'sha256'; + if (this.type === 'ed25519') hashAlgo = 'sha512'; + if (this.type === 'ecdsa') { + if (this.size <= 256) hashAlgo = 'sha256'; + else if (this.size <= 384) hashAlgo = 'sha384'; + else hashAlgo = 'sha512'; + } + return hashAlgo; + }; + + Key.prototype.createVerify = function (hashAlgo) { + if (hashAlgo === undefined) hashAlgo = this.defaultHashAlgorithm(); + assert.string(hashAlgo, 'hash algorithm'); + + /* ED25519 is not supported by OpenSSL, use a javascript impl. */ + if (this.type === 'ed25519' && edCompat !== undefined) return new edCompat.Verifier(this, hashAlgo); + if (this.type === 'curve25519') + throw new Error('Curve25519 keys are not suitable for ' + 'signing or verification'); + + var v, nm, err; + try { + nm = hashAlgo.toUpperCase(); + v = crypto.createVerify(nm); + } catch (e) { + err = e; + } + if (v === undefined || (err instanceof Error && err.message.match(/Unknown message digest/))) { + nm = 'RSA-'; + nm += hashAlgo.toUpperCase(); + v = crypto.createVerify(nm); + } + assert.ok(v, 'failed to create verifier'); + var oldVerify = v.verify.bind(v); + var key = this.toBuffer('pkcs8'); + var curve = this.curve; + var self = this; + v.verify = function (signature, fmt) { + if (Signature.isSignature(signature, [2, 0])) { + if (signature.type !== self.type) return false; + if (signature.hashAlgorithm && signature.hashAlgorithm !== hashAlgo) return false; + if (signature.curve && self.type === 'ecdsa' && signature.curve !== curve) return false; + return oldVerify(key, signature.toBuffer('asn1')); + } else if (typeof signature === 'string' || Buffer.isBuffer(signature)) { + return oldVerify(key, signature, fmt); + + /* + * Avoid doing this on valid arguments, walking the prototype + * chain can be quite slow. + */ + } else if (Signature.isSignature(signature, [1, 0])) { + throw new Error( + 'signature was created by too old ' + 'a version of sshpk and cannot be verified' + ); + } else { + throw new TypeError('signature must be a string, ' + 'Buffer, or Signature object'); + } + }; + return v; + }; + + Key.prototype.createDiffieHellman = function () { + if (this.type === 'rsa') throw new Error('RSA keys do not support Diffie-Hellman'); + + return new DiffieHellman(this); + }; + Key.prototype.createDH = Key.prototype.createDiffieHellman; + + Key.parse = function (data, format, options) { + if (typeof data !== 'string') assert.buffer(data, 'data'); + if (format === undefined) format = 'auto'; + assert.string(format, 'format'); + if (typeof options === 'string') options = { filename: options }; + assert.optionalObject(options, 'options'); + if (options === undefined) options = {}; + assert.optionalString(options.filename, 'options.filename'); + if (options.filename === undefined) options.filename = '(unnamed)'; + + assert.object(formats[format], 'formats[format]'); + + try { + var k = formats[format].read(data, options); + if (k instanceof PrivateKey) k = k.toPublic(); + if (!k.comment) k.comment = options.filename; + return k; + } catch (e) { + if (e.name === 'KeyEncryptedError') throw e; + throw new KeyParseError(options.filename, format, e); + } + }; + + Key.isKey = function (obj, ver) { + return utils.isCompatible(obj, Key, ver); + }; + + /* + * API versions for Key: + * [1,0] -- initial ver, may take Signature for createVerify or may not + * [1,1] -- added pkcs1, pkcs8 formats + * [1,2] -- added auto, ssh-private, openssh formats + * [1,3] -- added defaultHashAlgorithm + * [1,4] -- added ed support, createDH + * [1,5] -- first explicitly tagged version + * [1,6] -- changed ed25519 part names + */ + Key.prototype._sshpkApiVersion = [1, 6]; + + Key._oldVersionDetect = function (obj) { + assert.func(obj.toBuffer); + assert.func(obj.fingerprint); + if (obj.createDH) return [1, 4]; + if (obj.defaultHashAlgorithm) return [1, 3]; + if (obj.formats['auto']) return [1, 2]; + if (obj.formats['pkcs1']) return [1, 1]; + return [1, 0]; + }; + + /***/ + }, + /* 28 */ + /***/ function (module, exports) { + module.exports = require('assert'); + + /***/ + }, + /* 29 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + Object.defineProperty(exports, '__esModule', { + value: true, + }); + exports.default = nullify; + function nullify(obj = {}) { + if (Array.isArray(obj)) { + for ( + var _iterator = obj, + _isArray = Array.isArray(_iterator), + _i = 0, + _iterator = _isArray ? _iterator : _iterator[Symbol.iterator](); + ; + + ) { + var _ref; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref = _i.value; + } + + const item = _ref; + + nullify(item); + } + } else if ((obj !== null && typeof obj === 'object') || typeof obj === 'function') { + Object.setPrototypeOf(obj, null); + + // for..in can only be applied to 'object', not 'function' + if (typeof obj === 'object') { + for (const key in obj) { + nullify(obj[key]); + } + } + } + + return obj; + } + + /***/ + }, + /* 30 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + const escapeStringRegexp = __webpack_require__(382); + const ansiStyles = __webpack_require__(474); + const stdoutColor = __webpack_require__(566).stdout; + + const template = __webpack_require__(567); + + const isSimpleWindowsTerm = + process.platform === 'win32' && !(process.env.TERM || '').toLowerCase().startsWith('xterm'); + + // `supportsColor.level` → `ansiStyles.color[name]` mapping + const levelMapping = ['ansi', 'ansi', 'ansi256', 'ansi16m']; + + // `color-convert` models to exclude from the Chalk API due to conflicts and such + const skipModels = new Set(['gray']); + + const styles = Object.create(null); + + function applyOptions(obj, options) { + options = options || {}; + + // Detect level if not set manually + const scLevel = stdoutColor ? stdoutColor.level : 0; + obj.level = options.level === undefined ? scLevel : options.level; + obj.enabled = 'enabled' in options ? options.enabled : obj.level > 0; + } + + function Chalk(options) { + // We check for this.template here since calling `chalk.constructor()` + // by itself will have a `this` of a previously constructed chalk object + if (!this || !(this instanceof Chalk) || this.template) { + const chalk = {}; + applyOptions(chalk, options); + + chalk.template = function () { + const args = [].slice.call(arguments); + return chalkTag.apply(null, [chalk.template].concat(args)); + }; + + Object.setPrototypeOf(chalk, Chalk.prototype); + Object.setPrototypeOf(chalk.template, chalk); + + chalk.template.constructor = Chalk; + + return chalk.template; + } + + applyOptions(this, options); + } + + // Use bright blue on Windows as the normal blue color is illegible + if (isSimpleWindowsTerm) { + ansiStyles.blue.open = '\u001B[94m'; + } + + for (const key of Object.keys(ansiStyles)) { + ansiStyles[key].closeRe = new RegExp(escapeStringRegexp(ansiStyles[key].close), 'g'); + + styles[key] = { + get() { + const codes = ansiStyles[key]; + return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, key); + }, + }; + } + + styles.visible = { + get() { + return build.call(this, this._styles || [], true, 'visible'); + }, + }; + + ansiStyles.color.closeRe = new RegExp(escapeStringRegexp(ansiStyles.color.close), 'g'); + for (const model of Object.keys(ansiStyles.color.ansi)) { + if (skipModels.has(model)) { + continue; + } + + styles[model] = { + get() { + const level = this.level; + return function () { + const open = ansiStyles.color[levelMapping[level]][model].apply(null, arguments); + const codes = { + open, + close: ansiStyles.color.close, + closeRe: ansiStyles.color.closeRe, + }; + return build.call( + this, + this._styles ? this._styles.concat(codes) : [codes], + this._empty, + model + ); + }; + }, + }; + } + + ansiStyles.bgColor.closeRe = new RegExp(escapeStringRegexp(ansiStyles.bgColor.close), 'g'); + for (const model of Object.keys(ansiStyles.bgColor.ansi)) { + if (skipModels.has(model)) { + continue; + } + + const bgModel = 'bg' + model[0].toUpperCase() + model.slice(1); + styles[bgModel] = { + get() { + const level = this.level; + return function () { + const open = ansiStyles.bgColor[levelMapping[level]][model].apply(null, arguments); + const codes = { + open, + close: ansiStyles.bgColor.close, + closeRe: ansiStyles.bgColor.closeRe, + }; + return build.call( + this, + this._styles ? this._styles.concat(codes) : [codes], + this._empty, + model + ); + }; + }, + }; + } + + const proto = Object.defineProperties(() => {}, styles); + + function build(_styles, _empty, key) { + const builder = function () { + return applyStyle.apply(builder, arguments); + }; + + builder._styles = _styles; + builder._empty = _empty; + + const self = this; + + Object.defineProperty(builder, 'level', { + enumerable: true, + get() { + return self.level; + }, + set(level) { + self.level = level; + }, + }); + + Object.defineProperty(builder, 'enabled', { + enumerable: true, + get() { + return self.enabled; + }, + set(enabled) { + self.enabled = enabled; + }, + }); + + // See below for fix regarding invisible grey/dim combination on Windows + builder.hasGrey = this.hasGrey || key === 'gray' || key === 'grey'; + + // `__proto__` is used because we must return a function, but there is + // no way to create a function with a different prototype + builder.__proto__ = proto; // eslint-disable-line no-proto + + return builder; + } + + function applyStyle() { + // Support varags, but simply cast to string in case there's only one arg + const args = arguments; + const argsLen = args.length; + let str = String(arguments[0]); + + if (argsLen === 0) { + return ''; + } + + if (argsLen > 1) { + // Don't slice `arguments`, it prevents V8 optimizations + for (let a = 1; a < argsLen; a++) { + str += ' ' + args[a]; + } + } + + if (!this.enabled || this.level <= 0 || !str) { + return this._empty ? '' : str; + } + + // Turns out that on Windows dimmed gray text becomes invisible in cmd.exe, + // see https://github.com/chalk/chalk/issues/58 + // If we're on Windows and we're dealing with a gray color, temporarily make 'dim' a noop. + const originalDim = ansiStyles.dim.open; + if (isSimpleWindowsTerm && this.hasGrey) { + ansiStyles.dim.open = ''; + } + + for (const code of this._styles.slice().reverse()) { + // Replace any instances already present with a re-opening code + // otherwise only the part of the string until said closing code + // will be colored, and the rest will simply be 'plain'. + str = code.open + str.replace(code.closeRe, code.open) + code.close; + + // Close the styling before a linebreak and reopen + // after next line to fix a bleed issue on macOS + // https://github.com/chalk/chalk/pull/92 + str = str.replace(/\r?\n/g, `${code.close}$&${code.open}`); + } + + // Reset the original `dim` if we changed it to work around the Windows dimmed gray issue + ansiStyles.dim.open = originalDim; + + return str; + } + + function chalkTag(chalk, strings) { + if (!Array.isArray(strings)) { + // If chalk() was called by itself or with a string, + // return the string itself as a string. + return [].slice.call(arguments, 1).join(' '); + } + + const args = [].slice.call(arguments, 2); + const parts = [strings.raw[0]]; + + for (let i = 1; i < strings.length; i++) { + parts.push(String(args[i - 1]).replace(/[{}\\]/g, '\\$&')); + parts.push(String(strings.raw[i])); + } + + return template(chalk, parts.join('')); + } + + Object.defineProperties(Chalk.prototype, styles); + + module.exports = Chalk(); // eslint-disable-line new-cap + module.exports.supportsColor = stdoutColor; + module.exports.default = module.exports; // For TypeScript + + /***/ + }, + /* 31 */ + /***/ function (module, exports) { + var core = (module.exports = { version: '2.5.7' }); + if (typeof __e == 'number') __e = core; // eslint-disable-line no-undef + + /***/ + }, + /* 32 */ + /***/ function (module, exports, __webpack_require__) { + // Copyright 2015 Joyent, Inc. + + var Buffer = __webpack_require__(15).Buffer; + + var algInfo = { + dsa: { + parts: ['p', 'q', 'g', 'y'], + sizePart: 'p', + }, + rsa: { + parts: ['e', 'n'], + sizePart: 'n', + }, + ecdsa: { + parts: ['curve', 'Q'], + sizePart: 'Q', + }, + ed25519: { + parts: ['A'], + sizePart: 'A', + }, + }; + algInfo['curve25519'] = algInfo['ed25519']; + + var algPrivInfo = { + dsa: { + parts: ['p', 'q', 'g', 'y', 'x'], + }, + rsa: { + parts: ['n', 'e', 'd', 'iqmp', 'p', 'q'], + }, + ecdsa: { + parts: ['curve', 'Q', 'd'], + }, + ed25519: { + parts: ['A', 'k'], + }, + }; + algPrivInfo['curve25519'] = algPrivInfo['ed25519']; + + var hashAlgs = { + md5: true, + sha1: true, + sha256: true, + sha384: true, + sha512: true, + }; + + /* + * Taken from + * http://csrc.nist.gov/groups/ST/toolkit/documents/dss/NISTReCur.pdf + */ + var curves = { + nistp256: { + size: 256, + pkcs8oid: '1.2.840.10045.3.1.7', + p: Buffer.from( + ('00' + 'ffffffff 00000001 00000000 00000000' + '00000000 ffffffff ffffffff ffffffff').replace( + / /g, + '' + ), + 'hex' + ), + a: Buffer.from( + ('00' + 'FFFFFFFF 00000001 00000000 00000000' + '00000000 FFFFFFFF FFFFFFFF FFFFFFFC').replace( + / /g, + '' + ), + 'hex' + ), + b: Buffer.from( + ('5ac635d8 aa3a93e7 b3ebbd55 769886bc' + '651d06b0 cc53b0f6 3bce3c3e 27d2604b').replace(/ /g, ''), + 'hex' + ), + s: Buffer.from( + ('00' + 'c49d3608 86e70493 6a6678e1 139d26b7' + '819f7e90').replace(/ /g, ''), + 'hex' + ), + n: Buffer.from( + ('00' + 'ffffffff 00000000 ffffffff ffffffff' + 'bce6faad a7179e84 f3b9cac2 fc632551').replace( + / /g, + '' + ), + 'hex' + ), + G: Buffer.from( + ( + '04' + + '6b17d1f2 e12c4247 f8bce6e5 63a440f2' + + '77037d81 2deb33a0 f4a13945 d898c296' + + '4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16' + + '2bce3357 6b315ece cbb64068 37bf51f5' + ).replace(/ /g, ''), + 'hex' + ), + }, + nistp384: { + size: 384, + pkcs8oid: '1.3.132.0.34', + p: Buffer.from( + ( + '00' + + 'ffffffff ffffffff ffffffff ffffffff' + + 'ffffffff ffffffff ffffffff fffffffe' + + 'ffffffff 00000000 00000000 ffffffff' + ).replace(/ /g, ''), + 'hex' + ), + a: Buffer.from( + ( + '00' + + 'FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF' + + 'FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFE' + + 'FFFFFFFF 00000000 00000000 FFFFFFFC' + ).replace(/ /g, ''), + 'hex' + ), + b: Buffer.from( + ( + 'b3312fa7 e23ee7e4 988e056b e3f82d19' + + '181d9c6e fe814112 0314088f 5013875a' + + 'c656398d 8a2ed19d 2a85c8ed d3ec2aef' + ).replace(/ /g, ''), + 'hex' + ), + s: Buffer.from( + ('00' + 'a335926a a319a27a 1d00896a 6773a482' + '7acdac73').replace(/ /g, ''), + 'hex' + ), + n: Buffer.from( + ( + '00' + + 'ffffffff ffffffff ffffffff ffffffff' + + 'ffffffff ffffffff c7634d81 f4372ddf' + + '581a0db2 48b0a77a ecec196a ccc52973' + ).replace(/ /g, ''), + 'hex' + ), + G: Buffer.from( + ( + '04' + + 'aa87ca22 be8b0537 8eb1c71e f320ad74' + + '6e1d3b62 8ba79b98 59f741e0 82542a38' + + '5502f25d bf55296c 3a545e38 72760ab7' + + '3617de4a 96262c6f 5d9e98bf 9292dc29' + + 'f8f41dbd 289a147c e9da3113 b5f0b8c0' + + '0a60b1ce 1d7e819d 7a431d7c 90ea0e5f' + ).replace(/ /g, ''), + 'hex' + ), + }, + nistp521: { + size: 521, + pkcs8oid: '1.3.132.0.35', + p: Buffer.from( + ( + '01ffffff ffffffff ffffffff ffffffff' + + 'ffffffff ffffffff ffffffff ffffffff' + + 'ffffffff ffffffff ffffffff ffffffff' + + 'ffffffff ffffffff ffffffff ffffffff' + + 'ffff' + ).replace(/ /g, ''), + 'hex' + ), + a: Buffer.from( + ( + '01FF' + + 'FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF' + + 'FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF' + + 'FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF' + + 'FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFC' + ).replace(/ /g, ''), + 'hex' + ), + b: Buffer.from( + ( + '51' + + '953eb961 8e1c9a1f 929a21a0 b68540ee' + + 'a2da725b 99b315f3 b8b48991 8ef109e1' + + '56193951 ec7e937b 1652c0bd 3bb1bf07' + + '3573df88 3d2c34f1 ef451fd4 6b503f00' + ).replace(/ /g, ''), + 'hex' + ), + s: Buffer.from( + ('00' + 'd09e8800 291cb853 96cc6717 393284aa' + 'a0da64ba').replace(/ /g, ''), + 'hex' + ), + n: Buffer.from( + ( + '01ff' + + 'ffffffff ffffffff ffffffff ffffffff' + + 'ffffffff ffffffff ffffffff fffffffa' + + '51868783 bf2f966b 7fcc0148 f709a5d0' + + '3bb5c9b8 899c47ae bb6fb71e 91386409' + ).replace(/ /g, ''), + 'hex' + ), + G: Buffer.from( + ( + '04' + + '00c6 858e06b7 0404e9cd 9e3ecb66 2395b442' + + '9c648139 053fb521 f828af60 6b4d3dba' + + 'a14b5e77 efe75928 fe1dc127 a2ffa8de' + + '3348b3c1 856a429b f97e7e31 c2e5bd66' + + '0118 39296a78 9a3bc004 5c8a5fb4 2c7d1bd9' + + '98f54449 579b4468 17afbd17 273e662c' + + '97ee7299 5ef42640 c550b901 3fad0761' + + '353c7086 a272c240 88be9476 9fd16650' + ).replace(/ /g, ''), + 'hex' + ), + }, + }; + + module.exports = { + info: algInfo, + privInfo: algPrivInfo, + hashAlgs: hashAlgs, + curves: curves, + }; + + /***/ + }, + /* 33 */ + /***/ function (module, exports, __webpack_require__) { + // Copyright 2017 Joyent, Inc. + + module.exports = PrivateKey; + + var assert = __webpack_require__(16); + var Buffer = __webpack_require__(15).Buffer; + var algs = __webpack_require__(32); + var crypto = __webpack_require__(11); + var Fingerprint = __webpack_require__(156); + var Signature = __webpack_require__(75); + var errs = __webpack_require__(74); + var util = __webpack_require__(3); + var utils = __webpack_require__(26); + var dhe = __webpack_require__(325); + var generateECDSA = dhe.generateECDSA; + var generateED25519 = dhe.generateED25519; + var edCompat; + var nacl; + + try { + edCompat = __webpack_require__(454); + } catch (e) { + /* Just continue through, and bail out if we try to use it. */ + } + + var Key = __webpack_require__(27); + + var InvalidAlgorithmError = errs.InvalidAlgorithmError; + var KeyParseError = errs.KeyParseError; + var KeyEncryptedError = errs.KeyEncryptedError; + + var formats = {}; + formats['auto'] = __webpack_require__(455); + formats['pem'] = __webpack_require__(86); + formats['pkcs1'] = __webpack_require__(327); + formats['pkcs8'] = __webpack_require__(157); + formats['rfc4253'] = __webpack_require__(103); + formats['ssh-private'] = __webpack_require__(193); + formats['openssh'] = formats['ssh-private']; + formats['ssh'] = formats['ssh-private']; + formats['dnssec'] = __webpack_require__(326); + + function PrivateKey(opts) { + assert.object(opts, 'options'); + Key.call(this, opts); + + this._pubCache = undefined; + } + util.inherits(PrivateKey, Key); + + PrivateKey.formats = formats; + + PrivateKey.prototype.toBuffer = function (format, options) { + if (format === undefined) format = 'pkcs1'; + assert.string(format, 'format'); + assert.object(formats[format], 'formats[format]'); + assert.optionalObject(options, 'options'); + + return formats[format].write(this, options); + }; + + PrivateKey.prototype.hash = function (algo) { + return this.toPublic().hash(algo); + }; + + PrivateKey.prototype.toPublic = function () { + if (this._pubCache) return this._pubCache; + + var algInfo = algs.info[this.type]; + var pubParts = []; + for (var i = 0; i < algInfo.parts.length; ++i) { + var p = algInfo.parts[i]; + pubParts.push(this.part[p]); + } + + this._pubCache = new Key({ + type: this.type, + source: this, + parts: pubParts, + }); + if (this.comment) this._pubCache.comment = this.comment; + return this._pubCache; + }; + + PrivateKey.prototype.derive = function (newType) { + assert.string(newType, 'type'); + var priv, pub, pair; + + if (this.type === 'ed25519' && newType === 'curve25519') { + if (nacl === undefined) nacl = __webpack_require__(76); + + priv = this.part.k.data; + if (priv[0] === 0x00) priv = priv.slice(1); + + pair = nacl.box.keyPair.fromSecretKey(new Uint8Array(priv)); + pub = Buffer.from(pair.publicKey); + + return new PrivateKey({ + type: 'curve25519', + parts: [ + { name: 'A', data: utils.mpNormalize(pub) }, + { name: 'k', data: utils.mpNormalize(priv) }, + ], + }); + } else if (this.type === 'curve25519' && newType === 'ed25519') { + if (nacl === undefined) nacl = __webpack_require__(76); + + priv = this.part.k.data; + if (priv[0] === 0x00) priv = priv.slice(1); + + pair = nacl.sign.keyPair.fromSeed(new Uint8Array(priv)); + pub = Buffer.from(pair.publicKey); + + return new PrivateKey({ + type: 'ed25519', + parts: [ + { name: 'A', data: utils.mpNormalize(pub) }, + { name: 'k', data: utils.mpNormalize(priv) }, + ], + }); + } + throw new Error('Key derivation not supported from ' + this.type + ' to ' + newType); + }; + + PrivateKey.prototype.createVerify = function (hashAlgo) { + return this.toPublic().createVerify(hashAlgo); + }; + + PrivateKey.prototype.createSign = function (hashAlgo) { + if (hashAlgo === undefined) hashAlgo = this.defaultHashAlgorithm(); + assert.string(hashAlgo, 'hash algorithm'); + + /* ED25519 is not supported by OpenSSL, use a javascript impl. */ + if (this.type === 'ed25519' && edCompat !== undefined) return new edCompat.Signer(this, hashAlgo); + if (this.type === 'curve25519') + throw new Error('Curve25519 keys are not suitable for ' + 'signing or verification'); + + var v, nm, err; + try { + nm = hashAlgo.toUpperCase(); + v = crypto.createSign(nm); + } catch (e) { + err = e; + } + if (v === undefined || (err instanceof Error && err.message.match(/Unknown message digest/))) { + nm = 'RSA-'; + nm += hashAlgo.toUpperCase(); + v = crypto.createSign(nm); + } + assert.ok(v, 'failed to create verifier'); + var oldSign = v.sign.bind(v); + var key = this.toBuffer('pkcs1'); + var type = this.type; + var curve = this.curve; + v.sign = function () { + var sig = oldSign(key); + if (typeof sig === 'string') sig = Buffer.from(sig, 'binary'); + sig = Signature.parse(sig, type, 'asn1'); + sig.hashAlgorithm = hashAlgo; + sig.curve = curve; + return sig; + }; + return v; + }; + + PrivateKey.parse = function (data, format, options) { + if (typeof data !== 'string') assert.buffer(data, 'data'); + if (format === undefined) format = 'auto'; + assert.string(format, 'format'); + if (typeof options === 'string') options = { filename: options }; + assert.optionalObject(options, 'options'); + if (options === undefined) options = {}; + assert.optionalString(options.filename, 'options.filename'); + if (options.filename === undefined) options.filename = '(unnamed)'; + + assert.object(formats[format], 'formats[format]'); + + try { + var k = formats[format].read(data, options); + assert.ok(k instanceof PrivateKey, 'key is not a private key'); + if (!k.comment) k.comment = options.filename; + return k; + } catch (e) { + if (e.name === 'KeyEncryptedError') throw e; + throw new KeyParseError(options.filename, format, e); + } + }; + + PrivateKey.isPrivateKey = function (obj, ver) { + return utils.isCompatible(obj, PrivateKey, ver); + }; + + PrivateKey.generate = function (type, options) { + if (options === undefined) options = {}; + assert.object(options, 'options'); + + switch (type) { + case 'ecdsa': + if (options.curve === undefined) options.curve = 'nistp256'; + assert.string(options.curve, 'options.curve'); + return generateECDSA(options.curve); + case 'ed25519': + return generateED25519(); + default: + throw new Error('Key generation not supported with key ' + 'type "' + type + '"'); + } + }; + + /* + * API versions for PrivateKey: + * [1,0] -- initial ver + * [1,1] -- added auto, pkcs[18], openssh/ssh-private formats + * [1,2] -- added defaultHashAlgorithm + * [1,3] -- added derive, ed, createDH + * [1,4] -- first tagged version + * [1,5] -- changed ed25519 part names and format + */ + PrivateKey.prototype._sshpkApiVersion = [1, 5]; + + PrivateKey._oldVersionDetect = function (obj) { + assert.func(obj.toPublic); + assert.func(obj.createSign); + if (obj.derive) return [1, 3]; + if (obj.defaultHashAlgorithm) return [1, 2]; + if (obj.formats['auto']) return [1, 1]; + return [1, 0]; + }; + + /***/ + }, + /* 34 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + Object.defineProperty(exports, '__esModule', { + value: true, + }); + exports.wrapLifecycle = exports.run = exports.install = exports.Install = undefined; + + var _extends2; + + function _load_extends() { + return (_extends2 = _interopRequireDefault(__webpack_require__(20))); + } + + var _asyncToGenerator2; + + function _load_asyncToGenerator() { + return (_asyncToGenerator2 = _interopRequireDefault(__webpack_require__(2))); + } + + let install = (exports.install = (() => { + var _ref29 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + config, + reporter, + flags, + lockfile + ) { + yield wrapLifecycle( + config, + flags, + (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + const install = new Install(flags, config, reporter, lockfile); + yield install.init(); + }) + ); + }); + + return function install(_x7, _x8, _x9, _x10) { + return _ref29.apply(this, arguments); + }; + })()); + + let run = (exports.run = (() => { + var _ref31 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + config, + reporter, + flags, + args + ) { + let lockfile; + let error = 'installCommandRenamed'; + if (flags.lockfile === false) { + lockfile = new (_lockfile || _load_lockfile()).default(); + } else { + lockfile = yield (_lockfile || _load_lockfile()).default.fromDirectory( + config.lockfileFolder, + reporter + ); + } + + if (args.length) { + const exampleArgs = args.slice(); + + if (flags.saveDev) { + exampleArgs.push('--dev'); + } + if (flags.savePeer) { + exampleArgs.push('--peer'); + } + if (flags.saveOptional) { + exampleArgs.push('--optional'); + } + if (flags.saveExact) { + exampleArgs.push('--exact'); + } + if (flags.saveTilde) { + exampleArgs.push('--tilde'); + } + let command = 'add'; + if (flags.global) { + error = 'globalFlagRemoved'; + command = 'global add'; + } + throw new (_errors || _load_errors()).MessageError( + reporter.lang(error, `yarn ${command} ${exampleArgs.join(' ')}`) + ); + } + + yield install(config, reporter, flags, lockfile); + }); + + return function run(_x11, _x12, _x13, _x14) { + return _ref31.apply(this, arguments); + }; + })()); + + let wrapLifecycle = (exports.wrapLifecycle = (() => { + var _ref32 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + config, + flags, + factory + ) { + yield config.executeLifecycleScript('preinstall'); + + yield factory(); + + // npm behaviour, seems kinda funky but yay compatibility + yield config.executeLifecycleScript('install'); + yield config.executeLifecycleScript('postinstall'); + + if (!config.production) { + if (!config.disablePrepublish) { + yield config.executeLifecycleScript('prepublish'); + } + yield config.executeLifecycleScript('prepare'); + } + }); + + return function wrapLifecycle(_x15, _x16, _x17) { + return _ref32.apply(this, arguments); + }; + })()); + + exports.hasWrapper = hasWrapper; + exports.setFlags = setFlags; + + var _objectPath; + + function _load_objectPath() { + return (_objectPath = _interopRequireDefault(__webpack_require__(304))); + } + + var _hooks; + + function _load_hooks() { + return (_hooks = __webpack_require__(368)); + } + + var _index; + + function _load_index() { + return (_index = _interopRequireDefault(__webpack_require__(218))); + } + + var _errors; + + function _load_errors() { + return (_errors = __webpack_require__(6)); + } + + var _integrityChecker; + + function _load_integrityChecker() { + return (_integrityChecker = _interopRequireDefault(__webpack_require__(206))); + } + + var _lockfile; + + function _load_lockfile() { + return (_lockfile = _interopRequireDefault(__webpack_require__(19))); + } + + var _lockfile2; + + function _load_lockfile2() { + return (_lockfile2 = __webpack_require__(19)); + } + + var _packageFetcher; + + function _load_packageFetcher() { + return (_packageFetcher = _interopRequireWildcard(__webpack_require__(208))); + } + + var _packageInstallScripts; + + function _load_packageInstallScripts() { + return (_packageInstallScripts = _interopRequireDefault(__webpack_require__(525))); + } + + var _packageCompatibility; + + function _load_packageCompatibility() { + return (_packageCompatibility = _interopRequireWildcard(__webpack_require__(207))); + } + + var _packageResolver; + + function _load_packageResolver() { + return (_packageResolver = _interopRequireDefault(__webpack_require__(360))); + } + + var _packageLinker; + + function _load_packageLinker() { + return (_packageLinker = _interopRequireDefault(__webpack_require__(209))); + } + + var _index2; + + function _load_index2() { + return (_index2 = __webpack_require__(58)); + } + + var _index3; + + function _load_index3() { + return (_index3 = __webpack_require__(78)); + } + + var _autoclean; + + function _load_autoclean() { + return (_autoclean = __webpack_require__(348)); + } + + var _constants; + + function _load_constants() { + return (_constants = _interopRequireWildcard(__webpack_require__(8))); + } + + var _normalizePattern; + + function _load_normalizePattern() { + return (_normalizePattern = __webpack_require__(37)); + } + + var _fs; + + function _load_fs() { + return (_fs = _interopRequireWildcard(__webpack_require__(5))); + } + + var _map; + + function _load_map() { + return (_map = _interopRequireDefault(__webpack_require__(29))); + } + + var _yarnVersion; + + function _load_yarnVersion() { + return (_yarnVersion = __webpack_require__(105)); + } + + var _generatePnpMap; + + function _load_generatePnpMap() { + return (_generatePnpMap = __webpack_require__(547)); + } + + var _workspaceLayout; + + function _load_workspaceLayout() { + return (_workspaceLayout = _interopRequireDefault(__webpack_require__(90))); + } + + var _resolutionMap; + + function _load_resolutionMap() { + return (_resolutionMap = _interopRequireDefault(__webpack_require__(212))); + } + + var _guessName; + + function _load_guessName() { + return (_guessName = _interopRequireDefault(__webpack_require__(169))); + } + + var _audit; + + function _load_audit() { + return (_audit = _interopRequireDefault(__webpack_require__(347))); + } + + function _interopRequireWildcard(obj) { + if (obj && obj.__esModule) { + return obj; + } else { + var newObj = {}; + if (obj != null) { + for (var key in obj) { + if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; + } + } + newObj.default = obj; + return newObj; + } + } + + function _interopRequireDefault(obj) { + return obj && obj.__esModule ? obj : { default: obj }; + } + + const deepEqual = __webpack_require__(599); + + const emoji = __webpack_require__(302); + const invariant = __webpack_require__(9); + const path = __webpack_require__(0); + const semver = __webpack_require__(22); + const uuid = __webpack_require__(120); + const ssri = __webpack_require__(65); + + const ONE_DAY = 1000 * 60 * 60 * 24; + + /** + * Try and detect the installation method for Yarn and provide a command to update it with. + */ + + function getUpdateCommand(installationMethod) { + if (installationMethod === 'tar') { + return `curl --compressed -o- -L ${(_constants || _load_constants()).YARN_INSTALLER_SH} | bash`; + } + + if (installationMethod === 'homebrew') { + return 'brew upgrade yarn'; + } + + if (installationMethod === 'deb') { + return 'sudo apt-get update && sudo apt-get install yarn'; + } + + if (installationMethod === 'rpm') { + return 'sudo yum install yarn'; + } + + if (installationMethod === 'npm') { + return 'npm install --global yarn'; + } + + if (installationMethod === 'chocolatey') { + return 'choco upgrade yarn'; + } + + if (installationMethod === 'apk') { + return 'apk update && apk add -u yarn'; + } + + if (installationMethod === 'portage') { + return 'sudo emerge --sync && sudo emerge -au sys-apps/yarn'; + } + + return null; + } + + function getUpdateInstaller(installationMethod) { + // Windows + if (installationMethod === 'msi') { + return (_constants || _load_constants()).YARN_INSTALLER_MSI; + } + + return null; + } + + function normalizeFlags(config, rawFlags) { + const flags = { + // install + har: !!rawFlags.har, + ignorePlatform: !!rawFlags.ignorePlatform, + ignoreEngines: !!rawFlags.ignoreEngines, + ignoreScripts: !!rawFlags.ignoreScripts, + ignoreOptional: !!rawFlags.ignoreOptional, + force: !!rawFlags.force, + flat: !!rawFlags.flat, + lockfile: rawFlags.lockfile !== false, + pureLockfile: !!rawFlags.pureLockfile, + updateChecksums: !!rawFlags.updateChecksums, + skipIntegrityCheck: !!rawFlags.skipIntegrityCheck, + frozenLockfile: !!rawFlags.frozenLockfile, + linkDuplicates: !!rawFlags.linkDuplicates, + checkFiles: !!rawFlags.checkFiles, + audit: !!rawFlags.audit, + + // add + peer: !!rawFlags.peer, + dev: !!rawFlags.dev, + optional: !!rawFlags.optional, + exact: !!rawFlags.exact, + tilde: !!rawFlags.tilde, + ignoreWorkspaceRootCheck: !!rawFlags.ignoreWorkspaceRootCheck, + + // outdated, update-interactive + includeWorkspaceDeps: !!rawFlags.includeWorkspaceDeps, + + // add, remove, update + workspaceRootIsCwd: rawFlags.workspaceRootIsCwd !== false, + }; + + if (config.getOption('ignore-scripts')) { + flags.ignoreScripts = true; + } + + if (config.getOption('ignore-platform')) { + flags.ignorePlatform = true; + } + + if (config.getOption('ignore-engines')) { + flags.ignoreEngines = true; + } + + if (config.getOption('ignore-optional')) { + flags.ignoreOptional = true; + } + + if (config.getOption('force')) { + flags.force = true; + } + + return flags; + } + + class Install { + constructor(flags, config, reporter, lockfile) { + this.rootManifestRegistries = []; + this.rootPatternsToOrigin = (0, (_map || _load_map()).default)(); + this.lockfile = lockfile; + this.reporter = reporter; + this.config = config; + this.flags = normalizeFlags(config, flags); + this.resolutions = (0, (_map || _load_map()).default)(); // Legacy resolutions field used for flat install mode + this.resolutionMap = new (_resolutionMap || _load_resolutionMap()).default(config); // Selective resolutions for nested dependencies + this.resolver = new (_packageResolver || _load_packageResolver()).default( + config, + lockfile, + this.resolutionMap + ); + this.integrityChecker = new (_integrityChecker || _load_integrityChecker()).default(config); + this.linker = new (_packageLinker || _load_packageLinker()).default(config, this.resolver); + this.scripts = new (_packageInstallScripts || _load_packageInstallScripts()).default( + config, + this.resolver, + this.flags.force + ); + } + + /** + * Create a list of dependency requests from the current directories manifests. + */ + + fetchRequestFromCwd(excludePatterns = [], ignoreUnusedPatterns = false) { + var _this = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + const patterns = []; + const deps = []; + let resolutionDeps = []; + const manifest = {}; + + const ignorePatterns = []; + const usedPatterns = []; + let workspaceLayout; + + // some commands should always run in the context of the entire workspace + const cwd = + _this.flags.includeWorkspaceDeps || _this.flags.workspaceRootIsCwd + ? _this.config.lockfileFolder + : _this.config.cwd; + + // non-workspaces are always root, otherwise check for workspace root + const cwdIsRoot = !_this.config.workspaceRootFolder || _this.config.lockfileFolder === cwd; + + // exclude package names that are in install args + const excludeNames = []; + for ( + var _iterator = excludePatterns, + _isArray = Array.isArray(_iterator), + _i = 0, + _iterator = _isArray ? _iterator : _iterator[Symbol.iterator](); + ; + + ) { + var _ref; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref = _i.value; + } + + const pattern = _ref; + + if ((0, (_index3 || _load_index3()).getExoticResolver)(pattern)) { + excludeNames.push((0, (_guessName || _load_guessName()).default)(pattern)); + } else { + // extract the name + const parts = (0, (_normalizePattern || _load_normalizePattern()).normalizePattern)(pattern); + excludeNames.push(parts.name); + } + } + + const stripExcluded = function stripExcluded(manifest) { + for ( + var _iterator2 = excludeNames, + _isArray2 = Array.isArray(_iterator2), + _i2 = 0, + _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator](); + ; + + ) { + var _ref2; + + if (_isArray2) { + if (_i2 >= _iterator2.length) break; + _ref2 = _iterator2[_i2++]; + } else { + _i2 = _iterator2.next(); + if (_i2.done) break; + _ref2 = _i2.value; + } + + const exclude = _ref2; + + if (manifest.dependencies && manifest.dependencies[exclude]) { + delete manifest.dependencies[exclude]; + } + if (manifest.devDependencies && manifest.devDependencies[exclude]) { + delete manifest.devDependencies[exclude]; + } + if (manifest.optionalDependencies && manifest.optionalDependencies[exclude]) { + delete manifest.optionalDependencies[exclude]; + } + } + }; + + for ( + var _iterator3 = Object.keys((_index2 || _load_index2()).registries), + _isArray3 = Array.isArray(_iterator3), + _i3 = 0, + _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator](); + ; + + ) { + var _ref3; + + if (_isArray3) { + if (_i3 >= _iterator3.length) break; + _ref3 = _iterator3[_i3++]; + } else { + _i3 = _iterator3.next(); + if (_i3.done) break; + _ref3 = _i3.value; + } + + const registry = _ref3; + + const filename = (_index2 || _load_index2()).registries[registry].filename; + + const loc = path.join(cwd, filename); + if (!(yield (_fs || _load_fs()).exists(loc))) { + continue; + } + + _this.rootManifestRegistries.push(registry); + + const projectManifestJson = yield _this.config.readJson(loc); + yield (0, (_index || _load_index()).default)(projectManifestJson, cwd, _this.config, cwdIsRoot); + + Object.assign(_this.resolutions, projectManifestJson.resolutions); + Object.assign(manifest, projectManifestJson); + + _this.resolutionMap.init(_this.resolutions); + for ( + var _iterator4 = Object.keys(_this.resolutionMap.resolutionsByPackage), + _isArray4 = Array.isArray(_iterator4), + _i4 = 0, + _iterator4 = _isArray4 ? _iterator4 : _iterator4[Symbol.iterator](); + ; + + ) { + var _ref4; + + if (_isArray4) { + if (_i4 >= _iterator4.length) break; + _ref4 = _iterator4[_i4++]; + } else { + _i4 = _iterator4.next(); + if (_i4.done) break; + _ref4 = _i4.value; + } + + const packageName = _ref4; + + const optional = + (_objectPath || _load_objectPath()).default.has( + manifest.optionalDependencies, + packageName + ) && _this.flags.ignoreOptional; + for ( + var _iterator8 = _this.resolutionMap.resolutionsByPackage[packageName], + _isArray8 = Array.isArray(_iterator8), + _i8 = 0, + _iterator8 = _isArray8 ? _iterator8 : _iterator8[Symbol.iterator](); + ; + + ) { + var _ref9; + + if (_isArray8) { + if (_i8 >= _iterator8.length) break; + _ref9 = _iterator8[_i8++]; + } else { + _i8 = _iterator8.next(); + if (_i8.done) break; + _ref9 = _i8.value; + } + + const _ref8 = _ref9; + const pattern = _ref8.pattern; + + resolutionDeps = [...resolutionDeps, { registry, pattern, optional, hint: 'resolution' }]; + } + } + + const pushDeps = function pushDeps(depType, manifest, { hint, optional }, isUsed) { + if (ignoreUnusedPatterns && !isUsed) { + return; + } + // We only take unused dependencies into consideration to get deterministic hoisting. + // Since flat mode doesn't care about hoisting and everything is top level and specified then we can safely + // leave these out. + if (_this.flags.flat && !isUsed) { + return; + } + const depMap = manifest[depType]; + for (const name in depMap) { + if (excludeNames.indexOf(name) >= 0) { + continue; + } + + let pattern = name; + if (!_this.lockfile.getLocked(pattern)) { + // when we use --save we save the dependency to the lockfile with just the name rather than the + // version combo + pattern += '@' + depMap[name]; + } + + // normalization made sure packages are mentioned only once + if (isUsed) { + usedPatterns.push(pattern); + } else { + ignorePatterns.push(pattern); + } + + _this.rootPatternsToOrigin[pattern] = depType; + patterns.push(pattern); + deps.push({ + pattern, + registry, + hint, + optional, + workspaceName: manifest.name, + workspaceLoc: manifest._loc, + }); + } + }; + + if (cwdIsRoot) { + pushDeps('dependencies', projectManifestJson, { hint: null, optional: false }, true); + pushDeps( + 'devDependencies', + projectManifestJson, + { hint: 'dev', optional: false }, + !_this.config.production + ); + pushDeps( + 'optionalDependencies', + projectManifestJson, + { hint: 'optional', optional: true }, + true + ); + } + + if (_this.config.workspaceRootFolder) { + const workspaceLoc = cwdIsRoot ? loc : path.join(_this.config.lockfileFolder, filename); + const workspacesRoot = path.dirname(workspaceLoc); + + let workspaceManifestJson = projectManifestJson; + if (!cwdIsRoot) { + // the manifest we read before was a child workspace, so get the root + workspaceManifestJson = yield _this.config.readJson(workspaceLoc); + yield (0, (_index || _load_index()).default)( + workspaceManifestJson, + workspacesRoot, + _this.config, + true + ); + } + + const workspaces = yield _this.config.resolveWorkspaces( + workspacesRoot, + workspaceManifestJson + ); + workspaceLayout = new (_workspaceLayout || _load_workspaceLayout()).default( + workspaces, + _this.config + ); + + // add virtual manifest that depends on all workspaces, this way package hoisters and resolvers will work fine + const workspaceDependencies = (0, (_extends2 || _load_extends()).default)( + {}, + workspaceManifestJson.dependencies + ); + for ( + var _iterator5 = Object.keys(workspaces), + _isArray5 = Array.isArray(_iterator5), + _i5 = 0, + _iterator5 = _isArray5 ? _iterator5 : _iterator5[Symbol.iterator](); + ; + + ) { + var _ref5; + + if (_isArray5) { + if (_i5 >= _iterator5.length) break; + _ref5 = _iterator5[_i5++]; + } else { + _i5 = _iterator5.next(); + if (_i5.done) break; + _ref5 = _i5.value; + } + + const workspaceName = _ref5; + + const workspaceManifest = workspaces[workspaceName].manifest; + workspaceDependencies[workspaceName] = workspaceManifest.version; + + // include dependencies from all workspaces + if (_this.flags.includeWorkspaceDeps) { + pushDeps('dependencies', workspaceManifest, { hint: null, optional: false }, true); + pushDeps( + 'devDependencies', + workspaceManifest, + { hint: 'dev', optional: false }, + !_this.config.production + ); + pushDeps( + 'optionalDependencies', + workspaceManifest, + { hint: 'optional', optional: true }, + true + ); + } + } + const virtualDependencyManifest = { + _uid: '', + name: `workspace-aggregator-${uuid.v4()}`, + version: '1.0.0', + _registry: 'npm', + _loc: workspacesRoot, + dependencies: workspaceDependencies, + devDependencies: (0, (_extends2 || _load_extends()).default)( + {}, + workspaceManifestJson.devDependencies + ), + optionalDependencies: (0, (_extends2 || _load_extends()).default)( + {}, + workspaceManifestJson.optionalDependencies + ), + private: workspaceManifestJson.private, + workspaces: workspaceManifestJson.workspaces, + }; + workspaceLayout.virtualManifestName = virtualDependencyManifest.name; + const virtualDep = {}; + virtualDep[virtualDependencyManifest.name] = virtualDependencyManifest.version; + workspaces[virtualDependencyManifest.name] = { + loc: workspacesRoot, + manifest: virtualDependencyManifest, + }; + + // ensure dependencies that should be excluded are stripped from the correct manifest + stripExcluded( + cwdIsRoot ? virtualDependencyManifest : workspaces[projectManifestJson.name].manifest + ); + + pushDeps( + 'workspaces', + { workspaces: virtualDep }, + { hint: 'workspaces', optional: false }, + true + ); + + const implicitWorkspaceDependencies = (0, (_extends2 || _load_extends()).default)( + {}, + workspaceDependencies + ); + + for ( + var _iterator6 = (_constants || _load_constants()).OWNED_DEPENDENCY_TYPES, + _isArray6 = Array.isArray(_iterator6), + _i6 = 0, + _iterator6 = _isArray6 ? _iterator6 : _iterator6[Symbol.iterator](); + ; + + ) { + var _ref6; + + if (_isArray6) { + if (_i6 >= _iterator6.length) break; + _ref6 = _iterator6[_i6++]; + } else { + _i6 = _iterator6.next(); + if (_i6.done) break; + _ref6 = _i6.value; + } + + const type = _ref6; + + for ( + var _iterator7 = Object.keys(projectManifestJson[type] || {}), + _isArray7 = Array.isArray(_iterator7), + _i7 = 0, + _iterator7 = _isArray7 ? _iterator7 : _iterator7[Symbol.iterator](); + ; + + ) { + var _ref7; + + if (_isArray7) { + if (_i7 >= _iterator7.length) break; + _ref7 = _iterator7[_i7++]; + } else { + _i7 = _iterator7.next(); + if (_i7.done) break; + _ref7 = _i7.value; + } + + const dependencyName = _ref7; + + delete implicitWorkspaceDependencies[dependencyName]; + } + } + + pushDeps( + 'dependencies', + { dependencies: implicitWorkspaceDependencies }, + { hint: 'workspaces', optional: false }, + true + ); + } + + break; + } + + // inherit root flat flag + if (manifest.flat) { + _this.flags.flat = true; + } + + return { + requests: [...resolutionDeps, ...deps], + patterns, + manifest, + usedPatterns, + ignorePatterns, + workspaceLayout, + }; + })(); + } + + /** + * TODO description + */ + + prepareRequests(requests) { + return requests; + } + + preparePatterns(patterns) { + return patterns; + } + preparePatternsForLinking(patterns, cwdManifest, cwdIsRoot) { + return patterns; + } + + prepareManifests() { + var _this2 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + const manifests = yield _this2.config.getRootManifests(); + return manifests; + })(); + } + + bailout(patterns, workspaceLayout) { + var _this3 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + // We don't want to skip the audit - it could yield important errors + if (_this3.flags.audit) { + return false; + } + // PNP is so fast that the integrity check isn't pertinent + if (_this3.config.plugnplayEnabled) { + return false; + } + if (_this3.flags.skipIntegrityCheck || _this3.flags.force) { + return false; + } + const lockfileCache = _this3.lockfile.cache; + if (!lockfileCache) { + return false; + } + const lockfileClean = _this3.lockfile.parseResultType === 'success'; + const match = yield _this3.integrityChecker.check( + patterns, + lockfileCache, + _this3.flags, + workspaceLayout + ); + if (_this3.flags.frozenLockfile && (!lockfileClean || match.missingPatterns.length > 0)) { + throw new (_errors || _load_errors()).MessageError(_this3.reporter.lang('frozenLockfileError')); + } + + const haveLockfile = yield (_fs || _load_fs()).exists( + path.join(_this3.config.lockfileFolder, (_constants || _load_constants()).LOCKFILE_FILENAME) + ); + + const lockfileIntegrityPresent = !_this3.lockfile.hasEntriesExistWithoutIntegrity(); + const integrityBailout = lockfileIntegrityPresent || !_this3.config.autoAddIntegrity; + + if (match.integrityMatches && haveLockfile && lockfileClean && integrityBailout) { + _this3.reporter.success(_this3.reporter.lang('upToDate')); + return true; + } + + if (match.integrityFileMissing && haveLockfile) { + // Integrity file missing, force script installations + _this3.scripts.setForce(true); + return false; + } + + if (match.hardRefreshRequired) { + // e.g. node version doesn't match, force script installations + _this3.scripts.setForce(true); + return false; + } + + if (!patterns.length && !match.integrityFileMissing) { + _this3.reporter.success(_this3.reporter.lang('nothingToInstall')); + yield _this3.createEmptyManifestFolders(); + yield _this3.saveLockfileAndIntegrity(patterns, workspaceLayout); + return true; + } + + return false; + })(); + } + + /** + * Produce empty folders for all used root manifests. + */ + + createEmptyManifestFolders() { + var _this4 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + if (_this4.config.modulesFolder) { + // already created + return; + } + + for ( + var _iterator9 = _this4.rootManifestRegistries, + _isArray9 = Array.isArray(_iterator9), + _i9 = 0, + _iterator9 = _isArray9 ? _iterator9 : _iterator9[Symbol.iterator](); + ; + + ) { + var _ref10; + + if (_isArray9) { + if (_i9 >= _iterator9.length) break; + _ref10 = _iterator9[_i9++]; + } else { + _i9 = _iterator9.next(); + if (_i9.done) break; + _ref10 = _i9.value; + } + + const registryName = _ref10; + const folder = _this4.config.registries[registryName].folder; + + yield (_fs || _load_fs()).mkdirp(path.join(_this4.config.lockfileFolder, folder)); + } + })(); + } + + /** + * TODO description + */ + + markIgnored(patterns) { + for ( + var _iterator10 = patterns, + _isArray10 = Array.isArray(_iterator10), + _i10 = 0, + _iterator10 = _isArray10 ? _iterator10 : _iterator10[Symbol.iterator](); + ; + + ) { + var _ref11; + + if (_isArray10) { + if (_i10 >= _iterator10.length) break; + _ref11 = _iterator10[_i10++]; + } else { + _i10 = _iterator10.next(); + if (_i10.done) break; + _ref11 = _i10.value; + } + + const pattern = _ref11; + + const manifest = this.resolver.getStrictResolvedPattern(pattern); + const ref = manifest._reference; + invariant(ref, 'expected package reference'); + + // just mark the package as ignored. if the package is used by a required package, the hoister + // will take care of that. + ref.ignore = true; + } + } + + /** + * helper method that gets only recent manifests + * used by global.ls command + */ + getFlattenedDeps() { + var _this5 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + var _ref12 = yield _this5.fetchRequestFromCwd(); + + const depRequests = _ref12.requests, + rawPatterns = _ref12.patterns; + + yield _this5.resolver.init(depRequests, {}); + + const manifests = yield (_packageFetcher || _load_packageFetcher()).fetch( + _this5.resolver.getManifests(), + _this5.config + ); + _this5.resolver.updateManifests(manifests); + + return _this5.flatten(rawPatterns); + })(); + } + + /** + * TODO description + */ + + init() { + var _this6 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + _this6.checkUpdate(); + + // warn if we have a shrinkwrap + if ( + yield (_fs || _load_fs()).exists( + path.join( + _this6.config.lockfileFolder, + (_constants || _load_constants()).NPM_SHRINKWRAP_FILENAME + ) + ) + ) { + _this6.reporter.warn(_this6.reporter.lang('shrinkwrapWarning')); + } + + // warn if we have an npm lockfile + if ( + yield (_fs || _load_fs()).exists( + path.join(_this6.config.lockfileFolder, (_constants || _load_constants()).NPM_LOCK_FILENAME) + ) + ) { + _this6.reporter.warn(_this6.reporter.lang('npmLockfileWarning')); + } + + if (_this6.config.plugnplayEnabled) { + _this6.reporter.info(_this6.reporter.lang('plugnplaySuggestV2L1')); + _this6.reporter.info(_this6.reporter.lang('plugnplaySuggestV2L2')); + } + + let flattenedTopLevelPatterns = []; + const steps = []; + + var _ref13 = yield _this6.fetchRequestFromCwd(); + + const depRequests = _ref13.requests, + rawPatterns = _ref13.patterns, + ignorePatterns = _ref13.ignorePatterns, + workspaceLayout = _ref13.workspaceLayout, + manifest = _ref13.manifest; + + let topLevelPatterns = []; + + const artifacts = yield _this6.integrityChecker.getArtifacts(); + if (artifacts) { + _this6.linker.setArtifacts(artifacts); + _this6.scripts.setArtifacts(artifacts); + } + + if ((_packageCompatibility || _load_packageCompatibility()).shouldCheck(manifest, _this6.flags)) { + steps.push( + (() => { + var _ref14 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + curr, + total + ) { + _this6.reporter.step( + curr, + total, + _this6.reporter.lang('checkingManifest'), + emoji.get('mag') + ); + yield _this6.checkCompatibility(); + }); + + return function (_x, _x2) { + return _ref14.apply(this, arguments); + }; + })() + ); + } + + const audit = new (_audit || _load_audit()).default(_this6.config, _this6.reporter, { + groups: (_constants || _load_constants()).OWNED_DEPENDENCY_TYPES, + }); + let auditFoundProblems = false; + + steps.push(function (curr, total) { + return (0, (_hooks || _load_hooks()).callThroughHook)( + 'resolveStep', + (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + _this6.reporter.step( + curr, + total, + _this6.reporter.lang('resolvingPackages'), + emoji.get('mag') + ); + yield _this6.resolver.init(_this6.prepareRequests(depRequests), { + isFlat: _this6.flags.flat, + isFrozen: _this6.flags.frozenLockfile, + workspaceLayout, + }); + topLevelPatterns = _this6.preparePatterns(rawPatterns); + flattenedTopLevelPatterns = yield _this6.flatten(topLevelPatterns); + return { + bailout: !_this6.flags.audit && (yield _this6.bailout(topLevelPatterns, workspaceLayout)), + }; + }) + ); + }); + + if (_this6.flags.audit) { + steps.push(function (curr, total) { + return (0, (_hooks || _load_hooks()).callThroughHook)( + 'auditStep', + (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + _this6.reporter.step(curr, total, _this6.reporter.lang('auditRunning'), emoji.get('mag')); + if (_this6.flags.offline) { + _this6.reporter.warn(_this6.reporter.lang('auditOffline')); + return { bailout: false }; + } + const preparedManifests = yield _this6.prepareManifests(); + // $FlowFixMe - Flow considers `m` in the map operation to be "mixed", so does not recognize `m.object` + const mergedManifest = Object.assign( + {}, + ...Object.values(preparedManifests).map(function (m) { + return m.object; + }) + ); + const auditVulnerabilityCounts = yield audit.performAudit( + mergedManifest, + _this6.lockfile, + _this6.resolver, + _this6.linker, + topLevelPatterns + ); + auditFoundProblems = + auditVulnerabilityCounts.info || + auditVulnerabilityCounts.low || + auditVulnerabilityCounts.moderate || + auditVulnerabilityCounts.high || + auditVulnerabilityCounts.critical; + return { bailout: yield _this6.bailout(topLevelPatterns, workspaceLayout) }; + }) + ); + }); + } + + steps.push(function (curr, total) { + return (0, (_hooks || _load_hooks()).callThroughHook)( + 'fetchStep', + (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + _this6.markIgnored(ignorePatterns); + _this6.reporter.step( + curr, + total, + _this6.reporter.lang('fetchingPackages'), + emoji.get('truck') + ); + const manifests = yield (_packageFetcher || _load_packageFetcher()).fetch( + _this6.resolver.getManifests(), + _this6.config + ); + _this6.resolver.updateManifests(manifests); + yield (_packageCompatibility || _load_packageCompatibility()).check( + _this6.resolver.getManifests(), + _this6.config, + _this6.flags.ignoreEngines + ); + }) + ); + }); + + steps.push(function (curr, total) { + return (0, (_hooks || _load_hooks()).callThroughHook)( + 'linkStep', + (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + // remove integrity hash to make this operation atomic + yield _this6.integrityChecker.removeIntegrityFile(); + _this6.reporter.step( + curr, + total, + _this6.reporter.lang('linkingDependencies'), + emoji.get('link') + ); + flattenedTopLevelPatterns = _this6.preparePatternsForLinking( + flattenedTopLevelPatterns, + manifest, + _this6.config.lockfileFolder === _this6.config.cwd + ); + yield _this6.linker.init(flattenedTopLevelPatterns, workspaceLayout, { + linkDuplicates: _this6.flags.linkDuplicates, + ignoreOptional: _this6.flags.ignoreOptional, + }); + }) + ); + }); + + if (_this6.config.plugnplayEnabled) { + steps.push(function (curr, total) { + return (0, (_hooks || _load_hooks()).callThroughHook)( + 'pnpStep', + (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + const pnpPath = `${_this6.config.lockfileFolder}/${ + (_constants || _load_constants()).PNP_FILENAME + }`; + + const code = yield (0, (_generatePnpMap || _load_generatePnpMap()).generatePnpMap)( + _this6.config, + flattenedTopLevelPatterns, + { + resolver: _this6.resolver, + reporter: _this6.reporter, + targetPath: pnpPath, + workspaceLayout, + } + ); + + try { + const file = yield (_fs || _load_fs()).readFile(pnpPath); + if (file === code) { + return; + } + } catch (error) {} + + yield (_fs || _load_fs()).writeFile(pnpPath, code); + yield (_fs || _load_fs()).chmod(pnpPath, 0o755); + }) + ); + }); + } + + steps.push(function (curr, total) { + return (0, (_hooks || _load_hooks()).callThroughHook)( + 'buildStep', + (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + _this6.reporter.step( + curr, + total, + _this6.flags.force + ? _this6.reporter.lang('rebuildingPackages') + : _this6.reporter.lang('buildingFreshPackages'), + emoji.get('hammer') + ); + + if (_this6.config.ignoreScripts) { + _this6.reporter.warn(_this6.reporter.lang('ignoredScripts')); + } else { + yield _this6.scripts.init(flattenedTopLevelPatterns); + } + }) + ); + }); + + if (_this6.flags.har) { + steps.push( + (() => { + var _ref21 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + curr, + total + ) { + const formattedDate = new Date().toISOString().replace(/:/g, '-'); + const filename = `yarn-install_${formattedDate}.har`; + _this6.reporter.step( + curr, + total, + _this6.reporter.lang('savingHar', filename), + emoji.get('black_circle_for_record') + ); + yield _this6.config.requestManager.saveHar(filename); + }); + + return function (_x3, _x4) { + return _ref21.apply(this, arguments); + }; + })() + ); + } + + if (yield _this6.shouldClean()) { + steps.push( + (() => { + var _ref22 = (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* ( + curr, + total + ) { + _this6.reporter.step( + curr, + total, + _this6.reporter.lang('cleaningModules'), + emoji.get('recycle') + ); + yield (0, (_autoclean || _load_autoclean()).clean)(_this6.config, _this6.reporter); + }); + + return function (_x5, _x6) { + return _ref22.apply(this, arguments); + }; + })() + ); + } + + let currentStep = 0; + for ( + var _iterator11 = steps, + _isArray11 = Array.isArray(_iterator11), + _i11 = 0, + _iterator11 = _isArray11 ? _iterator11 : _iterator11[Symbol.iterator](); + ; + + ) { + var _ref23; + + if (_isArray11) { + if (_i11 >= _iterator11.length) break; + _ref23 = _iterator11[_i11++]; + } else { + _i11 = _iterator11.next(); + if (_i11.done) break; + _ref23 = _i11.value; + } + + const step = _ref23; + + const stepResult = yield step(++currentStep, steps.length); + if (stepResult && stepResult.bailout) { + if (_this6.flags.audit) { + audit.summary(); + } + if (auditFoundProblems) { + _this6.reporter.warn(_this6.reporter.lang('auditRunAuditForDetails')); + } + _this6.maybeOutputUpdate(); + return flattenedTopLevelPatterns; + } + } + + // fin! + if (_this6.flags.audit) { + audit.summary(); + } + if (auditFoundProblems) { + _this6.reporter.warn(_this6.reporter.lang('auditRunAuditForDetails')); + } + yield _this6.saveLockfileAndIntegrity(topLevelPatterns, workspaceLayout); + yield _this6.persistChanges(); + _this6.maybeOutputUpdate(); + _this6.config.requestManager.clearCache(); + return flattenedTopLevelPatterns; + })(); + } + + checkCompatibility() { + var _this7 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + var _ref24 = yield _this7.fetchRequestFromCwd(); + + const manifest = _ref24.manifest; + + yield (_packageCompatibility || _load_packageCompatibility()).checkOne( + manifest, + _this7.config, + _this7.flags.ignoreEngines + ); + })(); + } + + persistChanges() { + var _this8 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + // get all the different registry manifests in this folder + const manifests = yield _this8.config.getRootManifests(); + + if (yield _this8.applyChanges(manifests)) { + yield _this8.config.saveRootManifests(manifests); + } + })(); + } + + applyChanges(manifests) { + let hasChanged = false; + + if (this.config.plugnplayPersist) { + const object = manifests.npm.object; + + if (typeof object.installConfig !== 'object') { + object.installConfig = {}; + } + + if (this.config.plugnplayEnabled && object.installConfig.pnp !== true) { + object.installConfig.pnp = true; + hasChanged = true; + } else if (!this.config.plugnplayEnabled && typeof object.installConfig.pnp !== 'undefined') { + delete object.installConfig.pnp; + hasChanged = true; + } + + if (Object.keys(object.installConfig).length === 0) { + delete object.installConfig; + } + } + + return Promise.resolve(hasChanged); + } + + /** + * Check if we should run the cleaning step. + */ + + shouldClean() { + return (_fs || _load_fs()).exists( + path.join(this.config.lockfileFolder, (_constants || _load_constants()).CLEAN_FILENAME) + ); + } + + /** + * TODO + */ + + flatten(patterns) { + var _this9 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + if (!_this9.flags.flat) { + return patterns; + } + + const flattenedPatterns = []; + + for ( + var _iterator12 = _this9.resolver.getAllDependencyNamesByLevelOrder(patterns), + _isArray12 = Array.isArray(_iterator12), + _i12 = 0, + _iterator12 = _isArray12 ? _iterator12 : _iterator12[Symbol.iterator](); + ; + + ) { + var _ref25; + + if (_isArray12) { + if (_i12 >= _iterator12.length) break; + _ref25 = _iterator12[_i12++]; + } else { + _i12 = _iterator12.next(); + if (_i12.done) break; + _ref25 = _i12.value; + } + + const name = _ref25; + + const infos = _this9.resolver.getAllInfoForPackageName(name).filter(function (manifest) { + const ref = manifest._reference; + invariant(ref, 'expected package reference'); + return !ref.ignore; + }); + + if (infos.length === 0) { + continue; + } + + if (infos.length === 1) { + // single version of this package + // take out a single pattern as multiple patterns may have resolved to this package + flattenedPatterns.push(_this9.resolver.patternsByPackage[name][0]); + continue; + } + + const options = infos.map(function (info) { + const ref = info._reference; + invariant(ref, 'expected reference'); + return { + // TODO `and is required by {PARENT}`, + name: _this9.reporter.lang( + 'manualVersionResolutionOption', + ref.patterns.join(', '), + info.version + ), + + value: info.version, + }; + }); + const versions = infos.map(function (info) { + return info.version; + }); + let version; + + const resolutionVersion = _this9.resolutions[name]; + if (resolutionVersion && versions.indexOf(resolutionVersion) >= 0) { + // use json `resolution` version + version = resolutionVersion; + } else { + version = yield _this9.reporter.select( + _this9.reporter.lang('manualVersionResolution', name), + _this9.reporter.lang('answer'), + options + ); + _this9.resolutions[name] = version; + } + + flattenedPatterns.push(_this9.resolver.collapseAllVersionsOfPackage(name, version)); + } + + // save resolutions to their appropriate root manifest + if (Object.keys(_this9.resolutions).length) { + const manifests = yield _this9.config.getRootManifests(); + + for (const name in _this9.resolutions) { + const version = _this9.resolutions[name]; + + const patterns = _this9.resolver.patternsByPackage[name]; + if (!patterns) { + continue; + } + + let manifest; + for ( + var _iterator13 = patterns, + _isArray13 = Array.isArray(_iterator13), + _i13 = 0, + _iterator13 = _isArray13 ? _iterator13 : _iterator13[Symbol.iterator](); + ; + + ) { + var _ref26; + + if (_isArray13) { + if (_i13 >= _iterator13.length) break; + _ref26 = _iterator13[_i13++]; + } else { + _i13 = _iterator13.next(); + if (_i13.done) break; + _ref26 = _i13.value; + } + + const pattern = _ref26; + + manifest = _this9.resolver.getResolvedPattern(pattern); + if (manifest) { + break; + } + } + invariant(manifest, 'expected manifest'); + + const ref = manifest._reference; + invariant(ref, 'expected reference'); + + const object = manifests[ref.registry].object; + object.resolutions = object.resolutions || {}; + object.resolutions[name] = version; + } + + yield _this9.config.saveRootManifests(manifests); + } + + return flattenedPatterns; + })(); + } + + /** + * Remove offline tarballs that are no longer required + */ + + pruneOfflineMirror(lockfile) { + var _this10 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + const mirror = _this10.config.getOfflineMirrorPath(); + if (!mirror) { + return; + } + + const requiredTarballs = new Set(); + for (const dependency in lockfile) { + const resolved = lockfile[dependency].resolved; + if (resolved) { + const basename = path.basename(resolved.split('#')[0]); + if (dependency[0] === '@' && basename[0] !== '@') { + requiredTarballs.add(`${dependency.split('/')[0]}-${basename}`); + } + requiredTarballs.add(basename); + } + } + + const mirrorFiles = yield (_fs || _load_fs()).walk(mirror); + for ( + var _iterator14 = mirrorFiles, + _isArray14 = Array.isArray(_iterator14), + _i14 = 0, + _iterator14 = _isArray14 ? _iterator14 : _iterator14[Symbol.iterator](); + ; + + ) { + var _ref27; + + if (_isArray14) { + if (_i14 >= _iterator14.length) break; + _ref27 = _iterator14[_i14++]; + } else { + _i14 = _iterator14.next(); + if (_i14.done) break; + _ref27 = _i14.value; + } + + const file = _ref27; + + const isTarball = path.extname(file.basename) === '.tgz'; + // if using experimental-pack-script-packages-in-mirror flag, don't unlink prebuilt packages + const hasPrebuiltPackage = file.relative.startsWith('prebuilt/'); + if (isTarball && !hasPrebuiltPackage && !requiredTarballs.has(file.basename)) { + yield (_fs || _load_fs()).unlink(file.absolute); + } + } + })(); + } + + /** + * Save updated integrity and lockfiles. + */ + + saveLockfileAndIntegrity(patterns, workspaceLayout) { + var _this11 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + const resolvedPatterns = {}; + Object.keys(_this11.resolver.patterns).forEach(function (pattern) { + if (!workspaceLayout || !workspaceLayout.getManifestByPattern(pattern)) { + resolvedPatterns[pattern] = _this11.resolver.patterns[pattern]; + } + }); + + // TODO this code is duplicated in a few places, need a common way to filter out workspace patterns from lockfile + patterns = patterns.filter(function (p) { + return !workspaceLayout || !workspaceLayout.getManifestByPattern(p); + }); + + const lockfileBasedOnResolver = _this11.lockfile.getLockfile(resolvedPatterns); + + if (_this11.config.pruneOfflineMirror) { + yield _this11.pruneOfflineMirror(lockfileBasedOnResolver); + } + + // write integrity hash + if (!_this11.config.plugnplayEnabled) { + yield _this11.integrityChecker.save( + patterns, + lockfileBasedOnResolver, + _this11.flags, + workspaceLayout, + _this11.scripts.getArtifacts() + ); + } + + // --no-lockfile or --pure-lockfile or --frozen-lockfile + if ( + _this11.flags.lockfile === false || + _this11.flags.pureLockfile || + _this11.flags.frozenLockfile + ) { + return; + } + + const lockFileHasAllPatterns = patterns.every(function (p) { + return _this11.lockfile.getLocked(p); + }); + const lockfilePatternsMatch = Object.keys(_this11.lockfile.cache || {}).every(function (p) { + return lockfileBasedOnResolver[p]; + }); + const resolverPatternsAreSameAsInLockfile = Object.keys(lockfileBasedOnResolver).every(function ( + pattern + ) { + const manifest = _this11.lockfile.getLocked(pattern); + return ( + manifest && + manifest.resolved === lockfileBasedOnResolver[pattern].resolved && + deepEqual(manifest.prebuiltVariants, lockfileBasedOnResolver[pattern].prebuiltVariants) + ); + }); + const integrityPatternsAreSameAsInLockfile = Object.keys(lockfileBasedOnResolver).every(function ( + pattern + ) { + const existingIntegrityInfo = lockfileBasedOnResolver[pattern].integrity; + if (!existingIntegrityInfo) { + // if this entry does not have an integrity, no need to re-write the lockfile because of it + return true; + } + const manifest = _this11.lockfile.getLocked(pattern); + if (manifest && manifest.integrity) { + const manifestIntegrity = ssri.stringify(manifest.integrity); + return manifestIntegrity === existingIntegrityInfo; + } + return false; + }); + + // remove command is followed by install with force, lockfile will be rewritten in any case then + if ( + !_this11.flags.force && + _this11.lockfile.parseResultType === 'success' && + lockFileHasAllPatterns && + lockfilePatternsMatch && + resolverPatternsAreSameAsInLockfile && + integrityPatternsAreSameAsInLockfile && + patterns.length + ) { + return; + } + + // build lockfile location + const loc = path.join( + _this11.config.lockfileFolder, + (_constants || _load_constants()).LOCKFILE_FILENAME + ); + + // write lockfile + const lockSource = (0, (_lockfile2 || _load_lockfile2()).stringify)( + lockfileBasedOnResolver, + false, + _this11.config.enableLockfileVersions + ); + yield (_fs || _load_fs()).writeFilePreservingEol(loc, lockSource); + + _this11._logSuccessSaveLockfile(); + })(); + } + + _logSuccessSaveLockfile() { + this.reporter.success(this.reporter.lang('savedLockfile')); + } + + /** + * Load the dependency graph of the current install. Only does package resolving and wont write to the cwd. + */ + hydrate(ignoreUnusedPatterns) { + var _this12 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + const request = yield _this12.fetchRequestFromCwd([], ignoreUnusedPatterns); + const depRequests = request.requests, + rawPatterns = request.patterns, + ignorePatterns = request.ignorePatterns, + workspaceLayout = request.workspaceLayout; + + yield _this12.resolver.init(depRequests, { + isFlat: _this12.flags.flat, + isFrozen: _this12.flags.frozenLockfile, + workspaceLayout, + }); + yield _this12.flatten(rawPatterns); + _this12.markIgnored(ignorePatterns); + + // fetch packages, should hit cache most of the time + const manifests = yield (_packageFetcher || _load_packageFetcher()).fetch( + _this12.resolver.getManifests(), + _this12.config + ); + _this12.resolver.updateManifests(manifests); + yield (_packageCompatibility || _load_packageCompatibility()).check( + _this12.resolver.getManifests(), + _this12.config, + _this12.flags.ignoreEngines + ); + + // expand minimal manifests + for ( + var _iterator15 = _this12.resolver.getManifests(), + _isArray15 = Array.isArray(_iterator15), + _i15 = 0, + _iterator15 = _isArray15 ? _iterator15 : _iterator15[Symbol.iterator](); + ; + + ) { + var _ref28; + + if (_isArray15) { + if (_i15 >= _iterator15.length) break; + _ref28 = _iterator15[_i15++]; + } else { + _i15 = _iterator15.next(); + if (_i15.done) break; + _ref28 = _i15.value; + } + + const manifest = _ref28; + + const ref = manifest._reference; + invariant(ref, 'expected reference'); + const type = ref.remote.type; + // link specifier won't ever hit cache + + let loc = ''; + if (type === 'link') { + continue; + } else if (type === 'workspace') { + if (!ref.remote.reference) { + continue; + } + loc = ref.remote.reference; + } else { + loc = _this12.config.generateModuleCachePath(ref); + } + const newPkg = yield _this12.config.readManifest(loc); + yield _this12.resolver.updateManifest(ref, newPkg); + } + + return request; + })(); + } + + /** + * Check for updates every day and output a nag message if there's a newer version. + */ + + checkUpdate() { + if (this.config.nonInteractive) { + // don't show upgrade dialog on CI or non-TTY terminals + return; + } + + // don't check if disabled + if (this.config.getOption('disable-self-update-check')) { + return; + } + + // only check for updates once a day + const lastUpdateCheck = Number(this.config.getOption('lastUpdateCheck')) || 0; + if (lastUpdateCheck && Date.now() - lastUpdateCheck < ONE_DAY) { + return; + } + + // don't bug for updates on tagged releases + if ((_yarnVersion || _load_yarnVersion()).version.indexOf('-') >= 0) { + return; + } + + this._checkUpdate().catch(() => { + // swallow errors + }); + } + + _checkUpdate() { + var _this13 = this; + + return (0, (_asyncToGenerator2 || _load_asyncToGenerator()).default)(function* () { + let latestVersion = yield _this13.config.requestManager.request({ + url: (_constants || _load_constants()).SELF_UPDATE_VERSION_URL, + }); + invariant(typeof latestVersion === 'string', 'expected string'); + latestVersion = latestVersion.trim(); + if (!semver.valid(latestVersion)) { + return; + } + + // ensure we only check for updates periodically + _this13.config.registries.yarn.saveHomeConfig({ + lastUpdateCheck: Date.now(), + }); + + if (semver.gt(latestVersion, (_yarnVersion || _load_yarnVersion()).version)) { + const installationMethod = yield (0, + (_yarnVersion || _load_yarnVersion()).getInstallationMethod)(); + _this13.maybeOutputUpdate = function () { + _this13.reporter.warn( + _this13.reporter.lang( + 'yarnOutdated', + latestVersion, + (_yarnVersion || _load_yarnVersion()).version + ) + ); + + const command = getUpdateCommand(installationMethod); + if (command) { + _this13.reporter.info(_this13.reporter.lang('yarnOutdatedCommand')); + _this13.reporter.command(command); + } else { + const installer = getUpdateInstaller(installationMethod); + if (installer) { + _this13.reporter.info(_this13.reporter.lang('yarnOutdatedInstaller', installer)); + } + } + }; + } + })(); + } + + /** + * Method to override with a possible upgrade message. + */ + + maybeOutputUpdate() {} + } + + exports.Install = Install; + function hasWrapper(commander, args) { + return true; + } + + function setFlags(commander) { + commander.description('Yarn install is used to install all dependencies for a project.'); + commander.usage('install [flags]'); + commander.option('-A, --audit', 'Run vulnerability audit on installed packages'); + commander.option('-g, --global', 'DEPRECATED'); + commander.option('-S, --save', 'DEPRECATED - save package to your `dependencies`'); + commander.option('-D, --save-dev', 'DEPRECATED - save package to your `devDependencies`'); + commander.option('-P, --save-peer', 'DEPRECATED - save package to your `peerDependencies`'); + commander.option('-O, --save-optional', 'DEPRECATED - save package to your `optionalDependencies`'); + commander.option('-E, --save-exact', 'DEPRECATED'); + commander.option('-T, --save-tilde', 'DEPRECATED'); + } + + /***/ + }, + /* 35 */ + /***/ function (module, exports, __webpack_require__) { + var isObject = __webpack_require__(53); + module.exports = function (it) { + if (!isObject(it)) throw TypeError(it + ' is not an object!'); + return it; + }; + + /***/ + }, + /* 36 */ + /***/ function (module, __webpack_exports__, __webpack_require__) { + 'use strict'; + /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, 'b', function () { + return SubjectSubscriber; + }); + /* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, 'a', function () { + return Subject; + }); + /* unused harmony export AnonymousSubject */ + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_0_tslib__ = __webpack_require__(1); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_1__Observable__ = __webpack_require__(12); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__Subscriber__ = __webpack_require__(7); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_3__Subscription__ = __webpack_require__(25); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_4__util_ObjectUnsubscribedError__ = + __webpack_require__(190); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_5__SubjectSubscription__ = __webpack_require__(422); + /* harmony import */ var __WEBPACK_IMPORTED_MODULE_6__internal_symbol_rxSubscriber__ = + __webpack_require__(321); + /** PURE_IMPORTS_START tslib,_Observable,_Subscriber,_Subscription,_util_ObjectUnsubscribedError,_SubjectSubscription,_internal_symbol_rxSubscriber PURE_IMPORTS_END */ + + var SubjectSubscriber = /*@__PURE__*/ (function (_super) { + __WEBPACK_IMPORTED_MODULE_0_tslib__['a' /* __extends */](SubjectSubscriber, _super); + function SubjectSubscriber(destination) { + var _this = _super.call(this, destination) || this; + _this.destination = destination; + return _this; + } + return SubjectSubscriber; + })(__WEBPACK_IMPORTED_MODULE_2__Subscriber__['a' /* Subscriber */]); + + var Subject = /*@__PURE__*/ (function (_super) { + __WEBPACK_IMPORTED_MODULE_0_tslib__['a' /* __extends */](Subject, _super); + function Subject() { + var _this = _super.call(this) || this; + _this.observers = []; + _this.closed = false; + _this.isStopped = false; + _this.hasError = false; + _this.thrownError = null; + return _this; + } + Subject.prototype[ + __WEBPACK_IMPORTED_MODULE_6__internal_symbol_rxSubscriber__['a' /* rxSubscriber */] + ] = function () { + return new SubjectSubscriber(this); + }; + Subject.prototype.lift = function (operator) { + var subject = new AnonymousSubject(this, this); + subject.operator = operator; + return subject; + }; + Subject.prototype.next = function (value) { + if (this.closed) { + throw new __WEBPACK_IMPORTED_MODULE_4__util_ObjectUnsubscribedError__[ + 'a' /* ObjectUnsubscribedError */ + ](); + } + if (!this.isStopped) { + var observers = this.observers; + var len = observers.length; + var copy = observers.slice(); + for (var i = 0; i < len; i++) { + copy[i].next(value); + } + } + }; + Subject.prototype.error = function (err) { + if (this.closed) { + throw new __WEBPACK_IMPORTED_MODULE_4__util_ObjectUnsubscribedError__[ + 'a' /* ObjectUnsubscribedError */ + ](); + } + this.hasError = true; + this.thrownError = err; + this.isStopped = true; + var observers = this.observers; + var len = observers.length; + var copy = observers.slice(); + for (var i = 0; i < len; i++) { + copy[i].error(err); + } + this.observers.length = 0; + }; + Subject.prototype.complete = function () { + if (this.closed) { + throw new __WEBPACK_IMPORTED_MODULE_4__util_ObjectUnsubscribedError__[ + 'a' /* ObjectUnsubscribedError */ + ](); + } + this.isStopped = true; + var observers = this.observers; + var len = observers.length; + var copy = observers.slice(); + for (var i = 0; i < len; i++) { + copy[i].complete(); + } + this.observers.length = 0; + }; + Subject.prototype.unsubscribe = function () { + this.isStopped = true; + this.closed = true; + this.observers = null; + }; + Subject.prototype._trySubscribe = function (subscriber) { + if (this.closed) { + throw new __WEBPACK_IMPORTED_MODULE_4__util_ObjectUnsubscribedError__[ + 'a' /* ObjectUnsubscribedError */ + ](); + } else { + return _super.prototype._trySubscribe.call(this, subscriber); + } + }; + Subject.prototype._subscribe = function (subscriber) { + if (this.closed) { + throw new __WEBPACK_IMPORTED_MODULE_4__util_ObjectUnsubscribedError__[ + 'a' /* ObjectUnsubscribedError */ + ](); + } else if (this.hasError) { + subscriber.error(this.thrownError); + return __WEBPACK_IMPORTED_MODULE_3__Subscription__['a' /* Subscription */].EMPTY; + } else if (this.isStopped) { + subscriber.complete(); + return __WEBPACK_IMPORTED_MODULE_3__Subscription__['a' /* Subscription */].EMPTY; + } else { + this.observers.push(subscriber); + return new __WEBPACK_IMPORTED_MODULE_5__SubjectSubscription__['a' /* SubjectSubscription */]( + this, + subscriber + ); + } + }; + Subject.prototype.asObservable = function () { + var observable = new __WEBPACK_IMPORTED_MODULE_1__Observable__['a' /* Observable */](); + observable.source = this; + return observable; + }; + Subject.create = function (destination, source) { + return new AnonymousSubject(destination, source); + }; + return Subject; + })(__WEBPACK_IMPORTED_MODULE_1__Observable__['a' /* Observable */]); + + var AnonymousSubject = /*@__PURE__*/ (function (_super) { + __WEBPACK_IMPORTED_MODULE_0_tslib__['a' /* __extends */](AnonymousSubject, _super); + function AnonymousSubject(destination, source) { + var _this = _super.call(this) || this; + _this.destination = destination; + _this.source = source; + return _this; + } + AnonymousSubject.prototype.next = function (value) { + var destination = this.destination; + if (destination && destination.next) { + destination.next(value); + } + }; + AnonymousSubject.prototype.error = function (err) { + var destination = this.destination; + if (destination && destination.error) { + this.destination.error(err); + } + }; + AnonymousSubject.prototype.complete = function () { + var destination = this.destination; + if (destination && destination.complete) { + this.destination.complete(); + } + }; + AnonymousSubject.prototype._subscribe = function (subscriber) { + var source = this.source; + if (source) { + return this.source.subscribe(subscriber); + } else { + return __WEBPACK_IMPORTED_MODULE_3__Subscription__['a' /* Subscription */].EMPTY; + } + }; + return AnonymousSubject; + })(Subject); + + //# sourceMappingURL=Subject.js.map + + /***/ + }, + /* 37 */ + /***/ function (module, exports, __webpack_require__) { + 'use strict'; + + Object.defineProperty(exports, '__esModule', { + value: true, + }); + exports.normalizePattern = normalizePattern; + + /** + * Explode and normalize a pattern into its name and range. + */ + + function normalizePattern(pattern) { + let hasVersion = false; + let range = 'latest'; + let name = pattern; + + // if we're a scope then remove the @ and add it back later + let isScoped = false; + if (name[0] === '@') { + isScoped = true; + name = name.slice(1); + } + + // take first part as the name + const parts = name.split('@'); + if (parts.length > 1) { + name = parts.shift(); + range = parts.join('@'); + + if (range) { + hasVersion = true; + } else { + range = '*'; + } + } + + // add back @ scope suffix + if (isScoped) { + name = `@${name}`; + } + + return { name, range, hasVersion }; + } + + /***/ + }, + /* 38 */ + /***/ function (module, exports, __webpack_require__) { + /* WEBPACK VAR INJECTION */ (function (module) { + var __WEBPACK_AMD_DEFINE_RESULT__; + /** + * @license + * Lodash + * Copyright JS Foundation and other contributors + * Released under MIT license + * Based on Underscore.js 1.8.3 + * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors + */ + (function () { + /** Used as a safe reference for `undefined` in pre-ES5 environments. */ + var undefined; + + /** Used as the semantic version number. */ + var VERSION = '4.17.10'; + + /** Used as the size to enable large array optimizations. */ + var LARGE_ARRAY_SIZE = 200; + + /** Error message constants. */ + var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.', + FUNC_ERROR_TEXT = 'Expected a function'; + + /** Used to stand-in for `undefined` hash values. */ + var HASH_UNDEFINED = '__lodash_hash_undefined__'; + + /** Used as the maximum memoize cache size. */ + var MAX_MEMOIZE_SIZE = 500; + + /** Used as the internal argument placeholder. */ + var PLACEHOLDER = '__lodash_placeholder__'; + + /** Used to compose bitmasks for cloning. */ + var CLONE_DEEP_FLAG = 1, + CLONE_FLAT_FLAG = 2, + CLONE_SYMBOLS_FLAG = 4; + + /** Used to compose bitmasks for value comparisons. */ + var COMPARE_PARTIAL_FLAG = 1, + COMPARE_UNORDERED_FLAG = 2; + + /** Used to compose bitmasks for function metadata. */ + var WRAP_BIND_FLAG = 1, + WRAP_BIND_KEY_FLAG = 2, + WRAP_CURRY_BOUND_FLAG = 4, + WRAP_CURRY_FLAG = 8, + WRAP_CURRY_RIGHT_FLAG = 16, + WRAP_PARTIAL_FLAG = 32, + WRAP_PARTIAL_RIGHT_FLAG = 64, + WRAP_ARY_FLAG = 128, + WRAP_REARG_FLAG = 256, + WRAP_FLIP_FLAG = 512; + + /** Used as default options for `_.truncate`. */ + var DEFAULT_TRUNC_LENGTH = 30, + DEFAULT_TRUNC_OMISSION = '...'; + + /** Used to detect hot functions by number of calls within a span of milliseconds. */ + var HOT_COUNT = 800, + HOT_SPAN = 16; + + /** Used to indicate the type of lazy iteratees. */ + var LAZY_FILTER_FLAG = 1, + LAZY_MAP_FLAG = 2, + LAZY_WHILE_FLAG = 3; + + /** Used as references for various `Number` constants. */ + var INFINITY = 1 / 0, + MAX_SAFE_INTEGER = 9007199254740991, + MAX_INTEGER = 1.7976931348623157e308, + NAN = 0 / 0; + + /** Used as references for the maximum length and index of an array. */ + var MAX_ARRAY_LENGTH = 4294967295, + MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1, + HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1; + + /** Used to associate wrap methods with their bit flags. */ + var wrapFlags = [ + ['ary', WRAP_ARY_FLAG], + ['bind', WRAP_BIND_FLAG], + ['bindKey', WRAP_BIND_KEY_FLAG], + ['curry', WRAP_CURRY_FLAG], + ['curryRight', WRAP_CURRY_RIGHT_FLAG], + ['flip', WRAP_FLIP_FLAG], + ['partial', WRAP_PARTIAL_FLAG], + ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], + ['rearg', WRAP_REARG_FLAG], + ]; + + /** `Object#toString` result references. */ + var argsTag = '[object Arguments]', + arrayTag = '[object Array]', + asyncTag = '[object AsyncFunction]', + boolTag = '[object Boolean]', + dateTag = '[object Date]', + domExcTag = '[object DOMException]', + errorTag = '[object Error]', + funcTag = '[object Function]', + genTag = '[object GeneratorFunction]', + mapTag = '[object Map]', + numberTag = '[object Number]', + nullTag = '[object Null]', + objectTag = '[object Object]', + promiseTag = '[object Promise]', + proxyTag = '[object Proxy]', + regexpTag = '[object RegExp]', + setTag = '[object Set]', + stringTag = '[object String]', + symbolTag = '[object Symbol]', + undefinedTag = '[object Undefined]', + weakMapTag = '[object WeakMap]', + weakSetTag = '[object WeakSet]'; + + var arrayBufferTag = '[object ArrayBuffer]', + dataViewTag = '[object DataView]', + float32Tag = '[object Float32Array]', + float64Tag = '[object Float64Array]', + int8Tag = '[object Int8Array]', + int16Tag = '[object Int16Array]', + int32Tag = '[object Int32Array]', + uint8Tag = '[object Uint8Array]', + uint8ClampedTag = '[object Uint8ClampedArray]', + uint16Tag = '[object Uint16Array]', + uint32Tag = '[object Uint32Array]'; + + /** Used to match empty string literals in compiled template source. */ + var reEmptyStringLeading = /\b__p \+= '';/g, + reEmptyStringMiddle = /\b(__p \+=) '' \+/g, + reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; + + /** Used to match HTML entities and HTML characters. */ + var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g, + reUnescapedHtml = /[&<>"']/g, + reHasEscapedHtml = RegExp(reEscapedHtml.source), + reHasUnescapedHtml = RegExp(reUnescapedHtml.source); + + /** Used to match template delimiters. */ + var reEscape = /<%-([\s\S]+?)%>/g, + reEvaluate = /<%([\s\S]+?)%>/g, + reInterpolate = /<%=([\s\S]+?)%>/g; + + /** Used to match property names within property paths. */ + var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, + reIsPlainProp = /^\w*$/, + rePropName = + /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g; + + /** + * Used to match `RegExp` + * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns). + */ + var reRegExpChar = /[\\^$.*+?()[\]{}|]/g, + reHasRegExpChar = RegExp(reRegExpChar.source); + + /** Used to match leading and trailing whitespace. */ + var reTrim = /^\s+|\s+$/g, + reTrimStart = /^\s+/, + reTrimEnd = /\s+$/; + + /** Used to match wrap detail comments. */ + var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/, + reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/, + reSplitDetails = /,? & /; + + /** Used to match words composed of alphanumeric characters. */ + var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g; + + /** Used to match backslashes in property paths. */ + var reEscapeChar = /\\(\\)?/g; + + /** + * Used to match + * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components). + */ + var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; + + /** Used to match `RegExp` flags from their coerced string values. */ + var reFlags = /\w*$/; + + /** Used to detect bad signed hexadecimal string values. */ + var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; + + /** Used to detect binary string values. */ + var reIsBinary = /^0b[01]+$/i; + + /** Used to detect host constructors (Safari). */ + var reIsHostCtor = /^\[object .+?Constructor\]$/; + + /** Used to detect octal string values. */ + var reIsOctal = /^0o[0-7]+$/i; + + /** Used to detect unsigned integer values. */ + var reIsUint = /^(?:0|[1-9]\d*)$/; + + /** Used to match Latin Unicode letters (excluding mathematical operators). */ + var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g; + + /** Used to ensure capturing order of template delimiters. */ + var reNoMatch = /($^)/; + + /** Used to match unescaped characters in compiled string literals. */ + var reUnescapedString = /['\n\r\u2028\u2029\\]/g; + + /** Used to compose unicode character classes. */ + var rsAstralRange = '\\ud800-\\udfff', + rsComboMarksRange = '\\u0300-\\u036f', + reComboHalfMarksRange = '\\ufe20-\\ufe2f', + rsComboSymbolsRange = '\\u20d0-\\u20ff', + rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange, + rsDingbatRange = '\\u2700-\\u27bf', + rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff', + rsMathOpRange = '\\xac\\xb1\\xd7\\xf7', + rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf', + rsPunctuationRange = '\\u2000-\\u206f', + rsSpaceRange = + ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000', + rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde', + rsVarRange = '\\ufe0e\\ufe0f', + rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange; + + /** Used to compose unicode capture groups. */ + var rsApos = "['\u2019]", + rsAstral = '[' + rsAstralRange + ']', + rsBreak = '[' + rsBreakRange + ']', + rsCombo = '[' + rsComboRange + ']', + rsDigits = '\\d+', + rsDingbat = '[' + rsDingbatRange + ']', + rsLower = '[' + rsLowerRange + ']', + rsMisc = + '[^' + + rsAstralRange + + rsBreakRange + + rsDigits + + rsDingbatRange + + rsLowerRange + + rsUpperRange + + ']', + rsFitz = '\\ud83c[\\udffb-\\udfff]', + rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')', + rsNonAstral = '[^' + rsAstralRange + ']', + rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}', + rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]', + rsUpper = '[' + rsUpperRange + ']', + rsZWJ = '\\u200d'; + + /** Used to compose unicode regexes. */ + var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')', + rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')', + rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?', + rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?', + reOptMod = rsModifier + '?', + rsOptVar = '[' + rsVarRange + ']?', + rsOptJoin = + '(?:' + + rsZWJ + + '(?:' + + [rsNonAstral, rsRegional, rsSurrPair].join('|') + + ')' + + rsOptVar + + reOptMod + + ')*', + rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])', + rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])', + rsSeq = rsOptVar + reOptMod + rsOptJoin, + rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq, + rsSymbol = + '(?:' + + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + + ')'; + + /** Used to match apostrophes. */ + var reApos = RegExp(rsApos, 'g'); + + /** + * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and + * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols). + */ + var reComboMark = RegExp(rsCombo, 'g'); + + /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */ + var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g'); + + /** Used to match complex or compound words. */ + var reUnicodeWord = RegExp( + [ + rsUpper + + '?' + + rsLower + + '+' + + rsOptContrLower + + '(?=' + + [rsBreak, rsUpper, '$'].join('|') + + ')', + rsMiscUpper + + '+' + + rsOptContrUpper + + '(?=' + + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + + ')', + rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, + rsUpper + '+' + rsOptContrUpper, + rsOrdUpper, + rsOrdLower, + rsDigits, + rsEmoji, + ].join('|'), + 'g' + ); + + /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */ + var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']'); + + /** Used to detect strings that need a more robust regexp to match words. */ + var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2,}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/; + + /** Used to assign default `context` object properties. */ + var contextProps = [ + 'Array', + 'Buffer', + 'DataView', + 'Date', + 'Error', + 'Float32Array', + 'Float64Array', + 'Function', + 'Int8Array', + 'Int16Array', + 'Int32Array', + 'Map', + 'Math', + 'Object', + 'Promise', + 'RegExp', + 'Set', + 'String', + 'Symbol', + 'TypeError', + 'Uint8Array', + 'Uint8ClampedArray', + 'Uint16Array', + 'Uint32Array', + 'WeakMap', + '_', + 'clearTimeout', + 'isFinite', + 'parseInt', + 'setTimeout', + ]; + + /** Used to make template sourceURLs easier to identify. */ + var templateCounter = -1; + + /** Used to identify `toStringTag` values of typed arrays. */ + var typedArrayTags = {}; + typedArrayTags[float32Tag] = + typedArrayTags[float64Tag] = + typedArrayTags[int8Tag] = + typedArrayTags[int16Tag] = + typedArrayTags[int32Tag] = + typedArrayTags[uint8Tag] = + typedArrayTags[uint8ClampedTag] = + typedArrayTags[uint16Tag] = + typedArrayTags[uint32Tag] = + true; + typedArrayTags[argsTag] = + typedArrayTags[arrayTag] = + typedArrayTags[arrayBufferTag] = + typedArrayTags[boolTag] = + typedArrayTags[dataViewTag] = + typedArrayTags[dateTag] = + typedArrayTags[errorTag] = + typedArrayTags[funcTag] = + typedArrayTags[mapTag] = + typedArrayTags[numberTag] = + typedArrayTags[objectTag] = + typedArrayTags[regexpTag] = + typedArrayTags[setTag] = + typedArrayTags[stringTag] = + typedArrayTags[weakMapTag] = + false; + + /** Used to identify `toStringTag` values supported by `_.clone`. */ + var cloneableTags = {}; + cloneableTags[argsTag] = + cloneableTags[arrayTag] = + cloneableTags[arrayBufferTag] = + cloneableTags[dataViewTag] = + cloneableTags[boolTag] = + cloneableTags[dateTag] = + cloneableTags[float32Tag] = + cloneableTags[float64Tag] = + cloneableTags[int8Tag] = + cloneableTags[int16Tag] = + cloneableTags[int32Tag] = + cloneableTags[mapTag] = + cloneableTags[numberTag] = + cloneableTags[objectTag] = + cloneableTags[regexpTag] = + cloneableTags[setTag] = + cloneableTags[stringTag] = + cloneableTags[symbolTag] = + cloneableTags[uint8Tag] = + cloneableTags[uint8ClampedTag] = + cloneableTags[uint16Tag] = + cloneableTags[uint32Tag] = + true; + cloneableTags[errorTag] = cloneableTags[funcTag] = cloneableTags[weakMapTag] = false; + + /** Used to map Latin Unicode letters to basic Latin letters. */ + var deburredLetters = { + // Latin-1 Supplement block. + '\xc0': 'A', + '\xc1': 'A', + '\xc2': 'A', + '\xc3': 'A', + '\xc4': 'A', + '\xc5': 'A', + '\xe0': 'a', + '\xe1': 'a', + '\xe2': 'a', + '\xe3': 'a', + '\xe4': 'a', + '\xe5': 'a', + '\xc7': 'C', + '\xe7': 'c', + '\xd0': 'D', + '\xf0': 'd', + '\xc8': 'E', + '\xc9': 'E', + '\xca': 'E', + '\xcb': 'E', + '\xe8': 'e', + '\xe9': 'e', + '\xea': 'e', + '\xeb': 'e', + '\xcc': 'I', + '\xcd': 'I', + '\xce': 'I', + '\xcf': 'I', + '\xec': 'i', + '\xed': 'i', + '\xee': 'i', + '\xef': 'i', + '\xd1': 'N', + '\xf1': 'n', + '\xd2': 'O', + '\xd3': 'O', + '\xd4': 'O', + '\xd5': 'O', + '\xd6': 'O', + '\xd8': 'O', + '\xf2': 'o', + '\xf3': 'o', + '\xf4': 'o', + '\xf5': 'o', + '\xf6': 'o', + '\xf8': 'o', + '\xd9': 'U', + '\xda': 'U', + '\xdb': 'U', + '\xdc': 'U', + '\xf9': 'u', + '\xfa': 'u', + '\xfb': 'u', + '\xfc': 'u', + '\xdd': 'Y', + '\xfd': 'y', + '\xff': 'y', + '\xc6': 'Ae', + '\xe6': 'ae', + '\xde': 'Th', + '\xfe': 'th', + '\xdf': 'ss', + // Latin Extended-A block. + '\u0100': 'A', + '\u0102': 'A', + '\u0104': 'A', + '\u0101': 'a', + '\u0103': 'a', + '\u0105': 'a', + '\u0106': 'C', + '\u0108': 'C', + '\u010a': 'C', + '\u010c': 'C', + '\u0107': 'c', + '\u0109': 'c', + '\u010b': 'c', + '\u010d': 'c', + '\u010e': 'D', + '\u0110': 'D', + '\u010f': 'd', + '\u0111': 'd', + '\u0112': 'E', + '\u0114': 'E', + '\u0116': 'E', + '\u0118': 'E', + '\u011a': 'E', + '\u0113': 'e', + '\u0115': 'e', + '\u0117': 'e', + '\u0119': 'e', + '\u011b': 'e', + '\u011c': 'G', + '\u011e': 'G', + '\u0120': 'G', + '\u0122': 'G', + '\u011d': 'g', + '\u011f': 'g', + '\u0121': 'g', + '\u0123': 'g', + '\u0124': 'H', + '\u0126': 'H', + '\u0125': 'h', + '\u0127': 'h', + '\u0128': 'I', + '\u012a': 'I', + '\u012c': 'I', + '\u012e': 'I', + '\u0130': 'I', + '\u0129': 'i', + '\u012b': 'i', + '\u012d': 'i', + '\u012f': 'i', + '\u0131': 'i', + '\u0134': 'J', + '\u0135': 'j', + '\u0136': 'K', + '\u0137': 'k', + '\u0138': 'k', + '\u0139': 'L', + '\u013b': 'L', + '\u013d': 'L', + '\u013f': 'L', + '\u0141': 'L', + '\u013a': 'l', + '\u013c': 'l', + '\u013e': 'l', + '\u0140': 'l', + '\u0142': 'l', + '\u0143': 'N', + '\u0145': 'N', + '\u0147': 'N', + '\u014a': 'N', + '\u0144': 'n', + '\u0146': 'n', + '\u0148': 'n', + '\u014b': 'n', + '\u014c': 'O', + '\u014e': 'O', + '\u0150': 'O', + '\u014d': 'o', + '\u014f': 'o', + '\u0151': 'o', + '\u0154': 'R', + '\u0156': 'R', + '\u0158': 'R', + '\u0155': 'r', + '\u0157': 'r', + '\u0159': 'r', + '\u015a': 'S', + '\u015c': 'S', + '\u015e': 'S', + '\u0160': 'S', + '\u015b': 's', + '\u015d': 's', + '\u015f': 's', + '\u0161': 's', + '\u0162': 'T', + '\u0164': 'T', + '\u0166': 'T', + '\u0163': 't', + '\u0165': 't', + '\u0167': 't', + '\u0168': 'U', + '\u016a': 'U', + '\u016c': 'U', + '\u016e': 'U', + '\u0170': 'U', + '\u0172': 'U', + '\u0169': 'u', + '\u016b': 'u', + '\u016d': 'u', + '\u016f': 'u', + '\u0171': 'u', + '\u0173': 'u', + '\u0174': 'W', + '\u0175': 'w', + '\u0176': 'Y', + '\u0177': 'y', + '\u0178': 'Y', + '\u0179': 'Z', + '\u017b': 'Z', + '\u017d': 'Z', + '\u017a': 'z', + '\u017c': 'z', + '\u017e': 'z', + '\u0132': 'IJ', + '\u0133': 'ij', + '\u0152': 'Oe', + '\u0153': 'oe', + '\u0149': "'n", + '\u017f': 's', + }; + + /** Used to map characters to HTML entities. */ + var htmlEscapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''', + }; + + /** Used to map HTML entities to characters. */ + var htmlUnescapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + ''': "'", + }; + + /** Used to escape characters for inclusion in compiled string literals. */ + var stringEscapes = { + '\\': '\\', + "'": "'", + '\n': 'n', + '\r': 'r', + '\u2028': 'u2028', + '\u2029': 'u2029', + }; + + /** Built-in method references without a dependency on `root`. */ + var freeParseFloat = parseFloat, + freeParseInt = parseInt; + + /** Detect free variable `global` from Node.js. */ + var freeGlobal = typeof global == 'object' && global && global.Object === Object && global; + + /** Detect free variable `self`. */ + var freeSelf = typeof self == 'object' && self && self.Object === Object && self; + + /** Used as a reference to the global object. */ + var root = freeGlobal || freeSelf || Function('return this')(); + + /** Detect free variable `exports`. */ + var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports; + + /** Detect free variable `module`. */ + var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module; + + /** Detect the popular CommonJS extension `module.exports`. */ + var moduleExports = freeModule && freeModule.exports === freeExports; + + /** Detect free variable `process` from Node.js. */ + var freeProcess = moduleExports && freeGlobal.process; + + /** Used to access faster Node.js helpers. */ + var nodeUtil = (function () { + try { + // Use `util.types` for Node.js 10+. + var types = freeModule && freeModule.require && freeModule.require('util').types; + + if (types) { + return types; + } + + // Legacy `process.binding('util')` for Node.js < 10. + return freeProcess && freeProcess.binding && freeProcess.binding('util'); + } catch (e) {} + })(); + + /* Node.js helper references. */ + var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer, + nodeIsDate = nodeUtil && nodeUtil.isDate, + nodeIsMap = nodeUtil && nodeUtil.isMap, + nodeIsRegExp = nodeUtil && nodeUtil.isRegExp, + nodeIsSet = nodeUtil && nodeUtil.isSet, + nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; + + /*--------------------------------------------------------------------------*/ + + /** + * A faster alternative to `Function#apply`, this function invokes `func` + * with the `this` binding of `thisArg` and the arguments of `args`. + * + * @private + * @param {Function} func The function to invoke. + * @param {*} thisArg The `this` binding of `func`. + * @param {Array} args The arguments to invoke `func` with. + * @returns {*} Returns the result of `func`. + */ + function apply(func, thisArg, args) { + switch (args.length) { + case 0: + return func.call(thisArg); + case 1: + return func.call(thisArg, args[0]); + case 2: + return func.call(thisArg, args[0], args[1]); + case 3: + return func.call(thisArg, args[0], args[1], args[2]); + } + return func.apply(thisArg, args); + } + + /** + * A specialized version of `baseAggregator` for arrays. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform keys. + * @param {Object} accumulator The initial aggregated object. + * @returns {Function} Returns `accumulator`. + */ + function arrayAggregator(array, setter, iteratee, accumulator) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + var value = array[index]; + setter(accumulator, value, iteratee(value), array); + } + return accumulator; + } + + /** + * A specialized version of `_.forEach` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEach(array, iteratee) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (iteratee(array[index], index, array) === false) { + break; + } + } + return array; + } + + /** + * A specialized version of `_.forEachRight` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEachRight(array, iteratee) { + var length = array == null ? 0 : array.length; + + while (length--) { + if (iteratee(array[length], length, array) === false) { + break; + } + } + return array; + } + + /** + * A specialized version of `_.every` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + */ + function arrayEvery(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (!predicate(array[index], index, array)) { + return false; + } + } + return true; + } + + /** + * A specialized version of `_.filter` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + */ + function arrayFilter(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (predicate(value, index, array)) { + result[resIndex++] = value; + } + } + return result; + } + + /** + * A specialized version of `_.includes` for arrays without support for + * specifying an index to search from. + * + * @private + * @param {Array} [array] The array to inspect. + * @param {*} target The value to search for. + * @returns {boolean} Returns `true` if `target` is found, else `false`. + */ + function arrayIncludes(array, value) { + var length = array == null ? 0 : array.length; + return !!length && baseIndexOf(array, value, 0) > -1; + } + + /** + * This function is like `arrayIncludes` except that it accepts a comparator. + * + * @private + * @param {Array} [array] The array to inspect. + * @param {*} target The value to search for. + * @param {Function} comparator The comparator invoked per element. + * @returns {boolean} Returns `true` if `target` is found, else `false`. + */ + function arrayIncludesWith(array, value, comparator) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (comparator(value, array[index])) { + return true; + } + } + return false; + } + + /** + * A specialized version of `_.map` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function arrayMap(array, iteratee) { + var index = -1, + length = array == null ? 0 : array.length, + result = Array(length); + + while (++index < length) { + result[index] = iteratee(array[index], index, array); + } + return result; + } + + /** + * Appends the elements of `values` to `array`. + * + * @private + * @param {Array} array The array to modify. + * @param {Array} values The values to append. + * @returns {Array} Returns `array`. + */ + function arrayPush(array, values) { + var index = -1, + length = values.length, + offset = array.length; + + while (++index < length) { + array[offset + index] = values[index]; + } + return array; + } + + /** + * A specialized version of `_.reduce` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the first element of `array` as + * the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduce(array, iteratee, accumulator, initAccum) { + var index = -1, + length = array == null ? 0 : array.length; + + if (initAccum && length) { + accumulator = array[++index]; + } + while (++index < length) { + accumulator = iteratee(accumulator, array[index], index, array); + } + return accumulator; + } + + /** + * A specialized version of `_.reduceRight` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the last element of `array` as + * the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduceRight(array, iteratee, accumulator, initAccum) { + var length = array == null ? 0 : array.length; + if (initAccum && length) { + accumulator = array[--length]; + } + while (length--) { + accumulator = iteratee(accumulator, array[length], length, array); + } + return accumulator; + } + + /** + * A specialized version of `_.some` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + */ + function arraySome(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (predicate(array[index], index, array)) { + return true; + } + } + return false; + } + + /** + * Gets the size of an ASCII `string`. + * + * @private + * @param {string} string The string inspect. + * @returns {number} Returns the string size. + */ + var asciiSize = baseProperty('length'); + + /** + * Converts an ASCII `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function asciiToArray(string) { + return string.split(''); + } + + /** + * Splits an ASCII `string` into an array of its words. + * + * @private + * @param {string} The string to inspect. + * @returns {Array} Returns the words of `string`. + */ + function asciiWords(string) { + return string.match(reAsciiWord) || []; + } + + /** + * The base implementation of methods like `_.findKey` and `_.findLastKey`, + * without support for iteratee shorthands, which iterates over `collection` + * using `eachFunc`. + * + * @private + * @param {Array|Object} collection The collection to inspect. + * @param {Function} predicate The function invoked per iteration. + * @param {Function} eachFunc The function to iterate over `collection`. + * @returns {*} Returns the found element or its key, else `undefined`. + */ + function baseFindKey(collection, predicate, eachFunc) { + var result; + eachFunc(collection, function (value, key, collection) { + if (predicate(value, key, collection)) { + result = key; + return false; + } + }); + return result; + } + + /** + * The base implementation of `_.findIndex` and `_.findLastIndex` without + * support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} predicate The function invoked per iteration. + * @param {number} fromIndex The index to search from. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseFindIndex(array, predicate, fromIndex, fromRight) { + var length = array.length, + index = fromIndex + (fromRight ? 1 : -1); + + while (fromRight ? index-- : ++index < length) { + if (predicate(array[index], index, array)) { + return index; + } + } + return -1; + } + + /** + * The base implementation of `_.indexOf` without `fromIndex` bounds checks. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOf(array, value, fromIndex) { + return value === value + ? strictIndexOf(array, value, fromIndex) + : baseFindIndex(array, baseIsNaN, fromIndex); + } + + /** + * This function is like `baseIndexOf` except that it accepts a comparator. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @param {Function} comparator The comparator invoked per element. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOfWith(array, value, fromIndex, comparator) { + var index = fromIndex - 1, + length = array.length; + + while (++index < length) { + if (comparator(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * The base implementation of `_.isNaN` without support for number objects. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. + */ + function baseIsNaN(value) { + return value !== value; + } + + /** + * The base implementation of `_.mean` and `_.meanBy` without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {number} Returns the mean. + */ + function baseMean(array, iteratee) { + var length = array == null ? 0 : array.length; + return length ? baseSum(array, iteratee) / length : NAN; + } + + /** + * The base implementation of `_.property` without support for deep paths. + * + * @private + * @param {string} key The key of the property to get. + * @returns {Function} Returns the new accessor function. + */ + function baseProperty(key) { + return function (object) { + return object == null ? undefined : object[key]; + }; + } + + /** + * The base implementation of `_.propertyOf` without support for deep paths. + * + * @private + * @param {Object} object The object to query. + * @returns {Function} Returns the new accessor function. + */ + function basePropertyOf(object) { + return function (key) { + return object == null ? undefined : object[key]; + }; + } + + /** + * The base implementation of `_.reduce` and `_.reduceRight`, without support + * for iteratee shorthands, which iterates over `collection` using `eachFunc`. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} accumulator The initial value. + * @param {boolean} initAccum Specify using the first or last element of + * `collection` as the initial value. + * @param {Function} eachFunc The function to iterate over `collection`. + * @returns {*} Returns the accumulated value. + */ + function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) { + eachFunc(collection, function (value, index, collection) { + accumulator = initAccum + ? ((initAccum = false), value) + : iteratee(accumulator, value, index, collection); + }); + return accumulator; + } + + /** + * The base implementation of `_.sortBy` which uses `comparer` to define the + * sort order of `array` and replaces criteria objects with their corresponding + * values. + * + * @private + * @param {Array} array The array to sort. + * @param {Function} comparer The function to define sort order. + * @returns {Array} Returns `array`. + */ + function baseSortBy(array, comparer) { + var length = array.length; + + array.sort(comparer); + while (length--) { + array[length] = array[length].value; + } + return array; + } + + /** + * The base implementation of `_.sum` and `_.sumBy` without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {number} Returns the sum. + */ + function baseSum(array, iteratee) { + var result, + index = -1, + length = array.length; + + while (++index < length) { + var current = iteratee(array[index]); + if (current !== undefined) { + result = result === undefined ? current : result + current; + } + } + return result; + } + + /** + * The base implementation of `_.times` without support for iteratee shorthands + * or max array length checks. + * + * @private + * @param {number} n The number of times to invoke `iteratee`. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the array of results. + */ + function baseTimes(n, iteratee) { + var index = -1, + result = Array(n); + + while (++index < n) { + result[index] = iteratee(index); + } + return result; + } + + /** + * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array + * of key-value pairs for `object` corresponding to the property names of `props`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} props The property names to get values for. + * @returns {Object} Returns the key-value pairs. + */ + function baseToPairs(object, props) { + return arrayMap(props, function (key) { + return [key, object[key]]; + }); + } + + /** + * The base implementation of `_.unary` without support for storing metadata. + * + * @private + * @param {Function} func The function to cap arguments for. + * @returns {Function} Returns the new capped function. + */ + function baseUnary(func) { + return function (value) { + return func(value); + }; + } + + /** + * The base implementation of `_.values` and `_.valuesIn` which creates an + * array of `object` property values corresponding to the property names + * of `props`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} props The property names to get values for. + * @returns {Object} Returns the array of property values. + */ + function baseValues(object, props) { + return arrayMap(props, function (key) { + return object[key]; + }); + } + + /** + * Checks if a `cache` value for `key` exists. + * + * @private + * @param {Object} cache The cache to query. + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function cacheHas(cache, key) { + return cache.has(key); + } + + /** + * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the first unmatched string symbol. + */ + function charsStartIndex(strSymbols, chrSymbols) { + var index = -1, + length = strSymbols.length; + + while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; + } + + /** + * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the last unmatched string symbol. + */ + function charsEndIndex(strSymbols, chrSymbols) { + var index = strSymbols.length; + + while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; + } + + /** + * Gets the number of `placeholder` occurrences in `array`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} placeholder The placeholder to search for. + * @returns {number} Returns the placeholder count. + */ + function countHolders(array, placeholder) { + var length = array.length, + result = 0; + + while (length--) { + if (array[length] === placeholder) { + ++result; + } + } + return result; + } + + /** + * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A + * letters to basic Latin letters. + * + * @private + * @param {string} letter The matched letter to deburr. + * @returns {string} Returns the deburred letter. + */ + var deburrLetter = basePropertyOf(deburredLetters); + + /** + * Used by `_.escape` to convert characters to HTML entities. + * + * @private + * @param {string} chr The matched character to escape. + * @returns {string} Returns the escaped character. + */ + var escapeHtmlChar = basePropertyOf(htmlEscapes); + + /** + * Used by `_.template` to escape characters for inclusion in compiled string literals. + * + * @private + * @param {string} chr The matched character to escape. + * @returns {string} Returns the escaped character. + */ + function escapeStringChar(chr) { + return '\\' + stringEscapes[chr]; + } + + /** + * Gets the value at `key` of `object`. + * + * @private + * @param {Object} [object] The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. + */ + function getValue(object, key) { + return object == null ? undefined : object[key]; + } + + /** + * Checks if `string` contains Unicode symbols. + * + * @private + * @param {string} string The string to inspect. + * @returns {boolean} Returns `true` if a symbol is found, else `false`. + */ + function hasUnicode(string) { + return reHasUnicode.test(string); + } + + /** + * Checks if `string` contains a word composed of Unicode symbols. + * + * @private + * @param {string} string The string to inspect. + * @returns {boolean} Returns `true` if a word is found, else `false`. + */ + function hasUnicodeWord(string) { + return reHasUnicodeWord.test(string); + } + + /** + * Converts `iterator` to an array. + * + * @private + * @param {Object} iterator The iterator to convert. + * @returns {Array} Returns the converted array. + */ + function iteratorToArray(iterator) { + var data, + result = []; + + while (!(data = iterator.next()).done) { + result.push(data.value); + } + return result; + } + + /** + * Converts `map` to its key-value pairs. + * + * @private + * @param {Object} map The map to convert. + * @returns {Array} Returns the key-value pairs. + */ + function mapToArray(map) { + var index = -1, + result = Array(map.size); + + map.forEach(function (value, key) { + result[++index] = [key, value]; + }); + return result; + } + + /** + * Creates a unary function that invokes `func` with its argument transformed. + * + * @private + * @param {Function} func The function to wrap. + * @param {Function} transform The argument transform. + * @returns {Function} Returns the new function. + */ + function overArg(func, transform) { + return function (arg) { + return func(transform(arg)); + }; + } + + /** + * Replaces all `placeholder` elements in `array` with an internal placeholder + * and returns an array of their indexes. + * + * @private + * @param {Array} array The array to modify. + * @param {*} placeholder The placeholder to replace. + * @returns {Array} Returns the new array of placeholder indexes. + */ + function replaceHolders(array, placeholder) { + var index = -1, + length = array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (value === placeholder || value === PLACEHOLDER) { + array[index] = PLACEHOLDER; + result[resIndex++] = index; + } + } + return result; + } + + /** + * Gets the value at `key`, unless `key` is "__proto__". + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. + */ + function safeGet(object, key) { + return key == '__proto__' ? undefined : object[key]; + } + + /** + * Converts `set` to an array of its values. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the values. + */ + function setToArray(set) { + var index = -1, + result = Array(set.size); + + set.forEach(function (value) { + result[++index] = value; + }); + return result; + } + + /** + * Converts `set` to its value-value pairs. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the value-value pairs. + */ + function setToPairs(set) { + var index = -1, + result = Array(set.size); + + set.forEach(function (value) { + result[++index] = [value, value]; + }); + return result; + } + + /** + * A specialized version of `_.indexOf` which performs strict equality + * comparisons of values, i.e. `===`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function strictIndexOf(array, value, fromIndex) { + var index = fromIndex - 1, + length = array.length; + + while (++index < length) { + if (array[index] === value) { + return index; + } + } + return -1; + } + + /** + * A specialized version of `_.lastIndexOf` which performs strict equality + * comparisons of values, i.e. `===`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function strictLastIndexOf(array, value, fromIndex) { + var index = fromIndex + 1; + while (index--) { + if (array[index] === value) { + return index; + } + } + return index; + } + + /** + * Gets the number of symbols in `string`. + * + * @private + * @param {string} string The string to inspect. + * @returns {number} Returns the string size. + */ + function stringSize(string) { + return hasUnicode(string) ? unicodeSize(string) : asciiSize(string); + } + + /** + * Converts `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function stringToArray(string) { + return hasUnicode(string) ? unicodeToArray(string) : asciiToArray(string); + } + + /** + * Used by `_.unescape` to convert HTML entities to characters. + * + * @private + * @param {string} chr The matched character to unescape. + * @returns {string} Returns the unescaped character. + */ + var unescapeHtmlChar = basePropertyOf(htmlUnescapes); + + /** + * Gets the size of a Unicode `string`. + * + * @private + * @param {string} string The string inspect. + * @returns {number} Returns the string size. + */ + function unicodeSize(string) { + var result = (reUnicode.lastIndex = 0); + while (reUnicode.test(string)) { + ++result; + } + return result; + } + + /** + * Converts a Unicode `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function unicodeToArray(string) { + return string.match(reUnicode) || []; + } + + /** + * Splits a Unicode `string` into an array of its words. + * + * @private + * @param {string} The string to inspect. + * @returns {Array} Returns the words of `string`. + */ + function unicodeWords(string) { + return string.match(reUnicodeWord) || []; + } + + /*--------------------------------------------------------------------------*/ + + /** + * Create a new pristine `lodash` function using the `context` object. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Util + * @param {Object} [context=root] The context object. + * @returns {Function} Returns a new `lodash` function. + * @example + * + * _.mixin({ 'foo': _.constant('foo') }); + * + * var lodash = _.runInContext(); + * lodash.mixin({ 'bar': lodash.constant('bar') }); + * + * _.isFunction(_.foo); + * // => true + * _.isFunction(_.bar); + * // => false + * + * lodash.isFunction(lodash.foo); + * // => false + * lodash.isFunction(lodash.bar); + * // => true + * + * // Create a suped-up `defer` in Node.js. + * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer; + */ + var runInContext = function runInContext(context) { + context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps)); + + /** Built-in constructor references. */ + var Array = context.Array, + Date = context.Date, + Error = context.Error, + Function = context.Function, + Math = context.Math, + Object = context.Object, + RegExp = context.RegExp, + String = context.String, + TypeError = context.TypeError; + + /** Used for built-in method references. */ + var arrayProto = Array.prototype, + funcProto = Function.prototype, + objectProto = Object.prototype; + + /** Used to detect overreaching core-js shims. */ + var coreJsData = context['__core-js_shared__']; + + /** Used to resolve the decompiled source of functions. */ + var funcToString = funcProto.toString; + + /** Used to check objects for own properties. */ + var hasOwnProperty = objectProto.hasOwnProperty; + + /** Used to generate unique IDs. */ + var idCounter = 0; + + /** Used to detect methods masquerading as native. */ + var maskSrcKey = (function () { + var uid = /[^.]+$/.exec((coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO) || ''); + return uid ? 'Symbol(src)_1.' + uid : ''; + })(); + + /** + * Used to resolve the + * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring) + * of values. + */ + var nativeObjectToString = objectProto.toString; + + /** Used to infer the `Object` constructor. */ + var objectCtorString = funcToString.call(Object); + + /** Used to restore the original `_` reference in `_.noConflict`. */ + var oldDash = root._; + + /** Used to detect if a method is native. */ + var reIsNative = RegExp( + '^' + + funcToString + .call(hasOwnProperty) + .replace(reRegExpChar, '\\$&') + .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + + '$' + ); + + /** Built-in value references. */ + var Buffer = moduleExports ? context.Buffer : undefined, + Symbol = context.Symbol, + Uint8Array = context.Uint8Array, + allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined, + getPrototype = overArg(Object.getPrototypeOf, Object), + objectCreate = Object.create, + propertyIsEnumerable = objectProto.propertyIsEnumerable, + splice = arrayProto.splice, + spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined, + symIterator = Symbol ? Symbol.iterator : undefined, + symToStringTag = Symbol ? Symbol.toStringTag : undefined; + + var defineProperty = (function () { + try { + var func = getNative(Object, 'defineProperty'); + func({}, '', {}); + return func; + } catch (e) {} + })(); + + /** Mocked built-ins. */ + var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout, + ctxNow = Date && Date.now !== root.Date.now && Date.now, + ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout; + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeCeil = Math.ceil, + nativeFloor = Math.floor, + nativeGetSymbols = Object.getOwnPropertySymbols, + nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined, + nativeIsFinite = context.isFinite, + nativeJoin = arrayProto.join, + nativeKeys = overArg(Object.keys, Object), + nativeMax = Math.max, + nativeMin = Math.min, + nativeNow = Date.now, + nativeParseInt = context.parseInt, + nativeRandom = Math.random, + nativeReverse = arrayProto.reverse; + + /* Built-in method references that are verified to be native. */ + var DataView = getNative(context, 'DataView'), + Map = getNative(context, 'Map'), + Promise = getNative(context, 'Promise'), + Set = getNative(context, 'Set'), + WeakMap = getNative(context, 'WeakMap'), + nativeCreate = getNative(Object, 'create'); + + /** Used to store function metadata. */ + var metaMap = WeakMap && new WeakMap(); + + /** Used to lookup unminified function names. */ + var realNames = {}; + + /** Used to detect maps, sets, and weakmaps. */ + var dataViewCtorString = toSource(DataView), + mapCtorString = toSource(Map), + promiseCtorString = toSource(Promise), + setCtorString = toSource(Set), + weakMapCtorString = toSource(WeakMap); + + /** Used to convert symbols to primitives and strings. */ + var symbolProto = Symbol ? Symbol.prototype : undefined, + symbolValueOf = symbolProto ? symbolProto.valueOf : undefined, + symbolToString = symbolProto ? symbolProto.toString : undefined; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a `lodash` object which wraps `value` to enable implicit method + * chain sequences. Methods that operate on and return arrays, collections, + * and functions can be chained together. Methods that retrieve a single value + * or may return a primitive value will automatically end the chain sequence + * and return the unwrapped value. Otherwise, the value must be unwrapped + * with `_#value`. + * + * Explicit chain sequences, which must be unwrapped with `_#value`, may be + * enabled using `_.chain`. + * + * The execution of chained methods is lazy, that is, it's deferred until + * `_#value` is implicitly or explicitly called. + * + * Lazy evaluation allows several methods to support shortcut fusion. + * Shortcut fusion is an optimization to merge iteratee calls; this avoids + * the creation of intermediate arrays and can greatly reduce the number of + * iteratee executions. Sections of a chain sequence qualify for shortcut + * fusion if the section is applied to an array and iteratees accept only + * one argument. The heuristic for whether a section qualifies for shortcut + * fusion is subject to change. + * + * Chaining is supported in custom builds as long as the `_#value` method is + * directly or indirectly included in the build. + * + * In addition to lodash methods, wrappers have `Array` and `String` methods. + * + * The wrapper `Array` methods are: + * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift` + * + * The wrapper `String` methods are: + * `replace` and `split` + * + * The wrapper methods that support shortcut fusion are: + * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`, + * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`, + * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray` + * + * The chainable wrapper methods are: + * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`, + * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`, + * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`, + * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`, + * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`, + * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`, + * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`, + * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`, + * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`, + * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`, + * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`, + * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`, + * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`, + * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`, + * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`, + * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`, + * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`, + * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`, + * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`, + * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`, + * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`, + * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`, + * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`, + * `zipObject`, `zipObjectDeep`, and `zipWith` + * + * The wrapper methods that are **not** chainable by default are: + * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`, + * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`, + * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`, + * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`, + * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`, + * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`, + * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`, + * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`, + * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`, + * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`, + * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`, + * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`, + * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`, + * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`, + * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`, + * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`, + * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`, + * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`, + * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`, + * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`, + * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`, + * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`, + * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`, + * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`, + * `upperFirst`, `value`, and `words` + * + * @name _ + * @constructor + * @category Seq + * @param {*} value The value to wrap in a `lodash` instance. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * function square(n) { + * return n * n; + * } + * + * var wrapped = _([1, 2, 3]); + * + * // Returns an unwrapped value. + * wrapped.reduce(_.add); + * // => 6 + * + * // Returns a wrapped value. + * var squares = wrapped.map(square); + * + * _.isArray(squares); + * // => false + * + * _.isArray(squares.value()); + * // => true + */ + function lodash(value) { + if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) { + if (value instanceof LodashWrapper) { + return value; + } + if (hasOwnProperty.call(value, '__wrapped__')) { + return wrapperClone(value); + } + } + return new LodashWrapper(value); + } + + /** + * The base implementation of `_.create` without support for assigning + * properties to the created object. + * + * @private + * @param {Object} proto The object to inherit from. + * @returns {Object} Returns the new object. + */ + var baseCreate = (function () { + function object() {} + return function (proto) { + if (!isObject(proto)) { + return {}; + } + if (objectCreate) { + return objectCreate(proto); + } + object.prototype = proto; + var result = new object(); + object.prototype = undefined; + return result; + }; + })(); + + /** + * The function whose prototype chain sequence wrappers inherit from. + * + * @private + */ + function baseLodash() { + // No operation performed. + } + + /** + * The base constructor for creating `lodash` wrapper objects. + * + * @private + * @param {*} value The value to wrap. + * @param {boolean} [chainAll] Enable explicit method chain sequences. + */ + function LodashWrapper(value, chainAll) { + this.__wrapped__ = value; + this.__actions__ = []; + this.__chain__ = !!chainAll; + this.__index__ = 0; + this.__values__ = undefined; + } + + /** + * By default, the template delimiters used by lodash are like those in + * embedded Ruby (ERB) as well as ES2015 template strings. Change the + * following template settings to use alternative delimiters. + * + * @static + * @memberOf _ + * @type {Object} + */ + lodash.templateSettings = { + /** + * Used to detect `data` property values to be HTML-escaped. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + escape: reEscape, + + /** + * Used to detect code to be evaluated. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + evaluate: reEvaluate, + + /** + * Used to detect `data` property values to inject. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + interpolate: reInterpolate, + + /** + * Used to reference the data object in the template text. + * + * @memberOf _.templateSettings + * @type {string} + */ + variable: '', + + /** + * Used to import variables into the compiled template. + * + * @memberOf _.templateSettings + * @type {Object} + */ + imports: { + /** + * A reference to the `lodash` function. + * + * @memberOf _.templateSettings.imports + * @type {Function} + */ + _: lodash, + }, + }; + + // Ensure wrappers are instances of `baseLodash`. + lodash.prototype = baseLodash.prototype; + lodash.prototype.constructor = lodash; + + LodashWrapper.prototype = baseCreate(baseLodash.prototype); + LodashWrapper.prototype.constructor = LodashWrapper; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation. + * + * @private + * @constructor + * @param {*} value The value to wrap. + */ + function LazyWrapper(value) { + this.__wrapped__ = value; + this.__actions__ = []; + this.__dir__ = 1; + this.__filtered__ = false; + this.__iteratees__ = []; + this.__takeCount__ = MAX_ARRAY_LENGTH; + this.__views__ = []; + } + + /** + * Creates a clone of the lazy wrapper object. + * + * @private + * @name clone + * @memberOf LazyWrapper + * @returns {Object} Returns the cloned `LazyWrapper` object. + */ + function lazyClone() { + var result = new LazyWrapper(this.__wrapped__); + result.__actions__ = copyArray(this.__actions__); + result.__dir__ = this.__dir__; + result.__filtered__ = this.__filtered__; + result.__iteratees__ = copyArray(this.__iteratees__); + result.__takeCount__ = this.__takeCount__; + result.__views__ = copyArray(this.__views__); + return result; + } + + /** + * Reverses the direction of lazy iteration. + * + * @private + * @name reverse + * @memberOf LazyWrapper + * @returns {Object} Returns the new reversed `LazyWrapper` object. + */ + function lazyReverse() { + if (this.__filtered__) { + var result = new LazyWrapper(this); + result.__dir__ = -1; + result.__filtered__ = true; + } else { + result = this.clone(); + result.__dir__ *= -1; + } + return result; + } + + /** + * Extracts the unwrapped value from its lazy wrapper. + * + * @private + * @name value + * @memberOf LazyWrapper + * @returns {*} Returns the unwrapped value. + */ + function lazyValue() { + var array = this.__wrapped__.value(), + dir = this.__dir__, + isArr = isArray(array), + isRight = dir < 0, + arrLength = isArr ? array.length : 0, + view = getView(0, arrLength, this.__views__), + start = view.start, + end = view.end, + length = end - start, + index = isRight ? end : start - 1, + iteratees = this.__iteratees__, + iterLength = iteratees.length, + resIndex = 0, + takeCount = nativeMin(length, this.__takeCount__); + + if (!isArr || (!isRight && arrLength == length && takeCount == length)) { + return baseWrapperValue(array, this.__actions__); + } + var result = []; + + outer: while (length-- && resIndex < takeCount) { + index += dir; + + var iterIndex = -1, + value = array[index]; + + while (++iterIndex < iterLength) { + var data = iteratees[iterIndex], + iteratee = data.iteratee, + type = data.type, + computed = iteratee(value); + + if (type == LAZY_MAP_FLAG) { + value = computed; + } else if (!computed) { + if (type == LAZY_FILTER_FLAG) { + continue outer; + } else { + break outer; + } + } + } + result[resIndex++] = value; + } + return result; + } + + // Ensure `LazyWrapper` is an instance of `baseLodash`. + LazyWrapper.prototype = baseCreate(baseLodash.prototype); + LazyWrapper.prototype.constructor = LazyWrapper; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a hash object. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function Hash(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the hash. + * + * @private + * @name clear + * @memberOf Hash + */ + function hashClear() { + this.__data__ = nativeCreate ? nativeCreate(null) : {}; + this.size = 0; + } + + /** + * Removes `key` and its value from the hash. + * + * @private + * @name delete + * @memberOf Hash + * @param {Object} hash The hash to modify. + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function hashDelete(key) { + var result = this.has(key) && delete this.__data__[key]; + this.size -= result ? 1 : 0; + return result; + } + + /** + * Gets the hash value for `key`. + * + * @private + * @name get + * @memberOf Hash + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function hashGet(key) { + var data = this.__data__; + if (nativeCreate) { + var result = data[key]; + return result === HASH_UNDEFINED ? undefined : result; + } + return hasOwnProperty.call(data, key) ? data[key] : undefined; + } + + /** + * Checks if a hash value for `key` exists. + * + * @private + * @name has + * @memberOf Hash + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function hashHas(key) { + var data = this.__data__; + return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key); + } + + /** + * Sets the hash `key` to `value`. + * + * @private + * @name set + * @memberOf Hash + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the hash instance. + */ + function hashSet(key, value) { + var data = this.__data__; + this.size += this.has(key) ? 0 : 1; + data[key] = nativeCreate && value === undefined ? HASH_UNDEFINED : value; + return this; + } + + // Add methods to `Hash`. + Hash.prototype.clear = hashClear; + Hash.prototype['delete'] = hashDelete; + Hash.prototype.get = hashGet; + Hash.prototype.has = hashHas; + Hash.prototype.set = hashSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates an list cache object. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function ListCache(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the list cache. + * + * @private + * @name clear + * @memberOf ListCache + */ + function listCacheClear() { + this.__data__ = []; + this.size = 0; + } + + /** + * Removes `key` and its value from the list cache. + * + * @private + * @name delete + * @memberOf ListCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function listCacheDelete(key) { + var data = this.__data__, + index = assocIndexOf(data, key); + + if (index < 0) { + return false; + } + var lastIndex = data.length - 1; + if (index == lastIndex) { + data.pop(); + } else { + splice.call(data, index, 1); + } + --this.size; + return true; + } + + /** + * Gets the list cache value for `key`. + * + * @private + * @name get + * @memberOf ListCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function listCacheGet(key) { + var data = this.__data__, + index = assocIndexOf(data, key); + + return index < 0 ? undefined : data[index][1]; + } + + /** + * Checks if a list cache value for `key` exists. + * + * @private + * @name has + * @memberOf ListCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function listCacheHas(key) { + return assocIndexOf(this.__data__, key) > -1; + } + + /** + * Sets the list cache `key` to `value`. + * + * @private + * @name set + * @memberOf ListCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the list cache instance. + */ + function listCacheSet(key, value) { + var data = this.__data__, + index = assocIndexOf(data, key); + + if (index < 0) { + ++this.size; + data.push([key, value]); + } else { + data[index][1] = value; + } + return this; + } + + // Add methods to `ListCache`. + ListCache.prototype.clear = listCacheClear; + ListCache.prototype['delete'] = listCacheDelete; + ListCache.prototype.get = listCacheGet; + ListCache.prototype.has = listCacheHas; + ListCache.prototype.set = listCacheSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a map cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function MapCache(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the map. + * + * @private + * @name clear + * @memberOf MapCache + */ + function mapCacheClear() { + this.size = 0; + this.__data__ = { + hash: new Hash(), + map: new (Map || ListCache)(), + string: new Hash(), + }; + } + + /** + * Removes `key` and its value from the map. + * + * @private + * @name delete + * @memberOf MapCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function mapCacheDelete(key) { + var result = getMapData(this, key)['delete'](key); + this.size -= result ? 1 : 0; + return result; + } + + /** + * Gets the map value for `key`. + * + * @private + * @name get + * @memberOf MapCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function mapCacheGet(key) { + return getMapData(this, key).get(key); + } + + /** + * Checks if a map value for `key` exists. + * + * @private + * @name has + * @memberOf MapCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function mapCacheHas(key) { + return getMapData(this, key).has(key); + } + + /** + * Sets the map `key` to `value`. + * + * @private + * @name set + * @memberOf MapCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the map cache instance. + */ + function mapCacheSet(key, value) { + var data = getMapData(this, key), + size = data.size; + + data.set(key, value); + this.size += data.size == size ? 0 : 1; + return this; + } + + // Add methods to `MapCache`. + MapCache.prototype.clear = mapCacheClear; + MapCache.prototype['delete'] = mapCacheDelete; + MapCache.prototype.get = mapCacheGet; + MapCache.prototype.has = mapCacheHas; + MapCache.prototype.set = mapCacheSet; + + /*------------------------------------------------------------------------*/ + + /** + * + * Creates an array cache object to store unique values. + * + * @private + * @constructor + * @param {Array} [values] The values to cache. + */ + function SetCache(values) { + var index = -1, + length = values == null ? 0 : values.length; + + this.__data__ = new MapCache(); + while (++index < length) { + this.add(values[index]); + } + } + + /** + * Adds `value` to the array cache. + * + * @private + * @name add + * @memberOf SetCache + * @alias push + * @param {*} value The value to cache. + * @returns {Object} Returns the cache instance. + */ + function setCacheAdd(value) { + this.__data__.set(value, HASH_UNDEFINED); + return this; + } + + /** + * Checks if `value` is in the array cache. + * + * @private + * @name has + * @memberOf SetCache + * @param {*} value The value to search for. + * @returns {number} Returns `true` if `value` is found, else `false`. + */ + function setCacheHas(value) { + return this.__data__.has(value); + } + + // Add methods to `SetCache`. + SetCache.prototype.add = SetCache.prototype.push = setCacheAdd; + SetCache.prototype.has = setCacheHas; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a stack cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function Stack(entries) { + var data = (this.__data__ = new ListCache(entries)); + this.size = data.size; + } + + /** + * Removes all key-value entries from the stack. + * + * @private + * @name clear + * @memberOf Stack + */ + function stackClear() { + this.__data__ = new ListCache(); + this.size = 0; + } + + /** + * Removes `key` and its value from the stack. + * + * @private + * @name delete + * @memberOf Stack + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function stackDelete(key) { + var data = this.__data__, + result = data['delete'](key); + + this.size = data.size; + return result; + } + + /** + * Gets the stack value for `key`. + * + * @private + * @name get + * @memberOf Stack + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function stackGet(key) { + return this.__data__.get(key); + } + + /** + * Checks if a stack value for `key` exists. + * + * @private + * @name has + * @memberOf Stack + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function stackHas(key) { + return this.__data__.has(key); + } + + /** + * Sets the stack `key` to `value`. + * + * @private + * @name set + * @memberOf Stack + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the stack cache instance. + */ + function stackSet(key, value) { + var data = this.__data__; + if (data instanceof ListCache) { + var pairs = data.__data__; + if (!Map || pairs.length < LARGE_ARRAY_SIZE - 1) { + pairs.push([key, value]); + this.size = ++data.size; + return this; + } + data = this.__data__ = new MapCache(pairs); + } + data.set(key, value); + this.size = data.size; + return this; + } + + // Add methods to `Stack`. + Stack.prototype.clear = stackClear; + Stack.prototype['delete'] = stackDelete; + Stack.prototype.get = stackGet; + Stack.prototype.has = stackHas; + Stack.prototype.set = stackSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates an array of the enumerable property names of the array-like `value`. + * + * @private + * @param {*} value The value to query. + * @param {boolean} inherited Specify returning inherited property names. + * @returns {Array} Returns the array of property names. + */ + function arrayLikeKeys(value, inherited) { + var isArr = isArray(value), + isArg = !isArr && isArguments(value), + isBuff = !isArr && !isArg && isBuffer(value), + isType = !isArr && !isArg && !isBuff && isTypedArray(value), + skipIndexes = isArr || isArg || isBuff || isType, + result = skipIndexes ? baseTimes(value.length, String) : [], + length = result.length; + + for (var key in value) { + if ( + (inherited || hasOwnProperty.call(value, key)) && + !( + skipIndexes && + // Safari 9 has enumerable `arguments.length` in strict mode. + (key == 'length' || + // Node.js 0.10 has enumerable non-index properties on buffers. + (isBuff && (key == 'offset' || key == 'parent')) || + // PhantomJS 2 has enumerable non-index properties on typed arrays. + (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) || + // Skip index properties. + isIndex(key, length)) + ) + ) { + result.push(key); + } + } + return result; + } + + /** + * A specialized version of `_.sample` for arrays. + * + * @private + * @param {Array} array The array to sample. + * @returns {*} Returns the random element. + */ + function arraySample(array) { + var length = array.length; + return length ? array[baseRandom(0, length - 1)] : undefined; + } + + /** + * A specialized version of `_.sampleSize` for arrays. + * + * @private + * @param {Array} array The array to sample. + * @param {number} n The number of elements to sample. + * @returns {Array} Returns the random elements. + */ + function arraySampleSize(array, n) { + return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length)); + } + + /** + * A specialized version of `_.shuffle` for arrays. + * + * @private + * @param {Array} array The array to shuffle. + * @returns {Array} Returns the new shuffled array. + */ + function arrayShuffle(array) { + return shuffleSelf(copyArray(array)); + } + + /** + * This function is like `assignValue` except that it doesn't assign + * `undefined` values. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignMergeValue(object, key, value) { + if ( + (value !== undefined && !eq(object[key], value)) || + (value === undefined && !(key in object)) + ) { + baseAssignValue(object, key, value); + } + } + + /** + * Assigns `value` to `key` of `object` if the existing value is not equivalent + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignValue(object, key, value) { + var objValue = object[key]; + if ( + !(hasOwnProperty.call(object, key) && eq(objValue, value)) || + (value === undefined && !(key in object)) + ) { + baseAssignValue(object, key, value); + } + } + + /** + * Gets the index at which the `key` is found in `array` of key-value pairs. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} key The key to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function assocIndexOf(array, key) { + var length = array.length; + while (length--) { + if (eq(array[length][0], key)) { + return length; + } + } + return -1; + } + + /** + * Aggregates elements of `collection` on `accumulator` with keys transformed + * by `iteratee` and values set by `setter`. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform keys. + * @param {Object} accumulator The initial aggregated object. + * @returns {Function} Returns `accumulator`. + */ + function baseAggregator(collection, setter, iteratee, accumulator) { + baseEach(collection, function (value, key, collection) { + setter(accumulator, value, iteratee(value), collection); + }); + return accumulator; + } + + /** + * The base implementation of `_.assign` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssign(object, source) { + return object && copyObject(source, keys(source), object); + } + + /** + * The base implementation of `_.assignIn` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssignIn(object, source) { + return object && copyObject(source, keysIn(source), object); + } + + /** + * The base implementation of `assignValue` and `assignMergeValue` without + * value checks. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function baseAssignValue(object, key, value) { + if (key == '__proto__' && defineProperty) { + defineProperty(object, key, { + configurable: true, + enumerable: true, + value: value, + writable: true, + }); + } else { + object[key] = value; + } + } + + /** + * The base implementation of `_.at` without support for individual paths. + * + * @private + * @param {Object} object The object to iterate over. + * @param {string[]} paths The property paths to pick. + * @returns {Array} Returns the picked elements. + */ + function baseAt(object, paths) { + var index = -1, + length = paths.length, + result = Array(length), + skip = object == null; + + while (++index < length) { + result[index] = skip ? undefined : get(object, paths[index]); + } + return result; + } + + /** + * The base implementation of `_.clamp` which doesn't coerce arguments. + * + * @private + * @param {number} number The number to clamp. + * @param {number} [lower] The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the clamped number. + */ + function baseClamp(number, lower, upper) { + if (number === number) { + if (upper !== undefined) { + number = number <= upper ? number : upper; + } + if (lower !== undefined) { + number = number >= lower ? number : lower; + } + } + return number; + } + + /** + * The base implementation of `_.clone` and `_.cloneDeep` which tracks + * traversed objects. + * + * @private + * @param {*} value The value to clone. + * @param {boolean} bitmask The bitmask flags. + * 1 - Deep clone + * 2 - Flatten inherited properties + * 4 - Clone symbols + * @param {Function} [customizer] The function to customize cloning. + * @param {string} [key] The key of `value`. + * @param {Object} [object] The parent object of `value`. + * @param {Object} [stack] Tracks traversed objects and their clone counterparts. + * @returns {*} Returns the cloned value. + */ + function baseClone(value, bitmask, customizer, key, object, stack) { + var result, + isDeep = bitmask & CLONE_DEEP_FLAG, + isFlat = bitmask & CLONE_FLAT_FLAG, + isFull = bitmask & CLONE_SYMBOLS_FLAG; + + if (customizer) { + result = object ? customizer(value, key, object, stack) : customizer(value); + } + if (result !== undefined) { + return result; + } + if (!isObject(value)) { + return value; + } + var isArr = isArray(value); + if (isArr) { + result = initCloneArray(value); + if (!isDeep) { + return copyArray(value, result); + } + } else { + var tag = getTag(value), + isFunc = tag == funcTag || tag == genTag; + + if (isBuffer(value)) { + return cloneBuffer(value, isDeep); + } + if (tag == objectTag || tag == argsTag || (isFunc && !object)) { + result = isFlat || isFunc ? {} : initCloneObject(value); + if (!isDeep) { + return isFlat + ? copySymbolsIn(value, baseAssignIn(result, value)) + : copySymbols(value, baseAssign(result, value)); + } + } else { + if (!cloneableTags[tag]) { + return object ? value : {}; + } + result = initCloneByTag(value, tag, isDeep); + } + } + // Check for circular references and return its corresponding clone. + stack || (stack = new Stack()); + var stacked = stack.get(value); + if (stacked) { + return stacked; + } + stack.set(value, result); + + if (isSet(value)) { + value.forEach(function (subValue) { + result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack)); + }); + + return result; + } + + if (isMap(value)) { + value.forEach(function (subValue, key) { + result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack)); + }); + + return result; + } + + var keysFunc = isFull ? (isFlat ? getAllKeysIn : getAllKeys) : isFlat ? keysIn : keys; + + var props = isArr ? undefined : keysFunc(value); + arrayEach(props || value, function (subValue, key) { + if (props) { + key = subValue; + subValue = value[key]; + } + // Recursively populate clone (susceptible to call stack limits). + assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack)); + }); + return result; + } + + /** + * The base implementation of `_.conforms` which doesn't clone `source`. + * + * @private + * @param {Object} source The object of property predicates to conform to. + * @returns {Function} Returns the new spec function. + */ + function baseConforms(source) { + var props = keys(source); + return function (object) { + return baseConformsTo(object, source, props); + }; + } + + /** + * The base implementation of `_.conformsTo` which accepts `props` to check. + * + * @private + * @param {Object} object The object to inspect. + * @param {Object} source The object of property predicates to conform to. + * @returns {boolean} Returns `true` if `object` conforms, else `false`. + */ + function baseConformsTo(object, source, props) { + var length = props.length; + if (object == null) { + return !length; + } + object = Object(object); + while (length--) { + var key = props[length], + predicate = source[key], + value = object[key]; + + if ((value === undefined && !(key in object)) || !predicate(value)) { + return false; + } + } + return true; + } + + /** + * The base implementation of `_.delay` and `_.defer` which accepts `args` + * to provide to `func`. + * + * @private + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @param {Array} args The arguments to provide to `func`. + * @returns {number|Object} Returns the timer id or timeout object. + */ + function baseDelay(func, wait, args) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return setTimeout(function () { + func.apply(undefined, args); + }, wait); + } + + /** + * The base implementation of methods like `_.difference` without support + * for excluding multiple arrays or iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Array} values The values to exclude. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + */ + function baseDifference(array, values, iteratee, comparator) { + var index = -1, + includes = arrayIncludes, + isCommon = true, + length = array.length, + result = [], + valuesLength = values.length; + + if (!length) { + return result; + } + if (iteratee) { + values = arrayMap(values, baseUnary(iteratee)); + } + if (comparator) { + includes = arrayIncludesWith; + isCommon = false; + } else if (values.length >= LARGE_ARRAY_SIZE) { + includes = cacheHas; + isCommon = false; + values = new SetCache(values); + } + outer: while (++index < length) { + var value = array[index], + computed = iteratee == null ? value : iteratee(value); + + value = comparator || value !== 0 ? value : 0; + if (isCommon && computed === computed) { + var valuesIndex = valuesLength; + while (valuesIndex--) { + if (values[valuesIndex] === computed) { + continue outer; + } + } + result.push(value); + } else if (!includes(values, computed, comparator)) { + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.forEach` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEach = createBaseEach(baseForOwn); + + /** + * The base implementation of `_.forEachRight` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEachRight = createBaseEach(baseForOwnRight, true); + + /** + * The base implementation of `_.every` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false` + */ + function baseEvery(collection, predicate) { + var result = true; + baseEach(collection, function (value, index, collection) { + result = !!predicate(value, index, collection); + return result; + }); + return result; + } + + /** + * The base implementation of methods like `_.max` and `_.min` which accepts a + * `comparator` to determine the extremum value. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The iteratee invoked per iteration. + * @param {Function} comparator The comparator used to compare values. + * @returns {*} Returns the extremum value. + */ + function baseExtremum(array, iteratee, comparator) { + var index = -1, + length = array.length; + + while (++index < length) { + var value = array[index], + current = iteratee(value); + + if ( + current != null && + (computed === undefined + ? current === current && !isSymbol(current) + : comparator(current, computed)) + ) { + var computed = current, + result = value; + } + } + return result; + } + + /** + * The base implementation of `_.fill` without an iteratee call guard. + * + * @private + * @param {Array} array The array to fill. + * @param {*} value The value to fill `array` with. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns `array`. + */ + function baseFill(array, value, start, end) { + var length = array.length; + + start = toInteger(start); + if (start < 0) { + start = -start > length ? 0 : length + start; + } + end = end === undefined || end > length ? length : toInteger(end); + if (end < 0) { + end += length; + } + end = start > end ? 0 : toLength(end); + while (start < end) { + array[start++] = value; + } + return array; + } + + /** + * The base implementation of `_.filter` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + */ + function baseFilter(collection, predicate) { + var result = []; + baseEach(collection, function (value, index, collection) { + if (predicate(value, index, collection)) { + result.push(value); + } + }); + return result; + } + + /** + * The base implementation of `_.flatten` with support for restricting flattening. + * + * @private + * @param {Array} array The array to flatten. + * @param {number} depth The maximum recursion depth. + * @param {boolean} [predicate=isFlattenable] The function invoked per iteration. + * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks. + * @param {Array} [result=[]] The initial result value. + * @returns {Array} Returns the new flattened array. + */ + function baseFlatten(array, depth, predicate, isStrict, result) { + var index = -1, + length = array.length; + + predicate || (predicate = isFlattenable); + result || (result = []); + + while (++index < length) { + var value = array[index]; + if (depth > 0 && predicate(value)) { + if (depth > 1) { + // Recursively flatten arrays (susceptible to call stack limits). + baseFlatten(value, depth - 1, predicate, isStrict, result); + } else { + arrayPush(result, value); + } + } else if (!isStrict) { + result[result.length] = value; + } + } + return result; + } + + /** + * The base implementation of `baseForOwn` which iterates over `object` + * properties returned by `keysFunc` and invokes `iteratee` for each property. + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseFor = createBaseFor(); + + /** + * This function is like `baseFor` except that it iterates over properties + * in the opposite order. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseForRight = createBaseFor(true); + + /** + * The base implementation of `_.forOwn` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwn(object, iteratee) { + return object && baseFor(object, iteratee, keys); + } + + /** + * The base implementation of `_.forOwnRight` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwnRight(object, iteratee) { + return object && baseForRight(object, iteratee, keys); + } + + /** + * The base implementation of `_.functions` which creates an array of + * `object` function property names filtered from `props`. + * + * @private + * @param {Object} object The object to inspect. + * @param {Array} props The property names to filter. + * @returns {Array} Returns the function names. + */ + function baseFunctions(object, props) { + return arrayFilter(props, function (key) { + return isFunction(object[key]); + }); + } + + /** + * The base implementation of `_.get` without support for default values. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @returns {*} Returns the resolved value. + */ + function baseGet(object, path) { + path = castPath(path, object); + + var index = 0, + length = path.length; + + while (object != null && index < length) { + object = object[toKey(path[index++])]; + } + return index && index == length ? object : undefined; + } + + /** + * The base implementation of `getAllKeys` and `getAllKeysIn` which uses + * `keysFunc` and `symbolsFunc` to get the enumerable property names and + * symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Function} keysFunc The function to get the keys of `object`. + * @param {Function} symbolsFunc The function to get the symbols of `object`. + * @returns {Array} Returns the array of property names and symbols. + */ + function baseGetAllKeys(object, keysFunc, symbolsFunc) { + var result = keysFunc(object); + return isArray(object) ? result : arrayPush(result, symbolsFunc(object)); + } + + /** + * The base implementation of `getTag` without fallbacks for buggy environments. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + function baseGetTag(value) { + if (value == null) { + return value === undefined ? undefinedTag : nullTag; + } + return symToStringTag && symToStringTag in Object(value) + ? getRawTag(value) + : objectToString(value); + } + + /** + * The base implementation of `_.gt` which doesn't coerce arguments. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than `other`, + * else `false`. + */ + function baseGt(value, other) { + return value > other; + } + + /** + * The base implementation of `_.has` without support for deep paths. + * + * @private + * @param {Object} [object] The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHas(object, key) { + return object != null && hasOwnProperty.call(object, key); + } + + /** + * The base implementation of `_.hasIn` without support for deep paths. + * + * @private + * @param {Object} [object] The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHasIn(object, key) { + return object != null && key in Object(object); + } + + /** + * The base implementation of `_.inRange` which doesn't coerce arguments. + * + * @private + * @param {number} number The number to check. + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @returns {boolean} Returns `true` if `number` is in the range, else `false`. + */ + function baseInRange(number, start, end) { + return number >= nativeMin(start, end) && number < nativeMax(start, end); + } + + /** + * The base implementation of methods like `_.intersection`, without support + * for iteratee shorthands, that accepts an array of arrays to inspect. + * + * @private + * @param {Array} arrays The arrays to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of shared values. + */ + function baseIntersection(arrays, iteratee, comparator) { + var includes = comparator ? arrayIncludesWith : arrayIncludes, + length = arrays[0].length, + othLength = arrays.length, + othIndex = othLength, + caches = Array(othLength), + maxLength = Infinity, + result = []; + + while (othIndex--) { + var array = arrays[othIndex]; + if (othIndex && iteratee) { + array = arrayMap(array, baseUnary(iteratee)); + } + maxLength = nativeMin(array.length, maxLength); + caches[othIndex] = + !comparator && (iteratee || (length >= 120 && array.length >= 120)) + ? new SetCache(othIndex && array) + : undefined; + } + array = arrays[0]; + + var index = -1, + seen = caches[0]; + + outer: while (++index < length && result.length < maxLength) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + value = comparator || value !== 0 ? value : 0; + if (!(seen ? cacheHas(seen, computed) : includes(result, computed, comparator))) { + othIndex = othLength; + while (--othIndex) { + var cache = caches[othIndex]; + if ( + !(cache ? cacheHas(cache, computed) : includes(arrays[othIndex], computed, comparator)) + ) { + continue outer; + } + } + if (seen) { + seen.push(computed); + } + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.invert` and `_.invertBy` which inverts + * `object` with values transformed by `iteratee` and set by `setter`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform values. + * @param {Object} accumulator The initial inverted object. + * @returns {Function} Returns `accumulator`. + */ + function baseInverter(object, setter, iteratee, accumulator) { + baseForOwn(object, function (value, key, object) { + setter(accumulator, iteratee(value), key, object); + }); + return accumulator; + } + + /** + * The base implementation of `_.invoke` without support for individual + * method arguments. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the method to invoke. + * @param {Array} args The arguments to invoke the method with. + * @returns {*} Returns the result of the invoked method. + */ + function baseInvoke(object, path, args) { + path = castPath(path, object); + object = parent(object, path); + var func = object == null ? object : object[toKey(last(path))]; + return func == null ? undefined : apply(func, object, args); + } + + /** + * The base implementation of `_.isArguments`. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an `arguments` object, + */ + function baseIsArguments(value) { + return isObjectLike(value) && baseGetTag(value) == argsTag; + } + + /** + * The base implementation of `_.isArrayBuffer` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. + */ + function baseIsArrayBuffer(value) { + return isObjectLike(value) && baseGetTag(value) == arrayBufferTag; + } + + /** + * The base implementation of `_.isDate` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a date object, else `false`. + */ + function baseIsDate(value) { + return isObjectLike(value) && baseGetTag(value) == dateTag; + } + + /** + * The base implementation of `_.isEqual` which supports partial comparisons + * and tracks traversed objects. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @param {boolean} bitmask The bitmask flags. + * 1 - Unordered comparison + * 2 - Partial comparison + * @param {Function} [customizer] The function to customize comparisons. + * @param {Object} [stack] Tracks traversed `value` and `other` objects. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + */ + function baseIsEqual(value, other, bitmask, customizer, stack) { + if (value === other) { + return true; + } + if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) { + return value !== value && other !== other; + } + return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack); + } + + /** + * A specialized version of `baseIsEqual` for arrays and objects which performs + * deep comparisons and tracks traversed objects enabling objects with circular + * references to be compared. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} [stack] Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) { + var objIsArr = isArray(object), + othIsArr = isArray(other), + objTag = objIsArr ? arrayTag : getTag(object), + othTag = othIsArr ? arrayTag : getTag(other); + + objTag = objTag == argsTag ? objectTag : objTag; + othTag = othTag == argsTag ? objectTag : othTag; + + var objIsObj = objTag == objectTag, + othIsObj = othTag == objectTag, + isSameTag = objTag == othTag; + + if (isSameTag && isBuffer(object)) { + if (!isBuffer(other)) { + return false; + } + objIsArr = true; + objIsObj = false; + } + if (isSameTag && !objIsObj) { + stack || (stack = new Stack()); + return objIsArr || isTypedArray(object) + ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) + : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack); + } + if (!(bitmask & COMPARE_PARTIAL_FLAG)) { + var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'), + othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__'); + + if (objIsWrapped || othIsWrapped) { + var objUnwrapped = objIsWrapped ? object.value() : object, + othUnwrapped = othIsWrapped ? other.value() : other; + + stack || (stack = new Stack()); + return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack); + } + } + if (!isSameTag) { + return false; + } + stack || (stack = new Stack()); + return equalObjects(object, other, bitmask, customizer, equalFunc, stack); + } + + /** + * The base implementation of `_.isMap` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a map, else `false`. + */ + function baseIsMap(value) { + return isObjectLike(value) && getTag(value) == mapTag; + } + + /** + * The base implementation of `_.isMatch` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @param {Array} matchData The property names, values, and compare flags to match. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + */ + function baseIsMatch(object, source, matchData, customizer) { + var index = matchData.length, + length = index, + noCustomizer = !customizer; + + if (object == null) { + return !length; + } + object = Object(object); + while (index--) { + var data = matchData[index]; + if (noCustomizer && data[2] ? data[1] !== object[data[0]] : !(data[0] in object)) { + return false; + } + } + while (++index < length) { + data = matchData[index]; + var key = data[0], + objValue = object[key], + srcValue = data[1]; + + if (noCustomizer && data[2]) { + if (objValue === undefined && !(key in object)) { + return false; + } + } else { + var stack = new Stack(); + if (customizer) { + var result = customizer(objValue, srcValue, key, object, source, stack); + } + if ( + !(result === undefined + ? baseIsEqual( + srcValue, + objValue, + COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, + customizer, + stack + ) + : result) + ) { + return false; + } + } + } + return true; + } + + /** + * The base implementation of `_.isNative` without bad shim checks. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, + * else `false`. + */ + function baseIsNative(value) { + if (!isObject(value) || isMasked(value)) { + return false; + } + var pattern = isFunction(value) ? reIsNative : reIsHostCtor; + return pattern.test(toSource(value)); + } + + /** + * The base implementation of `_.isRegExp` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. + */ + function baseIsRegExp(value) { + return isObjectLike(value) && baseGetTag(value) == regexpTag; + } + + /** + * The base implementation of `_.isSet` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a set, else `false`. + */ + function baseIsSet(value) { + return isObjectLike(value) && getTag(value) == setTag; + } + + /** + * The base implementation of `_.isTypedArray` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. + */ + function baseIsTypedArray(value) { + return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[baseGetTag(value)]; + } + + /** + * The base implementation of `_.iteratee`. + * + * @private + * @param {*} [value=_.identity] The value to convert to an iteratee. + * @returns {Function} Returns the iteratee. + */ + function baseIteratee(value) { + // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9. + // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details. + if (typeof value == 'function') { + return value; + } + if (value == null) { + return identity; + } + if (typeof value == 'object') { + return isArray(value) ? baseMatchesProperty(value[0], value[1]) : baseMatches(value); + } + return property(value); + } + + /** + * The base implementation of `_.keys` which doesn't treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeys(object) { + if (!isPrototype(object)) { + return nativeKeys(object); + } + var result = []; + for (var key in Object(object)) { + if (hasOwnProperty.call(object, key) && key != 'constructor') { + result.push(key); + } + } + return result; + } + + /** + * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeysIn(object) { + if (!isObject(object)) { + return nativeKeysIn(object); + } + var isProto = isPrototype(object), + result = []; + + for (var key in object) { + if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) { + result.push(key); + } + } + return result; + } + + /** + * The base implementation of `_.lt` which doesn't coerce arguments. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than `other`, + * else `false`. + */ + function baseLt(value, other) { + return value < other; + } + + /** + * The base implementation of `_.map` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function baseMap(collection, iteratee) { + var index = -1, + result = isArrayLike(collection) ? Array(collection.length) : []; + + baseEach(collection, function (value, key, collection) { + result[++index] = iteratee(value, key, collection); + }); + return result; + } + + /** + * The base implementation of `_.matches` which doesn't clone `source`. + * + * @private + * @param {Object} source The object of property values to match. + * @returns {Function} Returns the new spec function. + */ + function baseMatches(source) { + var matchData = getMatchData(source); + if (matchData.length == 1 && matchData[0][2]) { + return matchesStrictComparable(matchData[0][0], matchData[0][1]); + } + return function (object) { + return object === source || baseIsMatch(object, source, matchData); + }; + } + + /** + * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`. + * + * @private + * @param {string} path The path of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + */ + function baseMatchesProperty(path, srcValue) { + if (isKey(path) && isStrictComparable(srcValue)) { + return matchesStrictComparable(toKey(path), srcValue); + } + return function (object) { + var objValue = get(object, path); + return objValue === undefined && objValue === srcValue + ? hasIn(object, path) + : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG); + }; + } + + /** + * The base implementation of `_.merge` without support for multiple sources. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {number} srcIndex The index of `source`. + * @param {Function} [customizer] The function to customize merged values. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + */ + function baseMerge(object, source, srcIndex, customizer, stack) { + if (object === source) { + return; + } + baseFor( + source, + function (srcValue, key) { + if (isObject(srcValue)) { + stack || (stack = new Stack()); + baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack); + } else { + var newValue = customizer + ? customizer(safeGet(object, key), srcValue, key + '', object, source, stack) + : undefined; + + if (newValue === undefined) { + newValue = srcValue; + } + assignMergeValue(object, key, newValue); + } + }, + keysIn + ); + } + + /** + * A specialized version of `baseMerge` for arrays and objects which performs + * deep merges and tracks traversed objects enabling objects with circular + * references to be merged. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {string} key The key of the value to merge. + * @param {number} srcIndex The index of `source`. + * @param {Function} mergeFunc The function to merge values. + * @param {Function} [customizer] The function to customize assigned values. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + */ + function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) { + var objValue = safeGet(object, key), + srcValue = safeGet(source, key), + stacked = stack.get(srcValue); + + if (stacked) { + assignMergeValue(object, key, stacked); + return; + } + var newValue = customizer + ? customizer(objValue, srcValue, key + '', object, source, stack) + : undefined; + + var isCommon = newValue === undefined; + + if (isCommon) { + var isArr = isArray(srcValue), + isBuff = !isArr && isBuffer(srcValue), + isTyped = !isArr && !isBuff && isTypedArray(srcValue); + + newValue = srcValue; + if (isArr || isBuff || isTyped) { + if (isArray(objValue)) { + newValue = objValue; + } else if (isArrayLikeObject(objValue)) { + newValue = copyArray(objValue); + } else if (isBuff) { + isCommon = false; + newValue = cloneBuffer(srcValue, true); + } else if (isTyped) { + isCommon = false; + newValue = cloneTypedArray(srcValue, true); + } else { + newValue = []; + } + } else if (isPlainObject(srcValue) || isArguments(srcValue)) { + newValue = objValue; + if (isArguments(objValue)) { + newValue = toPlainObject(objValue); + } else if (!isObject(objValue) || (srcIndex && isFunction(objValue))) { + newValue = initCloneObject(srcValue); + } + } else { + isCommon = false; + } + } + if (isCommon) { + // Recursively merge objects and arrays (susceptible to call stack limits). + stack.set(srcValue, newValue); + mergeFunc(newValue, srcValue, srcIndex, customizer, stack); + stack['delete'](srcValue); + } + assignMergeValue(object, key, newValue); + } + + /** + * The base implementation of `_.nth` which doesn't coerce arguments. + * + * @private + * @param {Array} array The array to query. + * @param {number} n The index of the element to return. + * @returns {*} Returns the nth element of `array`. + */ + function baseNth(array, n) { + var length = array.length; + if (!length) { + return; + } + n += n < 0 ? length : 0; + return isIndex(n, length) ? array[n] : undefined; + } + + /** + * The base implementation of `_.orderBy` without param guards. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. + * @param {string[]} orders The sort orders of `iteratees`. + * @returns {Array} Returns the new sorted array. + */ + function baseOrderBy(collection, iteratees, orders) { + var index = -1; + iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee())); + + var result = baseMap(collection, function (value, key, collection) { + var criteria = arrayMap(iteratees, function (iteratee) { + return iteratee(value); + }); + return { criteria: criteria, index: ++index, value: value }; + }); + + return baseSortBy(result, function (object, other) { + return compareMultiple(object, other, orders); + }); + } + + /** + * The base implementation of `_.pick` without support for individual + * property identifiers. + * + * @private + * @param {Object} object The source object. + * @param {string[]} paths The property paths to pick. + * @returns {Object} Returns the new object. + */ + function basePick(object, paths) { + return basePickBy(object, paths, function (value, path) { + return hasIn(object, path); + }); + } + + /** + * The base implementation of `_.pickBy` without support for iteratee shorthands. + * + * @private + * @param {Object} object The source object. + * @param {string[]} paths The property paths to pick. + * @param {Function} predicate The function invoked per property. + * @returns {Object} Returns the new object. + */ + function basePickBy(object, paths, predicate) { + var index = -1, + length = paths.length, + result = {}; + + while (++index < length) { + var path = paths[index], + value = baseGet(object, path); + + if (predicate(value, path)) { + baseSet(result, castPath(path, object), value); + } + } + return result; + } + + /** + * A specialized version of `baseProperty` which supports deep paths. + * + * @private + * @param {Array|string} path The path of the property to get. + * @returns {Function} Returns the new accessor function. + */ + function basePropertyDeep(path) { + return function (object) { + return baseGet(object, path); + }; + } + + /** + * The base implementation of `_.pullAllBy` without support for iteratee + * shorthands. + * + * @private + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns `array`. + */ + function basePullAll(array, values, iteratee, comparator) { + var indexOf = comparator ? baseIndexOfWith : baseIndexOf, + index = -1, + length = values.length, + seen = array; + + if (array === values) { + values = copyArray(values); + } + if (iteratee) { + seen = arrayMap(array, baseUnary(iteratee)); + } + while (++index < length) { + var fromIndex = 0, + value = values[index], + computed = iteratee ? iteratee(value) : value; + + while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) { + if (seen !== array) { + splice.call(seen, fromIndex, 1); + } + splice.call(array, fromIndex, 1); + } + } + return array; + } + + /** + * The base implementation of `_.pullAt` without support for individual + * indexes or capturing the removed elements. + * + * @private + * @param {Array} array The array to modify. + * @param {number[]} indexes The indexes of elements to remove. + * @returns {Array} Returns `array`. + */ + function basePullAt(array, indexes) { + var length = array ? indexes.length : 0, + lastIndex = length - 1; + + while (length--) { + var index = indexes[length]; + if (length == lastIndex || index !== previous) { + var previous = index; + if (isIndex(index)) { + splice.call(array, index, 1); + } else { + baseUnset(array, index); + } + } + } + return array; + } + + /** + * The base implementation of `_.random` without support for returning + * floating-point numbers. + * + * @private + * @param {number} lower The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the random number. + */ + function baseRandom(lower, upper) { + return lower + nativeFloor(nativeRandom() * (upper - lower + 1)); + } + + /** + * The base implementation of `_.range` and `_.rangeRight` which doesn't + * coerce arguments. + * + * @private + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @param {number} step The value to increment or decrement by. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the range of numbers. + */ + function baseRange(start, end, step, fromRight) { + var index = -1, + length = nativeMax(nativeCeil((end - start) / (step || 1)), 0), + result = Array(length); + + while (length--) { + result[fromRight ? length : ++index] = start; + start += step; + } + return result; + } + + /** + * The base implementation of `_.repeat` which doesn't coerce arguments. + * + * @private + * @param {string} string The string to repeat. + * @param {number} n The number of times to repeat the string. + * @returns {string} Returns the repeated string. + */ + function baseRepeat(string, n) { + var result = ''; + if (!string || n < 1 || n > MAX_SAFE_INTEGER) { + return result; + } + // Leverage the exponentiation by squaring algorithm for a faster repeat. + // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. + do { + if (n % 2) { + result += string; + } + n = nativeFloor(n / 2); + if (n) { + string += string; + } + } while (n); + + return result; + } + + /** + * The base implementation of `_.rest` which doesn't validate or coerce arguments. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + */ + function baseRest(func, start) { + return setToString(overRest(func, start, identity), func + ''); + } + + /** + * The base implementation of `_.sample`. + * + * @private + * @param {Array|Object} collection The collection to sample. + * @returns {*} Returns the random element. + */ + function baseSample(collection) { + return arraySample(values(collection)); + } + + /** + * The base implementation of `_.sampleSize` without param guards. + * + * @private + * @param {Array|Object} collection The collection to sample. + * @param {number} n The number of elements to sample. + * @returns {Array} Returns the random elements. + */ + function baseSampleSize(collection, n) { + var array = values(collection); + return shuffleSelf(array, baseClamp(n, 0, array.length)); + } + + /** + * The base implementation of `_.set`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @param {Function} [customizer] The function to customize path creation. + * @returns {Object} Returns `object`. + */ + function baseSet(object, path, value, customizer) { + if (!isObject(object)) { + return object; + } + path = castPath(path, object); + + var index = -1, + length = path.length, + lastIndex = length - 1, + nested = object; + + while (nested != null && ++index < length) { + var key = toKey(path[index]), + newValue = value; + + if (index != lastIndex) { + var objValue = nested[key]; + newValue = customizer ? customizer(objValue, key, nested) : undefined; + if (newValue === undefined) { + newValue = isObject(objValue) ? objValue : isIndex(path[index + 1]) ? [] : {}; + } + } + assignValue(nested, key, newValue); + nested = nested[key]; + } + return object; + } + + /** + * The base implementation of `setData` without support for hot loop shorting. + * + * @private + * @param {Function} func The function to associate metadata with. + * @param {*} data The metadata. + * @returns {Function} Returns `func`. + */ + var baseSetData = !metaMap + ? identity + : function (func, data) { + metaMap.set(func, data); + return func; + }; + + /** + * The base implementation of `setToString` without support for hot loop shorting. + * + * @private + * @param {Function} func The function to modify. + * @param {Function} string The `toString` result. + * @returns {Function} Returns `func`. + */ + var baseSetToString = !defineProperty + ? identity + : function (func, string) { + return defineProperty(func, 'toString', { + configurable: true, + enumerable: false, + value: constant(string), + writable: true, + }); + }; + + /** + * The base implementation of `_.shuffle`. + * + * @private + * @param {Array|Object} collection The collection to shuffle. + * @returns {Array} Returns the new shuffled array. + */ + function baseShuffle(collection) { + return shuffleSelf(values(collection)); + } + + /** + * The base implementation of `_.slice` without an iteratee call guard. + * + * @private + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function baseSlice(array, start, end) { + var index = -1, + length = array.length; + + if (start < 0) { + start = -start > length ? 0 : length + start; + } + end = end > length ? length : end; + if (end < 0) { + end += length; + } + length = start > end ? 0 : (end - start) >>> 0; + start >>>= 0; + + var result = Array(length); + while (++index < length) { + result[index] = array[index + start]; + } + return result; + } + + /** + * The base implementation of `_.some` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + */ + function baseSome(collection, predicate) { + var result; + + baseEach(collection, function (value, index, collection) { + result = predicate(value, index, collection); + return !result; + }); + return !!result; + } + + /** + * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which + * performs a binary search of `array` to determine the index at which `value` + * should be inserted into `array` in order to maintain its sort order. + * + * @private + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {boolean} [retHighest] Specify returning the highest qualified index. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + */ + function baseSortedIndex(array, value, retHighest) { + var low = 0, + high = array == null ? low : array.length; + + if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) { + while (low < high) { + var mid = (low + high) >>> 1, + computed = array[mid]; + + if ( + computed !== null && + !isSymbol(computed) && + (retHighest ? computed <= value : computed < value) + ) { + low = mid + 1; + } else { + high = mid; + } + } + return high; + } + return baseSortedIndexBy(array, value, identity, retHighest); + } + + /** + * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy` + * which invokes `iteratee` for `value` and each element of `array` to compute + * their sort ranking. The iteratee is invoked with one argument; (value). + * + * @private + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} iteratee The iteratee invoked per element. + * @param {boolean} [retHighest] Specify returning the highest qualified index. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + */ + function baseSortedIndexBy(array, value, iteratee, retHighest) { + value = iteratee(value); + + var low = 0, + high = array == null ? 0 : array.length, + valIsNaN = value !== value, + valIsNull = value === null, + valIsSymbol = isSymbol(value), + valIsUndefined = value === undefined; + + while (low < high) { + var mid = nativeFloor((low + high) / 2), + computed = iteratee(array[mid]), + othIsDefined = computed !== undefined, + othIsNull = computed === null, + othIsReflexive = computed === computed, + othIsSymbol = isSymbol(computed); + + if (valIsNaN) { + var setLow = retHighest || othIsReflexive; + } else if (valIsUndefined) { + setLow = othIsReflexive && (retHighest || othIsDefined); + } else if (valIsNull) { + setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull); + } else if (valIsSymbol) { + setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol); + } else if (othIsNull || othIsSymbol) { + setLow = false; + } else { + setLow = retHighest ? computed <= value : computed < value; + } + if (setLow) { + low = mid + 1; + } else { + high = mid; + } + } + return nativeMin(high, MAX_ARRAY_INDEX); + } + + /** + * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without + * support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + */ + function baseSortedUniq(array, iteratee) { + var index = -1, + length = array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + if (!index || !eq(computed, seen)) { + var seen = computed; + result[resIndex++] = value === 0 ? 0 : value; + } + } + return result; + } + + /** + * The base implementation of `_.toNumber` which doesn't ensure correct + * conversions of binary, hexadecimal, or octal string values. + * + * @private + * @param {*} value The value to process. + * @returns {number} Returns the number. + */ + function baseToNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + return +value; + } + + /** + * The base implementation of `_.toString` which doesn't convert nullish + * values to empty strings. + * + * @private + * @param {*} value The value to process. + * @returns {string} Returns the string. + */ + function baseToString(value) { + // Exit early for strings to avoid a performance hit in some environments. + if (typeof value == 'string') { + return value; + } + if (isArray(value)) { + // Recursively convert values (susceptible to call stack limits). + return arrayMap(value, baseToString) + ''; + } + if (isSymbol(value)) { + return symbolToString ? symbolToString.call(value) : ''; + } + var result = value + ''; + return result == '0' && 1 / value == -INFINITY ? '-0' : result; + } + + /** + * The base implementation of `_.uniqBy` without support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new duplicate free array. + */ + function baseUniq(array, iteratee, comparator) { + var index = -1, + includes = arrayIncludes, + length = array.length, + isCommon = true, + result = [], + seen = result; + + if (comparator) { + isCommon = false; + includes = arrayIncludesWith; + } else if (length >= LARGE_ARRAY_SIZE) { + var set = iteratee ? null : createSet(array); + if (set) { + return setToArray(set); + } + isCommon = false; + includes = cacheHas; + seen = new SetCache(); + } else { + seen = iteratee ? [] : result; + } + outer: while (++index < length) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + value = comparator || value !== 0 ? value : 0; + if (isCommon && computed === computed) { + var seenIndex = seen.length; + while (seenIndex--) { + if (seen[seenIndex] === computed) { + continue outer; + } + } + if (iteratee) { + seen.push(computed); + } + result.push(value); + } else if (!includes(seen, computed, comparator)) { + if (seen !== result) { + seen.push(computed); + } + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.unset`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The property path to unset. + * @returns {boolean} Returns `true` if the property is deleted, else `false`. + */ + function baseUnset(object, path) { + path = castPath(path, object); + object = parent(object, path); + return object == null || delete object[toKey(last(path))]; + } + + /** + * The base implementation of `_.update`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to update. + * @param {Function} updater The function to produce the updated value. + * @param {Function} [customizer] The function to customize path creation. + * @returns {Object} Returns `object`. + */ + function baseUpdate(object, path, updater, customizer) { + return baseSet(object, path, updater(baseGet(object, path)), customizer); + } + + /** + * The base implementation of methods like `_.dropWhile` and `_.takeWhile` + * without support for iteratee shorthands. + * + * @private + * @param {Array} array The array to query. + * @param {Function} predicate The function invoked per iteration. + * @param {boolean} [isDrop] Specify dropping elements instead of taking them. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the slice of `array`. + */ + function baseWhile(array, predicate, isDrop, fromRight) { + var length = array.length, + index = fromRight ? length : -1; + + while ((fromRight ? index-- : ++index < length) && predicate(array[index], index, array)) {} + + return isDrop + ? baseSlice(array, fromRight ? 0 : index, fromRight ? index + 1 : length) + : baseSlice(array, fromRight ? index + 1 : 0, fromRight ? length : index); + } + + /** + * The base implementation of `wrapperValue` which returns the result of + * performing a sequence of actions on the unwrapped `value`, where each + * successive action is supplied the return value of the previous. + * + * @private + * @param {*} value The unwrapped value. + * @param {Array} actions Actions to perform to resolve the unwrapped value. + * @returns {*} Returns the resolved value. + */ + function baseWrapperValue(value, actions) { + var result = value; + if (result instanceof LazyWrapper) { + result = result.value(); + } + return arrayReduce( + actions, + function (result, action) { + return action.func.apply(action.thisArg, arrayPush([result], action.args)); + }, + result + ); + } + + /** + * The base implementation of methods like `_.xor`, without support for + * iteratee shorthands, that accepts an array of arrays to inspect. + * + * @private + * @param {Array} arrays The arrays to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of values. + */ + function baseXor(arrays, iteratee, comparator) { + var length = arrays.length; + if (length < 2) { + return length ? baseUniq(arrays[0]) : []; + } + var index = -1, + result = Array(length); + + while (++index < length) { + var array = arrays[index], + othIndex = -1; + + while (++othIndex < length) { + if (othIndex != index) { + result[index] = baseDifference( + result[index] || array, + arrays[othIndex], + iteratee, + comparator + ); + } + } + } + return baseUniq(baseFlatten(result, 1), iteratee, comparator); + } + + /** + * This base implementation of `_.zipObject` which assigns values using `assignFunc`. + * + * @private + * @param {Array} props The property identifiers. + * @param {Array} values The property values. + * @param {Function} assignFunc The function to assign values. + * @returns {Object} Returns the new object. + */ + function baseZipObject(props, values, assignFunc) { + var index = -1, + length = props.length, + valsLength = values.length, + result = {}; + + while (++index < length) { + var value = index < valsLength ? values[index] : undefined; + assignFunc(result, props[index], value); + } + return result; + } + + /** + * Casts `value` to an empty array if it's not an array like object. + * + * @private + * @param {*} value The value to inspect. + * @returns {Array|Object} Returns the cast array-like object. + */ + function castArrayLikeObject(value) { + return isArrayLikeObject(value) ? value : []; + } + + /** + * Casts `value` to `identity` if it's not a function. + * + * @private + * @param {*} value The value to inspect. + * @returns {Function} Returns cast function. + */ + function castFunction(value) { + return typeof value == 'function' ? value : identity; + } + + /** + * Casts `value` to a path array if it's not one. + * + * @private + * @param {*} value The value to inspect. + * @param {Object} [object] The object to query keys on. + * @returns {Array} Returns the cast property path array. + */ + function castPath(value, object) { + if (isArray(value)) { + return value; + } + return isKey(value, object) ? [value] : stringToPath(toString(value)); + } + + /** + * A `baseRest` alias which can be replaced with `identity` by module + * replacement plugins. + * + * @private + * @type {Function} + * @param {Function} func The function to apply a rest parameter to. + * @returns {Function} Returns the new function. + */ + var castRest = baseRest; + + /** + * Casts `array` to a slice if it's needed. + * + * @private + * @param {Array} array The array to inspect. + * @param {number} start The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the cast slice. + */ + function castSlice(array, start, end) { + var length = array.length; + end = end === undefined ? length : end; + return !start && end >= length ? array : baseSlice(array, start, end); + } + + /** + * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout). + * + * @private + * @param {number|Object} id The timer id or timeout object of the timer to clear. + */ + var clearTimeout = + ctxClearTimeout || + function (id) { + return root.clearTimeout(id); + }; + + /** + * Creates a clone of `buffer`. + * + * @private + * @param {Buffer} buffer The buffer to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Buffer} Returns the cloned buffer. + */ + function cloneBuffer(buffer, isDeep) { + if (isDeep) { + return buffer.slice(); + } + var length = buffer.length, + result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length); + + buffer.copy(result); + return result; + } + + /** + * Creates a clone of `arrayBuffer`. + * + * @private + * @param {ArrayBuffer} arrayBuffer The array buffer to clone. + * @returns {ArrayBuffer} Returns the cloned array buffer. + */ + function cloneArrayBuffer(arrayBuffer) { + var result = new arrayBuffer.constructor(arrayBuffer.byteLength); + new Uint8Array(result).set(new Uint8Array(arrayBuffer)); + return result; + } + + /** + * Creates a clone of `dataView`. + * + * @private + * @param {Object} dataView The data view to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned data view. + */ + function cloneDataView(dataView, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer; + return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength); + } + + /** + * Creates a clone of `regexp`. + * + * @private + * @param {Object} regexp The regexp to clone. + * @returns {Object} Returns the cloned regexp. + */ + function cloneRegExp(regexp) { + var result = new regexp.constructor(regexp.source, reFlags.exec(regexp)); + result.lastIndex = regexp.lastIndex; + return result; + } + + /** + * Creates a clone of the `symbol` object. + * + * @private + * @param {Object} symbol The symbol object to clone. + * @returns {Object} Returns the cloned symbol object. + */ + function cloneSymbol(symbol) { + return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {}; + } + + /** + * Creates a clone of `typedArray`. + * + * @private + * @param {Object} typedArray The typed array to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned typed array. + */ + function cloneTypedArray(typedArray, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer; + return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length); + } + + /** + * Compares values to sort them in ascending order. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {number} Returns the sort order indicator for `value`. + */ + function compareAscending(value, other) { + if (value !== other) { + var valIsDefined = value !== undefined, + valIsNull = value === null, + valIsReflexive = value === value, + valIsSymbol = isSymbol(value); + + var othIsDefined = other !== undefined, + othIsNull = other === null, + othIsReflexive = other === other, + othIsSymbol = isSymbol(other); + + if ( + (!othIsNull && !othIsSymbol && !valIsSymbol && value > other) || + (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) || + (valIsNull && othIsDefined && othIsReflexive) || + (!valIsDefined && othIsReflexive) || + !valIsReflexive + ) { + return 1; + } + if ( + (!valIsNull && !valIsSymbol && !othIsSymbol && value < other) || + (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) || + (othIsNull && valIsDefined && valIsReflexive) || + (!othIsDefined && valIsReflexive) || + !othIsReflexive + ) { + return -1; + } + } + return 0; + } + + /** + * Used by `_.orderBy` to compare multiple properties of a value to another + * and stable sort them. + * + * If `orders` is unspecified, all values are sorted in ascending order. Otherwise, + * specify an order of "desc" for descending or "asc" for ascending sort order + * of corresponding values. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {boolean[]|string[]} orders The order to sort by for each property. + * @returns {number} Returns the sort order indicator for `object`. + */ + function compareMultiple(object, other, orders) { + var index = -1, + objCriteria = object.criteria, + othCriteria = other.criteria, + length = objCriteria.length, + ordersLength = orders.length; + + while (++index < length) { + var result = compareAscending(objCriteria[index], othCriteria[index]); + if (result) { + if (index >= ordersLength) { + return result; + } + var order = orders[index]; + return result * (order == 'desc' ? -1 : 1); + } + } + // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications + // that causes it, under certain circumstances, to provide the same value for + // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247 + // for more details. + // + // This also ensures a stable sort in V8 and other engines. + // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details. + return object.index - other.index; + } + + /** + * Creates an array that is the composition of partially applied arguments, + * placeholders, and provided arguments into a single array of arguments. + * + * @private + * @param {Array} args The provided arguments. + * @param {Array} partials The arguments to prepend to those provided. + * @param {Array} holders The `partials` placeholder indexes. + * @params {boolean} [isCurried] Specify composing for a curried function. + * @returns {Array} Returns the new array of composed arguments. + */ + function composeArgs(args, partials, holders, isCurried) { + var argsIndex = -1, + argsLength = args.length, + holdersLength = holders.length, + leftIndex = -1, + leftLength = partials.length, + rangeLength = nativeMax(argsLength - holdersLength, 0), + result = Array(leftLength + rangeLength), + isUncurried = !isCurried; + + while (++leftIndex < leftLength) { + result[leftIndex] = partials[leftIndex]; + } + while (++argsIndex < holdersLength) { + if (isUncurried || argsIndex < argsLength) { + result[holders[argsIndex]] = args[argsIndex]; + } + } + while (rangeLength--) { + result[leftIndex++] = args[argsIndex++]; + } + return result; + } + + /** + * This function is like `composeArgs` except that the arguments composition + * is tailored for `_.partialRight`. + * + * @private + * @param {Array} args The provided arguments. + * @param {Array} partials The arguments to append to those provided. + * @param {Array} holders The `partials` placeholder indexes. + * @params {boolean} [isCurried] Specify composing for a curried function. + * @returns {Array} Returns the new array of composed arguments. + */ + function composeArgsRight(args, partials, holders, isCurried) { + var argsIndex = -1, + argsLength = args.length, + holdersIndex = -1, + holdersLength = holders.length, + rightIndex = -1, + rightLength = partials.length, + rangeLength = nativeMax(argsLength - holdersLength, 0), + result = Array(rangeLength + rightLength), + isUncurried = !isCurried; + + while (++argsIndex < rangeLength) { + result[argsIndex] = args[argsIndex]; + } + var offset = argsIndex; + while (++rightIndex < rightLength) { + result[offset + rightIndex] = partials[rightIndex]; + } + while (++holdersIndex < holdersLength) { + if (isUncurried || argsIndex < argsLength) { + result[offset + holders[holdersIndex]] = args[argsIndex++]; + } + } + return result; + } + + /** + * Copies the values of `source` to `array`. + * + * @private + * @param {Array} source The array to copy values from. + * @param {Array} [array=[]] The array to copy values to. + * @returns {Array} Returns `array`. + */ + function copyArray(source, array) { + var index = -1, + length = source.length; + + array || (array = Array(length)); + while (++index < length) { + array[index] = source[index]; + } + return array; + } + + /** + * Copies properties of `source` to `object`. + * + * @private + * @param {Object} source The object to copy properties from. + * @param {Array} props The property identifiers to copy. + * @param {Object} [object={}] The object to copy properties to. + * @param {Function} [customizer] The function to customize copied values. + * @returns {Object} Returns `object`. + */ + function copyObject(source, props, object, customizer) { + var isNew = !object; + object || (object = {}); + + var index = -1, + length = props.length; + + while (++index < length) { + var key = props[index]; + + var newValue = customizer + ? customizer(object[key], source[key], key, object, source) + : undefined; + + if (newValue === undefined) { + newValue = source[key]; + } + if (isNew) { + baseAssignValue(object, key, newValue); + } else { + assignValue(object, key, newValue); + } + } + return object; + } + + /** + * Copies own symbols of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbols(source, object) { + return copyObject(source, getSymbols(source), object); + } + + /** + * Copies own and inherited symbols of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbolsIn(source, object) { + return copyObject(source, getSymbolsIn(source), object); + } + + /** + * Creates a function like `_.groupBy`. + * + * @private + * @param {Function} setter The function to set accumulator values. + * @param {Function} [initializer] The accumulator object initializer. + * @returns {Function} Returns the new aggregator function. + */ + function createAggregator(setter, initializer) { + return function (collection, iteratee) { + var func = isArray(collection) ? arrayAggregator : baseAggregator, + accumulator = initializer ? initializer() : {}; + + return func(collection, setter, getIteratee(iteratee, 2), accumulator); + }; + } + + /** + * Creates a function like `_.assign`. + * + * @private + * @param {Function} assigner The function to assign values. + * @returns {Function} Returns the new assigner function. + */ + function createAssigner(assigner) { + return baseRest(function (object, sources) { + var index = -1, + length = sources.length, + customizer = length > 1 ? sources[length - 1] : undefined, + guard = length > 2 ? sources[2] : undefined; + + customizer = + assigner.length > 3 && typeof customizer == 'function' ? (length--, customizer) : undefined; + + if (guard && isIterateeCall(sources[0], sources[1], guard)) { + customizer = length < 3 ? undefined : customizer; + length = 1; + } + object = Object(object); + while (++index < length) { + var source = sources[index]; + if (source) { + assigner(object, source, index, customizer); + } + } + return object; + }); + } + + /** + * Creates a `baseEach` or `baseEachRight` function. + * + * @private + * @param {Function} eachFunc The function to iterate over a collection. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseEach(eachFunc, fromRight) { + return function (collection, iteratee) { + if (collection == null) { + return collection; + } + if (!isArrayLike(collection)) { + return eachFunc(collection, iteratee); + } + var length = collection.length, + index = fromRight ? length : -1, + iterable = Object(collection); + + while (fromRight ? index-- : ++index < length) { + if (iteratee(iterable[index], index, iterable) === false) { + break; + } + } + return collection; + }; + } + + /** + * Creates a base function for methods like `_.forIn` and `_.forOwn`. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseFor(fromRight) { + return function (object, iteratee, keysFunc) { + var index = -1, + iterable = Object(object), + props = keysFunc(object), + length = props.length; + + while (length--) { + var key = props[fromRight ? length : ++index]; + if (iteratee(iterable[key], key, iterable) === false) { + break; + } + } + return object; + }; + } + + /** + * Creates a function that wraps `func` to invoke it with the optional `this` + * binding of `thisArg`. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} [thisArg] The `this` binding of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createBind(func, bitmask, thisArg) { + var isBind = bitmask & WRAP_BIND_FLAG, + Ctor = createCtor(func); + + function wrapper() { + var fn = this && this !== root && this instanceof wrapper ? Ctor : func; + return fn.apply(isBind ? thisArg : this, arguments); + } + return wrapper; + } + + /** + * Creates a function like `_.lowerFirst`. + * + * @private + * @param {string} methodName The name of the `String` case method to use. + * @returns {Function} Returns the new case function. + */ + function createCaseFirst(methodName) { + return function (string) { + string = toString(string); + + var strSymbols = hasUnicode(string) ? stringToArray(string) : undefined; + + var chr = strSymbols ? strSymbols[0] : string.charAt(0); + + var trailing = strSymbols ? castSlice(strSymbols, 1).join('') : string.slice(1); + + return chr[methodName]() + trailing; + }; + } + + /** + * Creates a function like `_.camelCase`. + * + * @private + * @param {Function} callback The function to combine each word. + * @returns {Function} Returns the new compounder function. + */ + function createCompounder(callback) { + return function (string) { + return arrayReduce(words(deburr(string).replace(reApos, '')), callback, ''); + }; + } + + /** + * Creates a function that produces an instance of `Ctor` regardless of + * whether it was invoked as part of a `new` expression or by `call` or `apply`. + * + * @private + * @param {Function} Ctor The constructor to wrap. + * @returns {Function} Returns the new wrapped function. + */ + function createCtor(Ctor) { + return function () { + // Use a `switch` statement to work with class constructors. See + // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist + // for more details. + var args = arguments; + switch (args.length) { + case 0: + return new Ctor(); + case 1: + return new Ctor(args[0]); + case 2: + return new Ctor(args[0], args[1]); + case 3: + return new Ctor(args[0], args[1], args[2]); + case 4: + return new Ctor(args[0], args[1], args[2], args[3]); + case 5: + return new Ctor(args[0], args[1], args[2], args[3], args[4]); + case 6: + return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]); + case 7: + return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]); + } + var thisBinding = baseCreate(Ctor.prototype), + result = Ctor.apply(thisBinding, args); + + // Mimic the constructor's `return` behavior. + // See https://es5.github.io/#x13.2.2 for more details. + return isObject(result) ? result : thisBinding; + }; + } + + /** + * Creates a function that wraps `func` to enable currying. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {number} arity The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createCurry(func, bitmask, arity) { + var Ctor = createCtor(func); + + function wrapper() { + var length = arguments.length, + args = Array(length), + index = length, + placeholder = getHolder(wrapper); + + while (index--) { + args[index] = arguments[index]; + } + var holders = + length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder + ? [] + : replaceHolders(args, placeholder); + + length -= holders.length; + if (length < arity) { + return createRecurry( + func, + bitmask, + createHybrid, + wrapper.placeholder, + undefined, + args, + holders, + undefined, + undefined, + arity - length + ); + } + var fn = this && this !== root && this instanceof wrapper ? Ctor : func; + return apply(fn, this, args); + } + return wrapper; + } + + /** + * Creates a `_.find` or `_.findLast` function. + * + * @private + * @param {Function} findIndexFunc The function to find the collection index. + * @returns {Function} Returns the new find function. + */ + function createFind(findIndexFunc) { + return function (collection, predicate, fromIndex) { + var iterable = Object(collection); + if (!isArrayLike(collection)) { + var iteratee = getIteratee(predicate, 3); + collection = keys(collection); + predicate = function (key) { + return iteratee(iterable[key], key, iterable); + }; + } + var index = findIndexFunc(collection, predicate, fromIndex); + return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined; + }; + } + + /** + * Creates a `_.flow` or `_.flowRight` function. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new flow function. + */ + function createFlow(fromRight) { + return flatRest(function (funcs) { + var length = funcs.length, + index = length, + prereq = LodashWrapper.prototype.thru; + + if (fromRight) { + funcs.reverse(); + } + while (index--) { + var func = funcs[index]; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + if (prereq && !wrapper && getFuncName(func) == 'wrapper') { + var wrapper = new LodashWrapper([], true); + } + } + index = wrapper ? index : length; + while (++index < length) { + func = funcs[index]; + + var funcName = getFuncName(func), + data = funcName == 'wrapper' ? getData(func) : undefined; + + if ( + data && + isLaziable(data[0]) && + data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) && + !data[4].length && + data[9] == 1 + ) { + wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]); + } else { + wrapper = func.length == 1 && isLaziable(func) ? wrapper[funcName]() : wrapper.thru(func); + } + } + return function () { + var args = arguments, + value = args[0]; + + if (wrapper && args.length == 1 && isArray(value)) { + return wrapper.plant(value).value(); + } + var index = 0, + result = length ? funcs[index].apply(this, args) : value; + + while (++index < length) { + result = funcs[index].call(this, result); + } + return result; + }; + }); + } + + /** + * Creates a function that wraps `func` to invoke it with optional `this` + * binding of `thisArg`, partial application, and currying. + * + * @private + * @param {Function|string} func The function or method name to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to prepend to those provided to + * the new function. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [partialsRight] The arguments to append to those provided + * to the new function. + * @param {Array} [holdersRight] The `partialsRight` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createHybrid( + func, + bitmask, + thisArg, + partials, + holders, + partialsRight, + holdersRight, + argPos, + ary, + arity + ) { + var isAry = bitmask & WRAP_ARY_FLAG, + isBind = bitmask & WRAP_BIND_FLAG, + isBindKey = bitmask & WRAP_BIND_KEY_FLAG, + isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG), + isFlip = bitmask & WRAP_FLIP_FLAG, + Ctor = isBindKey ? undefined : createCtor(func); + + function wrapper() { + var length = arguments.length, + args = Array(length), + index = length; + + while (index--) { + args[index] = arguments[index]; + } + if (isCurried) { + var placeholder = getHolder(wrapper), + holdersCount = countHolders(args, placeholder); + } + if (partials) { + args = composeArgs(args, partials, holders, isCurried); + } + if (partialsRight) { + args = composeArgsRight(args, partialsRight, holdersRight, isCurried); + } + length -= holdersCount; + if (isCurried && length < arity) { + var newHolders = replaceHolders(args, placeholder); + return createRecurry( + func, + bitmask, + createHybrid, + wrapper.placeholder, + thisArg, + args, + newHolders, + argPos, + ary, + arity - length + ); + } + var thisBinding = isBind ? thisArg : this, + fn = isBindKey ? thisBinding[func] : func; + + length = args.length; + if (argPos) { + args = reorder(args, argPos); + } else if (isFlip && length > 1) { + args.reverse(); + } + if (isAry && ary < length) { + args.length = ary; + } + if (this && this !== root && this instanceof wrapper) { + fn = Ctor || createCtor(fn); + } + return fn.apply(thisBinding, args); + } + return wrapper; + } + + /** + * Creates a function like `_.invertBy`. + * + * @private + * @param {Function} setter The function to set accumulator values. + * @param {Function} toIteratee The function to resolve iteratees. + * @returns {Function} Returns the new inverter function. + */ + function createInverter(setter, toIteratee) { + return function (object, iteratee) { + return baseInverter(object, setter, toIteratee(iteratee), {}); + }; + } + + /** + * Creates a function that performs a mathematical operation on two values. + * + * @private + * @param {Function} operator The function to perform the operation. + * @param {number} [defaultValue] The value used for `undefined` arguments. + * @returns {Function} Returns the new mathematical operation function. + */ + function createMathOperation(operator, defaultValue) { + return function (value, other) { + var result; + if (value === undefined && other === undefined) { + return defaultValue; + } + if (value !== undefined) { + result = value; + } + if (other !== undefined) { + if (result === undefined) { + return other; + } + if (typeof value == 'string' || typeof other == 'string') { + value = baseToString(value); + other = baseToString(other); + } else { + value = baseToNumber(value); + other = baseToNumber(other); + } + result = operator(value, other); + } + return result; + }; + } + + /** + * Creates a function like `_.over`. + * + * @private + * @param {Function} arrayFunc The function to iterate over iteratees. + * @returns {Function} Returns the new over function. + */ + function createOver(arrayFunc) { + return flatRest(function (iteratees) { + iteratees = arrayMap(iteratees, baseUnary(getIteratee())); + return baseRest(function (args) { + var thisArg = this; + return arrayFunc(iteratees, function (iteratee) { + return apply(iteratee, thisArg, args); + }); + }); + }); + } + + /** + * Creates the padding for `string` based on `length`. The `chars` string + * is truncated if the number of characters exceeds `length`. + * + * @private + * @param {number} length The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padding for `string`. + */ + function createPadding(length, chars) { + chars = chars === undefined ? ' ' : baseToString(chars); + + var charsLength = chars.length; + if (charsLength < 2) { + return charsLength ? baseRepeat(chars, length) : chars; + } + var result = baseRepeat(chars, nativeCeil(length / stringSize(chars))); + return hasUnicode(chars) + ? castSlice(stringToArray(result), 0, length).join('') + : result.slice(0, length); + } + + /** + * Creates a function that wraps `func` to invoke it with the `this` binding + * of `thisArg` and `partials` prepended to the arguments it receives. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} thisArg The `this` binding of `func`. + * @param {Array} partials The arguments to prepend to those provided to + * the new function. + * @returns {Function} Returns the new wrapped function. + */ + function createPartial(func, bitmask, thisArg, partials) { + var isBind = bitmask & WRAP_BIND_FLAG, + Ctor = createCtor(func); + + function wrapper() { + var argsIndex = -1, + argsLength = arguments.length, + leftIndex = -1, + leftLength = partials.length, + args = Array(leftLength + argsLength), + fn = this && this !== root && this instanceof wrapper ? Ctor : func; + + while (++leftIndex < leftLength) { + args[leftIndex] = partials[leftIndex]; + } + while (argsLength--) { + args[leftIndex++] = arguments[++argsIndex]; + } + return apply(fn, isBind ? thisArg : this, args); + } + return wrapper; + } + + /** + * Creates a `_.range` or `_.rangeRight` function. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new range function. + */ + function createRange(fromRight) { + return function (start, end, step) { + if (step && typeof step != 'number' && isIterateeCall(start, end, step)) { + end = step = undefined; + } + // Ensure the sign of `-0` is preserved. + start = toFinite(start); + if (end === undefined) { + end = start; + start = 0; + } else { + end = toFinite(end); + } + step = step === undefined ? (start < end ? 1 : -1) : toFinite(step); + return baseRange(start, end, step, fromRight); + }; + } + + /** + * Creates a function that performs a relational operation on two values. + * + * @private + * @param {Function} operator The function to perform the operation. + * @returns {Function} Returns the new relational operation function. + */ + function createRelationalOperation(operator) { + return function (value, other) { + if (!(typeof value == 'string' && typeof other == 'string')) { + value = toNumber(value); + other = toNumber(other); + } + return operator(value, other); + }; + } + + /** + * Creates a function that wraps `func` to continue currying. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {Function} wrapFunc The function to create the `func` wrapper. + * @param {*} placeholder The placeholder value. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to prepend to those provided to + * the new function. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createRecurry( + func, + bitmask, + wrapFunc, + placeholder, + thisArg, + partials, + holders, + argPos, + ary, + arity + ) { + var isCurry = bitmask & WRAP_CURRY_FLAG, + newHolders = isCurry ? holders : undefined, + newHoldersRight = isCurry ? undefined : holders, + newPartials = isCurry ? partials : undefined, + newPartialsRight = isCurry ? undefined : partials; + + bitmask |= isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG; + bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG); + + if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) { + bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG); + } + var newData = [ + func, + bitmask, + thisArg, + newPartials, + newHolders, + newPartialsRight, + newHoldersRight, + argPos, + ary, + arity, + ]; + + var result = wrapFunc.apply(undefined, newData); + if (isLaziable(func)) { + setData(result, newData); + } + result.placeholder = placeholder; + return setWrapToString(result, func, bitmask); + } + + /** + * Creates a function like `_.round`. + * + * @private + * @param {string} methodName The name of the `Math` method to use when rounding. + * @returns {Function} Returns the new round function. + */ + function createRound(methodName) { + var func = Math[methodName]; + return function (number, precision) { + number = toNumber(number); + precision = precision == null ? 0 : nativeMin(toInteger(precision), 292); + if (precision) { + // Shift with exponential notation to avoid floating-point issues. + // See [MDN](https://mdn.io/round#Examples) for more details. + var pair = (toString(number) + 'e').split('e'), + value = func(pair[0] + 'e' + (+pair[1] + precision)); + + pair = (toString(value) + 'e').split('e'); + return +(pair[0] + 'e' + (+pair[1] - precision)); + } + return func(number); + }; + } + + /** + * Creates a set object of `values`. + * + * @private + * @param {Array} values The values to add to the set. + * @returns {Object} Returns the new set. + */ + var createSet = !(Set && 1 / setToArray(new Set([, -0]))[1] == INFINITY) + ? noop + : function (values) { + return new Set(values); + }; + + /** + * Creates a `_.toPairs` or `_.toPairsIn` function. + * + * @private + * @param {Function} keysFunc The function to get the keys of a given object. + * @returns {Function} Returns the new pairs function. + */ + function createToPairs(keysFunc) { + return function (object) { + var tag = getTag(object); + if (tag == mapTag) { + return mapToArray(object); + } + if (tag == setTag) { + return setToPairs(object); + } + return baseToPairs(object, keysFunc(object)); + }; + } + + /** + * Creates a function that either curries or invokes `func` with optional + * `this` binding and partially applied arguments. + * + * @private + * @param {Function|string} func The function or method name to wrap. + * @param {number} bitmask The bitmask flags. + * 1 - `_.bind` + * 2 - `_.bindKey` + * 4 - `_.curry` or `_.curryRight` of a bound function + * 8 - `_.curry` + * 16 - `_.curryRight` + * 32 - `_.partial` + * 64 - `_.partialRight` + * 128 - `_.rearg` + * 256 - `_.ary` + * 512 - `_.flip` + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to be partially applied. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) { + var isBindKey = bitmask & WRAP_BIND_KEY_FLAG; + if (!isBindKey && typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + var length = partials ? partials.length : 0; + if (!length) { + bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG); + partials = holders = undefined; + } + ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0); + arity = arity === undefined ? arity : toInteger(arity); + length -= holders ? holders.length : 0; + + if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) { + var partialsRight = partials, + holdersRight = holders; + + partials = holders = undefined; + } + var data = isBindKey ? undefined : getData(func); + + var newData = [ + func, + bitmask, + thisArg, + partials, + holders, + partialsRight, + holdersRight, + argPos, + ary, + arity, + ]; + + if (data) { + mergeData(newData, data); + } + func = newData[0]; + bitmask = newData[1]; + thisArg = newData[2]; + partials = newData[3]; + holders = newData[4]; + arity = newData[9] = + newData[9] === undefined ? (isBindKey ? 0 : func.length) : nativeMax(newData[9] - length, 0); + + if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) { + bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG); + } + if (!bitmask || bitmask == WRAP_BIND_FLAG) { + var result = createBind(func, bitmask, thisArg); + } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) { + result = createCurry(func, bitmask, arity); + } else if ( + (bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && + !holders.length + ) { + result = createPartial(func, bitmask, thisArg, partials); + } else { + result = createHybrid.apply(undefined, newData); + } + var setter = data ? baseSetData : setData; + return setWrapToString(setter(result, newData), func, bitmask); + } + + /** + * Used by `_.defaults` to customize its `_.assignIn` use to assign properties + * of source objects to the destination object for all destination properties + * that resolve to `undefined`. + * + * @private + * @param {*} objValue The destination value. + * @param {*} srcValue The source value. + * @param {string} key The key of the property to assign. + * @param {Object} object The parent object of `objValue`. + * @returns {*} Returns the value to assign. + */ + function customDefaultsAssignIn(objValue, srcValue, key, object) { + if ( + objValue === undefined || + (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key)) + ) { + return srcValue; + } + return objValue; + } + + /** + * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source + * objects into destination objects that are passed thru. + * + * @private + * @param {*} objValue The destination value. + * @param {*} srcValue The source value. + * @param {string} key The key of the property to merge. + * @param {Object} object The parent object of `objValue`. + * @param {Object} source The parent object of `srcValue`. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + * @returns {*} Returns the value to assign. + */ + function customDefaultsMerge(objValue, srcValue, key, object, source, stack) { + if (isObject(objValue) && isObject(srcValue)) { + // Recursively merge objects and arrays (susceptible to call stack limits). + stack.set(srcValue, objValue); + baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack); + stack['delete'](srcValue); + } + return objValue; + } + + /** + * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain + * objects. + * + * @private + * @param {*} value The value to inspect. + * @param {string} key The key of the property to inspect. + * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`. + */ + function customOmitClone(value) { + return isPlainObject(value) ? undefined : value; + } + + /** + * A specialized version of `baseIsEqualDeep` for arrays with support for + * partial deep comparisons. + * + * @private + * @param {Array} array The array to compare. + * @param {Array} other The other array to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `array` and `other` objects. + * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`. + */ + function equalArrays(array, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + arrLength = array.length, + othLength = other.length; + + if (arrLength != othLength && !(isPartial && othLength > arrLength)) { + return false; + } + // Assume cyclic values are equal. + var stacked = stack.get(array); + if (stacked && stack.get(other)) { + return stacked == other; + } + var index = -1, + result = true, + seen = bitmask & COMPARE_UNORDERED_FLAG ? new SetCache() : undefined; + + stack.set(array, other); + stack.set(other, array); + + // Ignore non-index properties. + while (++index < arrLength) { + var arrValue = array[index], + othValue = other[index]; + + if (customizer) { + var compared = isPartial + ? customizer(othValue, arrValue, index, other, array, stack) + : customizer(arrValue, othValue, index, array, other, stack); + } + if (compared !== undefined) { + if (compared) { + continue; + } + result = false; + break; + } + // Recursively compare arrays (susceptible to call stack limits). + if (seen) { + if ( + !arraySome(other, function (othValue, othIndex) { + if ( + !cacheHas(seen, othIndex) && + (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack)) + ) { + return seen.push(othIndex); + } + }) + ) { + result = false; + break; + } + } else if ( + !(arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack)) + ) { + result = false; + break; + } + } + stack['delete'](array); + stack['delete'](other); + return result; + } + + /** + * A specialized version of `baseIsEqualDeep` for comparing objects of + * the same `toStringTag`. + * + * **Note:** This function only supports comparing values with tags of + * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {string} tag The `toStringTag` of the objects to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) { + switch (tag) { + case dataViewTag: + if (object.byteLength != other.byteLength || object.byteOffset != other.byteOffset) { + return false; + } + object = object.buffer; + other = other.buffer; + + case arrayBufferTag: + if ( + object.byteLength != other.byteLength || + !equalFunc(new Uint8Array(object), new Uint8Array(other)) + ) { + return false; + } + return true; + + case boolTag: + case dateTag: + case numberTag: + // Coerce booleans to `1` or `0` and dates to milliseconds. + // Invalid dates are coerced to `NaN`. + return eq(+object, +other); + + case errorTag: + return object.name == other.name && object.message == other.message; + + case regexpTag: + case stringTag: + // Coerce regexes to strings and treat strings, primitives and objects, + // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring + // for more details. + return object == other + ''; + + case mapTag: + var convert = mapToArray; + + case setTag: + var isPartial = bitmask & COMPARE_PARTIAL_FLAG; + convert || (convert = setToArray); + + if (object.size != other.size && !isPartial) { + return false; + } + // Assume cyclic values are equal. + var stacked = stack.get(object); + if (stacked) { + return stacked == other; + } + bitmask |= COMPARE_UNORDERED_FLAG; + + // Recursively compare objects (susceptible to call stack limits). + stack.set(object, other); + var result = equalArrays( + convert(object), + convert(other), + bitmask, + customizer, + equalFunc, + stack + ); + stack['delete'](object); + return result; + + case symbolTag: + if (symbolValueOf) { + return symbolValueOf.call(object) == symbolValueOf.call(other); + } + } + return false; + } + + /** + * A specialized version of `baseIsEqualDeep` for objects with support for + * partial deep comparisons. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function equalObjects(object, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + objProps = getAllKeys(object), + objLength = objProps.length, + othProps = getAllKeys(other), + othLength = othProps.length; + + if (objLength != othLength && !isPartial) { + return false; + } + var index = objLength; + while (index--) { + var key = objProps[index]; + if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) { + return false; + } + } + // Assume cyclic values are equal. + var stacked = stack.get(object); + if (stacked && stack.get(other)) { + return stacked == other; + } + var result = true; + stack.set(object, other); + stack.set(other, object); + + var skipCtor = isPartial; + while (++index < objLength) { + key = objProps[index]; + var objValue = object[key], + othValue = other[key]; + + if (customizer) { + var compared = isPartial + ? customizer(othValue, objValue, key, other, object, stack) + : customizer(objValue, othValue, key, object, other, stack); + } + // Recursively compare objects (susceptible to call stack limits). + if ( + !(compared === undefined + ? objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack) + : compared) + ) { + result = false; + break; + } + skipCtor || (skipCtor = key == 'constructor'); + } + if (result && !skipCtor) { + var objCtor = object.constructor, + othCtor = other.constructor; + + // Non `Object` object instances with different constructors are not equal. + if ( + objCtor != othCtor && + 'constructor' in object && + 'constructor' in other && + !( + typeof objCtor == 'function' && + objCtor instanceof objCtor && + typeof othCtor == 'function' && + othCtor instanceof othCtor + ) + ) { + result = false; + } + } + stack['delete'](object); + stack['delete'](other); + return result; + } + + /** + * A specialized version of `baseRest` which flattens the rest array. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @returns {Function} Returns the new function. + */ + function flatRest(func) { + return setToString(overRest(func, undefined, flatten), func + ''); + } + + /** + * Creates an array of own enumerable property names and symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names and symbols. + */ + function getAllKeys(object) { + return baseGetAllKeys(object, keys, getSymbols); + } + + /** + * Creates an array of own and inherited enumerable property names and + * symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names and symbols. + */ + function getAllKeysIn(object) { + return baseGetAllKeys(object, keysIn, getSymbolsIn); + } + + /** + * Gets metadata for `func`. + * + * @private + * @param {Function} func The function to query. + * @returns {*} Returns the metadata for `func`. + */ + var getData = !metaMap + ? noop + : function (func) { + return metaMap.get(func); + }; + + /** + * Gets the name of `func`. + * + * @private + * @param {Function} func The function to query. + * @returns {string} Returns the function name. + */ + function getFuncName(func) { + var result = func.name + '', + array = realNames[result], + length = hasOwnProperty.call(realNames, result) ? array.length : 0; + + while (length--) { + var data = array[length], + otherFunc = data.func; + if (otherFunc == null || otherFunc == func) { + return data.name; + } + } + return result; + } + + /** + * Gets the argument placeholder value for `func`. + * + * @private + * @param {Function} func The function to inspect. + * @returns {*} Returns the placeholder value. + */ + function getHolder(func) { + var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func; + return object.placeholder; + } + + /** + * Gets the appropriate "iteratee" function. If `_.iteratee` is customized, + * this function returns the custom method, otherwise it returns `baseIteratee`. + * If arguments are provided, the chosen function is invoked with them and + * its result is returned. + * + * @private + * @param {*} [value] The value to convert to an iteratee. + * @param {number} [arity] The arity of the created iteratee. + * @returns {Function} Returns the chosen function or its result. + */ + function getIteratee() { + var result = lodash.iteratee || iteratee; + result = result === iteratee ? baseIteratee : result; + return arguments.length ? result(arguments[0], arguments[1]) : result; + } + + /** + * Gets the data for `map`. + * + * @private + * @param {Object} map The map to query. + * @param {string} key The reference key. + * @returns {*} Returns the map data. + */ + function getMapData(map, key) { + var data = map.__data__; + return isKeyable(key) ? data[typeof key == 'string' ? 'string' : 'hash'] : data.map; + } + + /** + * Gets the property names, values, and compare flags of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the match data of `object`. + */ + function getMatchData(object) { + var result = keys(object), + length = result.length; + + while (length--) { + var key = result[length], + value = object[key]; + + result[length] = [key, value, isStrictComparable(value)]; + } + return result; + } + + /** + * Gets the native function at `key` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the method to get. + * @returns {*} Returns the function if it's native, else `undefined`. + */ + function getNative(object, key) { + var value = getValue(object, key); + return baseIsNative(value) ? value : undefined; + } + + /** + * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the raw `toStringTag`. + */ + function getRawTag(value) { + var isOwn = hasOwnProperty.call(value, symToStringTag), + tag = value[symToStringTag]; + + try { + value[symToStringTag] = undefined; + var unmasked = true; + } catch (e) {} + + var result = nativeObjectToString.call(value); + if (unmasked) { + if (isOwn) { + value[symToStringTag] = tag; + } else { + delete value[symToStringTag]; + } + } + return result; + } + + /** + * Creates an array of the own enumerable symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbols = !nativeGetSymbols + ? stubArray + : function (object) { + if (object == null) { + return []; + } + object = Object(object); + return arrayFilter(nativeGetSymbols(object), function (symbol) { + return propertyIsEnumerable.call(object, symbol); + }); + }; + + /** + * Creates an array of the own and inherited enumerable symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbolsIn = !nativeGetSymbols + ? stubArray + : function (object) { + var result = []; + while (object) { + arrayPush(result, getSymbols(object)); + object = getPrototype(object); + } + return result; + }; + + /** + * Gets the `toStringTag` of `value`. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + var getTag = baseGetTag; + + // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6. + if ( + (DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) || + (Map && getTag(new Map()) != mapTag) || + (Promise && getTag(Promise.resolve()) != promiseTag) || + (Set && getTag(new Set()) != setTag) || + (WeakMap && getTag(new WeakMap()) != weakMapTag) + ) { + getTag = function (value) { + var result = baseGetTag(value), + Ctor = result == objectTag ? value.constructor : undefined, + ctorString = Ctor ? toSource(Ctor) : ''; + + if (ctorString) { + switch (ctorString) { + case dataViewCtorString: + return dataViewTag; + case mapCtorString: + return mapTag; + case promiseCtorString: + return promiseTag; + case setCtorString: + return setTag; + case weakMapCtorString: + return weakMapTag; + } + } + return result; + }; + } + + /** + * Gets the view, applying any `transforms` to the `start` and `end` positions. + * + * @private + * @param {number} start The start of the view. + * @param {number} end The end of the view. + * @param {Array} transforms The transformations to apply to the view. + * @returns {Object} Returns an object containing the `start` and `end` + * positions of the view. + */ + function getView(start, end, transforms) { + var index = -1, + length = transforms.length; + + while (++index < length) { + var data = transforms[index], + size = data.size; + + switch (data.type) { + case 'drop': + start += size; + break; + case 'dropRight': + end -= size; + break; + case 'take': + end = nativeMin(end, start + size); + break; + case 'takeRight': + start = nativeMax(start, end - size); + break; + } + } + return { start: start, end: end }; + } + + /** + * Extracts wrapper details from the `source` body comment. + * + * @private + * @param {string} source The source to inspect. + * @returns {Array} Returns the wrapper details. + */ + function getWrapDetails(source) { + var match = source.match(reWrapDetails); + return match ? match[1].split(reSplitDetails) : []; + } + + /** + * Checks if `path` exists on `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @param {Function} hasFunc The function to check properties. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + */ + function hasPath(object, path, hasFunc) { + path = castPath(path, object); + + var index = -1, + length = path.length, + result = false; + + while (++index < length) { + var key = toKey(path[index]); + if (!(result = object != null && hasFunc(object, key))) { + break; + } + object = object[key]; + } + if (result || ++index != length) { + return result; + } + length = object == null ? 0 : object.length; + return ( + !!length && + isLength(length) && + isIndex(key, length) && + (isArray(object) || isArguments(object)) + ); + } + + /** + * Initializes an array clone. + * + * @private + * @param {Array} array The array to clone. + * @returns {Array} Returns the initialized clone. + */ + function initCloneArray(array) { + var length = array.length, + result = new array.constructor(length); + + // Add properties assigned by `RegExp#exec`. + if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) { + result.index = array.index; + result.input = array.input; + } + return result; + } + + /** + * Initializes an object clone. + * + * @private + * @param {Object} object The object to clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneObject(object) { + return typeof object.constructor == 'function' && !isPrototype(object) + ? baseCreate(getPrototype(object)) + : {}; + } + + /** + * Initializes an object clone based on its `toStringTag`. + * + * **Note:** This function only supports cloning values with tags of + * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`. + * + * @private + * @param {Object} object The object to clone. + * @param {string} tag The `toStringTag` of the object to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneByTag(object, tag, isDeep) { + var Ctor = object.constructor; + switch (tag) { + case arrayBufferTag: + return cloneArrayBuffer(object); + + case boolTag: + case dateTag: + return new Ctor(+object); + + case dataViewTag: + return cloneDataView(object, isDeep); + + case float32Tag: + case float64Tag: + case int8Tag: + case int16Tag: + case int32Tag: + case uint8Tag: + case uint8ClampedTag: + case uint16Tag: + case uint32Tag: + return cloneTypedArray(object, isDeep); + + case mapTag: + return new Ctor(); + + case numberTag: + case stringTag: + return new Ctor(object); + + case regexpTag: + return cloneRegExp(object); + + case setTag: + return new Ctor(); + + case symbolTag: + return cloneSymbol(object); + } + } + + /** + * Inserts wrapper `details` in a comment at the top of the `source` body. + * + * @private + * @param {string} source The source to modify. + * @returns {Array} details The details to insert. + * @returns {string} Returns the modified source. + */ + function insertWrapDetails(source, details) { + var length = details.length; + if (!length) { + return source; + } + var lastIndex = length - 1; + details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex]; + details = details.join(length > 2 ? ', ' : ' '); + return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n'); + } + + /** + * Checks if `value` is a flattenable `arguments` object or array. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is flattenable, else `false`. + */ + function isFlattenable(value) { + return ( + isArray(value) || + isArguments(value) || + !!(spreadableSymbol && value && value[spreadableSymbol]) + ); + } + + /** + * Checks if `value` is a valid array-like index. + * + * @private + * @param {*} value The value to check. + * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. + * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. + */ + function isIndex(value, length) { + var type = typeof value; + length = length == null ? MAX_SAFE_INTEGER : length; + + return ( + !!length && + (type == 'number' || (type != 'symbol' && reIsUint.test(value))) && + value > -1 && + value % 1 == 0 && + value < length + ); + } + + /** + * Checks if the given arguments are from an iteratee call. + * + * @private + * @param {*} value The potential iteratee value argument. + * @param {*} index The potential iteratee index or key argument. + * @param {*} object The potential iteratee object argument. + * @returns {boolean} Returns `true` if the arguments are from an iteratee call, + * else `false`. + */ + function isIterateeCall(value, index, object) { + if (!isObject(object)) { + return false; + } + var type = typeof index; + if ( + type == 'number' + ? isArrayLike(object) && isIndex(index, object.length) + : type == 'string' && index in object + ) { + return eq(object[index], value); + } + return false; + } + + /** + * Checks if `value` is a property name and not a property path. + * + * @private + * @param {*} value The value to check. + * @param {Object} [object] The object to query keys on. + * @returns {boolean} Returns `true` if `value` is a property name, else `false`. + */ + function isKey(value, object) { + if (isArray(value)) { + return false; + } + var type = typeof value; + if ( + type == 'number' || + type == 'symbol' || + type == 'boolean' || + value == null || + isSymbol(value) + ) { + return true; + } + return ( + reIsPlainProp.test(value) || + !reIsDeepProp.test(value) || + (object != null && value in Object(object)) + ); + } + + /** + * Checks if `value` is suitable for use as unique object key. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is suitable, else `false`. + */ + function isKeyable(value) { + var type = typeof value; + return type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean' + ? value !== '__proto__' + : value === null; + } + + /** + * Checks if `func` has a lazy counterpart. + * + * @private + * @param {Function} func The function to check. + * @returns {boolean} Returns `true` if `func` has a lazy counterpart, + * else `false`. + */ + function isLaziable(func) { + var funcName = getFuncName(func), + other = lodash[funcName]; + + if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) { + return false; + } + if (func === other) { + return true; + } + var data = getData(other); + return !!data && func === data[0]; + } + + /** + * Checks if `func` has its source masked. + * + * @private + * @param {Function} func The function to check. + * @returns {boolean} Returns `true` if `func` is masked, else `false`. + */ + function isMasked(func) { + return !!maskSrcKey && maskSrcKey in func; + } + + /** + * Checks if `func` is capable of being masked. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `func` is maskable, else `false`. + */ + var isMaskable = coreJsData ? isFunction : stubFalse; + + /** + * Checks if `value` is likely a prototype object. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a prototype, else `false`. + */ + function isPrototype(value) { + var Ctor = value && value.constructor, + proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto; + + return value === proto; + } + + /** + * Checks if `value` is suitable for strict equality comparisons, i.e. `===`. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` if suitable for strict + * equality comparisons, else `false`. + */ + function isStrictComparable(value) { + return value === value && !isObject(value); + } + + /** + * A specialized version of `matchesProperty` for source values suitable + * for strict equality comparisons, i.e. `===`. + * + * @private + * @param {string} key The key of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + */ + function matchesStrictComparable(key, srcValue) { + return function (object) { + if (object == null) { + return false; + } + return object[key] === srcValue && (srcValue !== undefined || key in Object(object)); + }; + } + + /** + * A specialized version of `_.memoize` which clears the memoized function's + * cache when it exceeds `MAX_MEMOIZE_SIZE`. + * + * @private + * @param {Function} func The function to have its output memoized. + * @returns {Function} Returns the new memoized function. + */ + function memoizeCapped(func) { + var result = memoize(func, function (key) { + if (cache.size === MAX_MEMOIZE_SIZE) { + cache.clear(); + } + return key; + }); + + var cache = result.cache; + return result; + } + + /** + * Merges the function metadata of `source` into `data`. + * + * Merging metadata reduces the number of wrappers used to invoke a function. + * This is possible because methods like `_.bind`, `_.curry`, and `_.partial` + * may be applied regardless of execution order. Methods like `_.ary` and + * `_.rearg` modify function arguments, making the order in which they are + * executed important, preventing the merging of metadata. However, we make + * an exception for a safe combined case where curried functions have `_.ary` + * and or `_.rearg` applied. + * + * @private + * @param {Array} data The destination metadata. + * @param {Array} source The source metadata. + * @returns {Array} Returns `data`. + */ + function mergeData(data, source) { + var bitmask = data[1], + srcBitmask = source[1], + newBitmask = bitmask | srcBitmask, + isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG); + + var isCombo = + (srcBitmask == WRAP_ARY_FLAG && bitmask == WRAP_CURRY_FLAG) || + (srcBitmask == WRAP_ARY_FLAG && bitmask == WRAP_REARG_FLAG && data[7].length <= source[8]) || + (srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG) && + source[7].length <= source[8] && + bitmask == WRAP_CURRY_FLAG); + + // Exit early if metadata can't be merged. + if (!(isCommon || isCombo)) { + return data; + } + // Use source `thisArg` if available. + if (srcBitmask & WRAP_BIND_FLAG) { + data[2] = source[2]; + // Set when currying a bound function. + newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG; + } + // Compose partial arguments. + var value = source[3]; + if (value) { + var partials = data[3]; + data[3] = partials ? composeArgs(partials, value, source[4]) : value; + data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4]; + } + // Compose partial right arguments. + value = source[5]; + if (value) { + partials = data[5]; + data[5] = partials ? composeArgsRight(partials, value, source[6]) : value; + data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6]; + } + // Use source `argPos` if available. + value = source[7]; + if (value) { + data[7] = value; + } + // Use source `ary` if it's smaller. + if (srcBitmask & WRAP_ARY_FLAG) { + data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]); + } + // Use source `arity` if one is not provided. + if (data[9] == null) { + data[9] = source[9]; + } + // Use source `func` and merge bitmasks. + data[0] = source[0]; + data[1] = newBitmask; + + return data; + } + + /** + * This function is like + * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) + * except that it includes inherited enumerable properties. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function nativeKeysIn(object) { + var result = []; + if (object != null) { + for (var key in Object(object)) { + result.push(key); + } + } + return result; + } + + /** + * Converts `value` to a string using `Object.prototype.toString`. + * + * @private + * @param {*} value The value to convert. + * @returns {string} Returns the converted string. + */ + function objectToString(value) { + return nativeObjectToString.call(value); + } + + /** + * A specialized version of `baseRest` which transforms the rest array. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @param {Function} transform The rest array transform. + * @returns {Function} Returns the new function. + */ + function overRest(func, start, transform) { + start = nativeMax(start === undefined ? func.length - 1 : start, 0); + return function () { + var args = arguments, + index = -1, + length = nativeMax(args.length - start, 0), + array = Array(length); + + while (++index < length) { + array[index] = args[start + index]; + } + index = -1; + var otherArgs = Array(start + 1); + while (++index < start) { + otherArgs[index] = args[index]; + } + otherArgs[start] = transform(array); + return apply(func, this, otherArgs); + }; + } + + /** + * Gets the parent value at `path` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} path The path to get the parent value of. + * @returns {*} Returns the parent value. + */ + function parent(object, path) { + return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1)); + } + + /** + * Reorder `array` according to the specified indexes where the element at + * the first index is assigned as the first element, the element at + * the second index is assigned as the second element, and so on. + * + * @private + * @param {Array} array The array to reorder. + * @param {Array} indexes The arranged array indexes. + * @returns {Array} Returns `array`. + */ + function reorder(array, indexes) { + var arrLength = array.length, + length = nativeMin(indexes.length, arrLength), + oldArray = copyArray(array); + + while (length--) { + var index = indexes[length]; + array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined; + } + return array; + } + + /** + * Sets metadata for `func`. + * + * **Note:** If this function becomes hot, i.e. is invoked a lot in a short + * period of time, it will trip its breaker and transition to an identity + * function to avoid garbage collection pauses in V8. See + * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070) + * for more details. + * + * @private + * @param {Function} func The function to associate metadata with. + * @param {*} data The metadata. + * @returns {Function} Returns `func`. + */ + var setData = shortOut(baseSetData); + + /** + * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout). + * + * @private + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @returns {number|Object} Returns the timer id or timeout object. + */ + var setTimeout = + ctxSetTimeout || + function (func, wait) { + return root.setTimeout(func, wait); + }; + + /** + * Sets the `toString` method of `func` to return `string`. + * + * @private + * @param {Function} func The function to modify. + * @param {Function} string The `toString` result. + * @returns {Function} Returns `func`. + */ + var setToString = shortOut(baseSetToString); + + /** + * Sets the `toString` method of `wrapper` to mimic the source of `reference` + * with wrapper details in a comment at the top of the source body. + * + * @private + * @param {Function} wrapper The function to modify. + * @param {Function} reference The reference function. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @returns {Function} Returns `wrapper`. + */ + function setWrapToString(wrapper, reference, bitmask) { + var source = reference + ''; + return setToString( + wrapper, + insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)) + ); + } + + /** + * Creates a function that'll short out and invoke `identity` instead + * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN` + * milliseconds. + * + * @private + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new shortable function. + */ + function shortOut(func) { + var count = 0, + lastCalled = 0; + + return function () { + var stamp = nativeNow(), + remaining = HOT_SPAN - (stamp - lastCalled); + + lastCalled = stamp; + if (remaining > 0) { + if (++count >= HOT_COUNT) { + return arguments[0]; + } + } else { + count = 0; + } + return func.apply(undefined, arguments); + }; + } + + /** + * A specialized version of `_.shuffle` which mutates and sets the size of `array`. + * + * @private + * @param {Array} array The array to shuffle. + * @param {number} [size=array.length] The size of `array`. + * @returns {Array} Returns `array`. + */ + function shuffleSelf(array, size) { + var index = -1, + length = array.length, + lastIndex = length - 1; + + size = size === undefined ? length : size; + while (++index < size) { + var rand = baseRandom(index, lastIndex), + value = array[rand]; + + array[rand] = array[index]; + array[index] = value; + } + array.length = size; + return array; + } + + /** + * Converts `string` to a property path array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the property path array. + */ + var stringToPath = memoizeCapped(function (string) { + var result = []; + if (string.charCodeAt(0) === 46 /* . */) { + result.push(''); + } + string.replace(rePropName, function (match, number, quote, subString) { + result.push(quote ? subString.replace(reEscapeChar, '$1') : number || match); + }); + return result; + }); + + /** + * Converts `value` to a string key if it's not a string or symbol. + * + * @private + * @param {*} value The value to inspect. + * @returns {string|symbol} Returns the key. + */ + function toKey(value) { + if (typeof value == 'string' || isSymbol(value)) { + return value; + } + var result = value + ''; + return result == '0' && 1 / value == -INFINITY ? '-0' : result; + } + + /** + * Converts `func` to its source code. + * + * @private + * @param {Function} func The function to convert. + * @returns {string} Returns the source code. + */ + function toSource(func) { + if (func != null) { + try { + return funcToString.call(func); + } catch (e) {} + try { + return func + ''; + } catch (e) {} + } + return ''; + } + + /** + * Updates wrapper `details` based on `bitmask` flags. + * + * @private + * @returns {Array} details The details to modify. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @returns {Array} Returns `details`. + */ + function updateWrapDetails(details, bitmask) { + arrayEach(wrapFlags, function (pair) { + var value = '_.' + pair[0]; + if (bitmask & pair[1] && !arrayIncludes(details, value)) { + details.push(value); + } + }); + return details.sort(); + } + + /** + * Creates a clone of `wrapper`. + * + * @private + * @param {Object} wrapper The wrapper to clone. + * @returns {Object} Returns the cloned wrapper. + */ + function wrapperClone(wrapper) { + if (wrapper instanceof LazyWrapper) { + return wrapper.clone(); + } + var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__); + result.__actions__ = copyArray(wrapper.__actions__); + result.__index__ = wrapper.__index__; + result.__values__ = wrapper.__values__; + return result; + } + + /*------------------------------------------------------------------------*/ + + /** + * Creates an array of elements split into groups the length of `size`. + * If `array` can't be split evenly, the final chunk will be the remaining + * elements. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to process. + * @param {number} [size=1] The length of each chunk + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the new array of chunks. + * @example + * + * _.chunk(['a', 'b', 'c', 'd'], 2); + * // => [['a', 'b'], ['c', 'd']] + * + * _.chunk(['a', 'b', 'c', 'd'], 3); + * // => [['a', 'b', 'c'], ['d']] + */ + function chunk(array, size, guard) { + if (guard ? isIterateeCall(array, size, guard) : size === undefined) { + size = 1; + } else { + size = nativeMax(toInteger(size), 0); + } + var length = array == null ? 0 : array.length; + if (!length || size < 1) { + return []; + } + var index = 0, + resIndex = 0, + result = Array(nativeCeil(length / size)); + + while (index < length) { + result[resIndex++] = baseSlice(array, index, (index += size)); + } + return result; + } + + /** + * Creates an array with all falsey values removed. The values `false`, `null`, + * `0`, `""`, `undefined`, and `NaN` are falsey. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to compact. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.compact([0, 1, false, 2, '', 3]); + * // => [1, 2, 3] + */ + function compact(array) { + var index = -1, + length = array == null ? 0 : array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (value) { + result[resIndex++] = value; + } + } + return result; + } + + /** + * Creates a new array concatenating `array` with any additional arrays + * and/or values. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to concatenate. + * @param {...*} [values] The values to concatenate. + * @returns {Array} Returns the new concatenated array. + * @example + * + * var array = [1]; + * var other = _.concat(array, 2, [3], [[4]]); + * + * console.log(other); + * // => [1, 2, 3, [4]] + * + * console.log(array); + * // => [1] + */ + function concat() { + var length = arguments.length; + if (!length) { + return []; + } + var args = Array(length - 1), + array = arguments[0], + index = length; + + while (index--) { + args[index - 1] = arguments[index]; + } + return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1)); + } + + /** + * Creates an array of `array` values not included in the other given arrays + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. The order and references of result values are + * determined by the first array. + * + * **Note:** Unlike `_.pullAll`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @returns {Array} Returns the new array of filtered values. + * @see _.without, _.xor + * @example + * + * _.difference([2, 1], [2, 3]); + * // => [1] + */ + var difference = baseRest(function (array, values) { + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) + : []; + }); + + /** + * This method is like `_.difference` except that it accepts `iteratee` which + * is invoked for each element of `array` and `values` to generate the criterion + * by which they're compared. The order and references of result values are + * determined by the first array. The iteratee is invoked with one argument: + * (value). + * + * **Note:** Unlike `_.pullAllBy`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [1.2] + * + * // The `_.property` iteratee shorthand. + * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x'); + * // => [{ 'x': 2 }] + */ + var differenceBy = baseRest(function (array, values) { + var iteratee = last(values); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return isArrayLikeObject(array) + ? baseDifference( + array, + baseFlatten(values, 1, isArrayLikeObject, true), + getIteratee(iteratee, 2) + ) + : []; + }); + + /** + * This method is like `_.difference` except that it accepts `comparator` + * which is invoked to compare elements of `array` to `values`. The order and + * references of result values are determined by the first array. The comparator + * is invoked with two arguments: (arrVal, othVal). + * + * **Note:** Unlike `_.pullAllWith`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * + * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual); + * // => [{ 'x': 2, 'y': 1 }] + */ + var differenceWith = baseRest(function (array, values) { + var comparator = last(values); + if (isArrayLikeObject(comparator)) { + comparator = undefined; + } + return isArrayLikeObject(array) + ? baseDifference( + array, + baseFlatten(values, 1, isArrayLikeObject, true), + undefined, + comparator + ) + : []; + }); + + /** + * Creates a slice of `array` with `n` elements dropped from the beginning. + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to drop. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.drop([1, 2, 3]); + * // => [2, 3] + * + * _.drop([1, 2, 3], 2); + * // => [3] + * + * _.drop([1, 2, 3], 5); + * // => [] + * + * _.drop([1, 2, 3], 0); + * // => [1, 2, 3] + */ + function drop(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = guard || n === undefined ? 1 : toInteger(n); + return baseSlice(array, n < 0 ? 0 : n, length); + } + + /** + * Creates a slice of `array` with `n` elements dropped from the end. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to drop. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.dropRight([1, 2, 3]); + * // => [1, 2] + * + * _.dropRight([1, 2, 3], 2); + * // => [1] + * + * _.dropRight([1, 2, 3], 5); + * // => [] + * + * _.dropRight([1, 2, 3], 0); + * // => [1, 2, 3] + */ + function dropRight(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = guard || n === undefined ? 1 : toInteger(n); + n = length - n; + return baseSlice(array, 0, n < 0 ? 0 : n); + } + + /** + * Creates a slice of `array` excluding elements dropped from the end. + * Elements are dropped until `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.dropRightWhile(users, function(o) { return !o.active; }); + * // => objects for ['barney'] + * + * // The `_.matches` iteratee shorthand. + * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false }); + * // => objects for ['barney', 'fred'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.dropRightWhile(users, ['active', false]); + * // => objects for ['barney'] + * + * // The `_.property` iteratee shorthand. + * _.dropRightWhile(users, 'active'); + * // => objects for ['barney', 'fred', 'pebbles'] + */ + function dropRightWhile(array, predicate) { + return array && array.length ? baseWhile(array, getIteratee(predicate, 3), true, true) : []; + } + + /** + * Creates a slice of `array` excluding elements dropped from the beginning. + * Elements are dropped until `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.dropWhile(users, function(o) { return !o.active; }); + * // => objects for ['pebbles'] + * + * // The `_.matches` iteratee shorthand. + * _.dropWhile(users, { 'user': 'barney', 'active': false }); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.dropWhile(users, ['active', false]); + * // => objects for ['pebbles'] + * + * // The `_.property` iteratee shorthand. + * _.dropWhile(users, 'active'); + * // => objects for ['barney', 'fred', 'pebbles'] + */ + function dropWhile(array, predicate) { + return array && array.length ? baseWhile(array, getIteratee(predicate, 3), true) : []; + } + + /** + * Fills elements of `array` with `value` from `start` up to, but not + * including, `end`. + * + * **Note:** This method mutates `array`. + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Array + * @param {Array} array The array to fill. + * @param {*} value The value to fill `array` with. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3]; + * + * _.fill(array, 'a'); + * console.log(array); + * // => ['a', 'a', 'a'] + * + * _.fill(Array(3), 2); + * // => [2, 2, 2] + * + * _.fill([4, 6, 8, 10], '*', 1, 3); + * // => [4, '*', '*', 10] + */ + function fill(array, value, start, end) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + if (start && typeof start != 'number' && isIterateeCall(array, value, start)) { + start = 0; + end = length; + } + return baseFill(array, value, start, end); + } + + /** + * This method is like `_.find` except that it returns the index of the first + * element `predicate` returns truthy for instead of the element itself. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.findIndex(users, function(o) { return o.user == 'barney'; }); + * // => 0 + * + * // The `_.matches` iteratee shorthand. + * _.findIndex(users, { 'user': 'fred', 'active': false }); + * // => 1 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findIndex(users, ['active', false]); + * // => 0 + * + * // The `_.property` iteratee shorthand. + * _.findIndex(users, 'active'); + * // => 2 + */ + function findIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = fromIndex == null ? 0 : toInteger(fromIndex); + if (index < 0) { + index = nativeMax(length + index, 0); + } + return baseFindIndex(array, getIteratee(predicate, 3), index); + } + + /** + * This method is like `_.findIndex` except that it iterates over elements + * of `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; }); + * // => 2 + * + * // The `_.matches` iteratee shorthand. + * _.findLastIndex(users, { 'user': 'barney', 'active': true }); + * // => 0 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastIndex(users, ['active', false]); + * // => 2 + * + * // The `_.property` iteratee shorthand. + * _.findLastIndex(users, 'active'); + * // => 0 + */ + function findLastIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length - 1; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = fromIndex < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1); + } + return baseFindIndex(array, getIteratee(predicate, 3), index, true); + } + + /** + * Flattens `array` a single level deep. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to flatten. + * @returns {Array} Returns the new flattened array. + * @example + * + * _.flatten([1, [2, [3, [4]], 5]]); + * // => [1, 2, [3, [4]], 5] + */ + function flatten(array) { + var length = array == null ? 0 : array.length; + return length ? baseFlatten(array, 1) : []; + } + + /** + * Recursively flattens `array`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to flatten. + * @returns {Array} Returns the new flattened array. + * @example + * + * _.flattenDeep([1, [2, [3, [4]], 5]]); + * // => [1, 2, 3, 4, 5] + */ + function flattenDeep(array) { + var length = array == null ? 0 : array.length; + return length ? baseFlatten(array, INFINITY) : []; + } + + /** + * Recursively flatten `array` up to `depth` times. + * + * @static + * @memberOf _ + * @since 4.4.0 + * @category Array + * @param {Array} array The array to flatten. + * @param {number} [depth=1] The maximum recursion depth. + * @returns {Array} Returns the new flattened array. + * @example + * + * var array = [1, [2, [3, [4]], 5]]; + * + * _.flattenDepth(array, 1); + * // => [1, 2, [3, [4]], 5] + * + * _.flattenDepth(array, 2); + * // => [1, 2, 3, [4], 5] + */ + function flattenDepth(array, depth) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + depth = depth === undefined ? 1 : toInteger(depth); + return baseFlatten(array, depth); + } + + /** + * The inverse of `_.toPairs`; this method returns an object composed + * from key-value `pairs`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} pairs The key-value pairs. + * @returns {Object} Returns the new object. + * @example + * + * _.fromPairs([['a', 1], ['b', 2]]); + * // => { 'a': 1, 'b': 2 } + */ + function fromPairs(pairs) { + var index = -1, + length = pairs == null ? 0 : pairs.length, + result = {}; + + while (++index < length) { + var pair = pairs[index]; + result[pair[0]] = pair[1]; + } + return result; + } + + /** + * Gets the first element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @alias first + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the first element of `array`. + * @example + * + * _.head([1, 2, 3]); + * // => 1 + * + * _.head([]); + * // => undefined + */ + function head(array) { + return array && array.length ? array[0] : undefined; + } + + /** + * Gets the index at which the first occurrence of `value` is found in `array` + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. If `fromIndex` is negative, it's used as the + * offset from the end of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.indexOf([1, 2, 1, 2], 2); + * // => 1 + * + * // Search from the `fromIndex`. + * _.indexOf([1, 2, 1, 2], 2, 2); + * // => 3 + */ + function indexOf(array, value, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = fromIndex == null ? 0 : toInteger(fromIndex); + if (index < 0) { + index = nativeMax(length + index, 0); + } + return baseIndexOf(array, value, index); + } + + /** + * Gets all but the last element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.initial([1, 2, 3]); + * // => [1, 2] + */ + function initial(array) { + var length = array == null ? 0 : array.length; + return length ? baseSlice(array, 0, -1) : []; + } + + /** + * Creates an array of unique values that are included in all given arrays + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. The order and references of result values are + * determined by the first array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * _.intersection([2, 1], [2, 3]); + * // => [2] + */ + var intersection = baseRest(function (arrays) { + var mapped = arrayMap(arrays, castArrayLikeObject); + return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped) : []; + }); + + /** + * This method is like `_.intersection` except that it accepts `iteratee` + * which is invoked for each element of each `arrays` to generate the criterion + * by which they're compared. The order and references of result values are + * determined by the first array. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [2.1] + * + * // The `_.property` iteratee shorthand. + * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }] + */ + var intersectionBy = baseRest(function (arrays) { + var iteratee = last(arrays), + mapped = arrayMap(arrays, castArrayLikeObject); + + if (iteratee === last(mapped)) { + iteratee = undefined; + } else { + mapped.pop(); + } + return mapped.length && mapped[0] === arrays[0] + ? baseIntersection(mapped, getIteratee(iteratee, 2)) + : []; + }); + + /** + * This method is like `_.intersection` except that it accepts `comparator` + * which is invoked to compare elements of `arrays`. The order and references + * of result values are determined by the first array. The comparator is + * invoked with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.intersectionWith(objects, others, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }] + */ + var intersectionWith = baseRest(function (arrays) { + var comparator = last(arrays), + mapped = arrayMap(arrays, castArrayLikeObject); + + comparator = typeof comparator == 'function' ? comparator : undefined; + if (comparator) { + mapped.pop(); + } + return mapped.length && mapped[0] === arrays[0] + ? baseIntersection(mapped, undefined, comparator) + : []; + }); + + /** + * Converts all elements in `array` into a string separated by `separator`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to convert. + * @param {string} [separator=','] The element separator. + * @returns {string} Returns the joined string. + * @example + * + * _.join(['a', 'b', 'c'], '~'); + * // => 'a~b~c' + */ + function join(array, separator) { + return array == null ? '' : nativeJoin.call(array, separator); + } + + /** + * Gets the last element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the last element of `array`. + * @example + * + * _.last([1, 2, 3]); + * // => 3 + */ + function last(array) { + var length = array == null ? 0 : array.length; + return length ? array[length - 1] : undefined; + } + + /** + * This method is like `_.indexOf` except that it iterates over elements of + * `array` from right to left. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.lastIndexOf([1, 2, 1, 2], 2); + * // => 3 + * + * // Search from the `fromIndex`. + * _.lastIndexOf([1, 2, 1, 2], 2, 2); + * // => 1 + */ + function lastIndexOf(array, value, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1); + } + return value === value + ? strictLastIndexOf(array, value, index) + : baseFindIndex(array, baseIsNaN, index, true); + } + + /** + * Gets the element at index `n` of `array`. If `n` is negative, the nth + * element from the end is returned. + * + * @static + * @memberOf _ + * @since 4.11.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=0] The index of the element to return. + * @returns {*} Returns the nth element of `array`. + * @example + * + * var array = ['a', 'b', 'c', 'd']; + * + * _.nth(array, 1); + * // => 'b' + * + * _.nth(array, -2); + * // => 'c'; + */ + function nth(array, n) { + return array && array.length ? baseNth(array, toInteger(n)) : undefined; + } + + /** + * Removes all given values from `array` using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove` + * to remove elements from an array by predicate. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {...*} [values] The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = ['a', 'b', 'c', 'a', 'b', 'c']; + * + * _.pull(array, 'a', 'c'); + * console.log(array); + * // => ['b', 'b'] + */ + var pull = baseRest(pullAll); + + /** + * This method is like `_.pull` except that it accepts an array of values to remove. + * + * **Note:** Unlike `_.difference`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = ['a', 'b', 'c', 'a', 'b', 'c']; + * + * _.pullAll(array, ['a', 'c']); + * console.log(array); + * // => ['b', 'b'] + */ + function pullAll(array, values) { + return array && array.length && values && values.length ? basePullAll(array, values) : array; + } + + /** + * This method is like `_.pullAll` except that it accepts `iteratee` which is + * invoked for each element of `array` and `values` to generate the criterion + * by which they're compared. The iteratee is invoked with one argument: (value). + * + * **Note:** Unlike `_.differenceBy`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns `array`. + * @example + * + * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }]; + * + * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x'); + * console.log(array); + * // => [{ 'x': 2 }] + */ + function pullAllBy(array, values, iteratee) { + return array && array.length && values && values.length + ? basePullAll(array, values, getIteratee(iteratee, 2)) + : array; + } + + /** + * This method is like `_.pullAll` except that it accepts `comparator` which + * is invoked to compare elements of `array` to `values`. The comparator is + * invoked with two arguments: (arrVal, othVal). + * + * **Note:** Unlike `_.differenceWith`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns `array`. + * @example + * + * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }]; + * + * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual); + * console.log(array); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }] + */ + function pullAllWith(array, values, comparator) { + return array && array.length && values && values.length + ? basePullAll(array, values, undefined, comparator) + : array; + } + + /** + * Removes elements from `array` corresponding to `indexes` and returns an + * array of removed elements. + * + * **Note:** Unlike `_.at`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {...(number|number[])} [indexes] The indexes of elements to remove. + * @returns {Array} Returns the new array of removed elements. + * @example + * + * var array = ['a', 'b', 'c', 'd']; + * var pulled = _.pullAt(array, [1, 3]); + * + * console.log(array); + * // => ['a', 'c'] + * + * console.log(pulled); + * // => ['b', 'd'] + */ + var pullAt = flatRest(function (array, indexes) { + var length = array == null ? 0 : array.length, + result = baseAt(array, indexes); + + basePullAt( + array, + arrayMap(indexes, function (index) { + return isIndex(index, length) ? +index : index; + }).sort(compareAscending) + ); + + return result; + }); + + /** + * Removes all elements from `array` that `predicate` returns truthy for + * and returns an array of the removed elements. The predicate is invoked + * with three arguments: (value, index, array). + * + * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull` + * to pull elements from an array by value. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new array of removed elements. + * @example + * + * var array = [1, 2, 3, 4]; + * var evens = _.remove(array, function(n) { + * return n % 2 == 0; + * }); + * + * console.log(array); + * // => [1, 3] + * + * console.log(evens); + * // => [2, 4] + */ + function remove(array, predicate) { + var result = []; + if (!(array && array.length)) { + return result; + } + var index = -1, + indexes = [], + length = array.length; + + predicate = getIteratee(predicate, 3); + while (++index < length) { + var value = array[index]; + if (predicate(value, index, array)) { + result.push(value); + indexes.push(index); + } + } + basePullAt(array, indexes); + return result; + } + + /** + * Reverses `array` so that the first element becomes the last, the second + * element becomes the second to last, and so on. + * + * **Note:** This method mutates `array` and is based on + * [`Array#reverse`](https://mdn.io/Array/reverse). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3]; + * + * _.reverse(array); + * // => [3, 2, 1] + * + * console.log(array); + * // => [3, 2, 1] + */ + function reverse(array) { + return array == null ? array : nativeReverse.call(array); + } + + /** + * Creates a slice of `array` from `start` up to, but not including, `end`. + * + * **Note:** This method is used instead of + * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are + * returned. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function slice(array, start, end) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + if (end && typeof end != 'number' && isIterateeCall(array, start, end)) { + start = 0; + end = length; + } else { + start = start == null ? 0 : toInteger(start); + end = end === undefined ? length : toInteger(end); + } + return baseSlice(array, start, end); + } + + /** + * Uses a binary search to determine the lowest index at which `value` + * should be inserted into `array` in order to maintain its sort order. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedIndex([30, 50], 40); + * // => 1 + */ + function sortedIndex(array, value) { + return baseSortedIndex(array, value); + } + + /** + * This method is like `_.sortedIndex` except that it accepts `iteratee` + * which is invoked for `value` and each element of `array` to compute their + * sort ranking. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * var objects = [{ 'x': 4 }, { 'x': 5 }]; + * + * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); + * // => 0 + * + * // The `_.property` iteratee shorthand. + * _.sortedIndexBy(objects, { 'x': 4 }, 'x'); + * // => 0 + */ + function sortedIndexBy(array, value, iteratee) { + return baseSortedIndexBy(array, value, getIteratee(iteratee, 2)); + } + + /** + * This method is like `_.indexOf` except that it performs a binary + * search on a sorted `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.sortedIndexOf([4, 5, 5, 5, 6], 5); + * // => 1 + */ + function sortedIndexOf(array, value) { + var length = array == null ? 0 : array.length; + if (length) { + var index = baseSortedIndex(array, value); + if (index < length && eq(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * This method is like `_.sortedIndex` except that it returns the highest + * index at which `value` should be inserted into `array` in order to + * maintain its sort order. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedLastIndex([4, 5, 5, 5, 6], 5); + * // => 4 + */ + function sortedLastIndex(array, value) { + return baseSortedIndex(array, value, true); + } + + /** + * This method is like `_.sortedLastIndex` except that it accepts `iteratee` + * which is invoked for `value` and each element of `array` to compute their + * sort ranking. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * var objects = [{ 'x': 4 }, { 'x': 5 }]; + * + * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); + * // => 1 + * + * // The `_.property` iteratee shorthand. + * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x'); + * // => 1 + */ + function sortedLastIndexBy(array, value, iteratee) { + return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true); + } + + /** + * This method is like `_.lastIndexOf` except that it performs a binary + * search on a sorted `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5); + * // => 3 + */ + function sortedLastIndexOf(array, value) { + var length = array == null ? 0 : array.length; + if (length) { + var index = baseSortedIndex(array, value, true) - 1; + if (eq(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * This method is like `_.uniq` except that it's designed and optimized + * for sorted arrays. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.sortedUniq([1, 1, 2]); + * // => [1, 2] + */ + function sortedUniq(array) { + return array && array.length ? baseSortedUniq(array) : []; + } + + /** + * This method is like `_.uniqBy` except that it's designed and optimized + * for sorted arrays. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor); + * // => [1.1, 2.3] + */ + function sortedUniqBy(array, iteratee) { + return array && array.length ? baseSortedUniq(array, getIteratee(iteratee, 2)) : []; + } + + /** + * Gets all but the first element of `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to query. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.tail([1, 2, 3]); + * // => [2, 3] + */ + function tail(array) { + var length = array == null ? 0 : array.length; + return length ? baseSlice(array, 1, length) : []; + } + + /** + * Creates a slice of `array` with `n` elements taken from the beginning. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to take. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.take([1, 2, 3]); + * // => [1] + * + * _.take([1, 2, 3], 2); + * // => [1, 2] + * + * _.take([1, 2, 3], 5); + * // => [1, 2, 3] + * + * _.take([1, 2, 3], 0); + * // => [] + */ + function take(array, n, guard) { + if (!(array && array.length)) { + return []; + } + n = guard || n === undefined ? 1 : toInteger(n); + return baseSlice(array, 0, n < 0 ? 0 : n); + } + + /** + * Creates a slice of `array` with `n` elements taken from the end. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to take. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.takeRight([1, 2, 3]); + * // => [3] + * + * _.takeRight([1, 2, 3], 2); + * // => [2, 3] + * + * _.takeRight([1, 2, 3], 5); + * // => [1, 2, 3] + * + * _.takeRight([1, 2, 3], 0); + * // => [] + */ + function takeRight(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = guard || n === undefined ? 1 : toInteger(n); + n = length - n; + return baseSlice(array, n < 0 ? 0 : n, length); + } + + /** + * Creates a slice of `array` with elements taken from the end. Elements are + * taken until `predicate` returns falsey. The predicate is invoked with + * three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.takeRightWhile(users, function(o) { return !o.active; }); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.matches` iteratee shorthand. + * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false }); + * // => objects for ['pebbles'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.takeRightWhile(users, ['active', false]); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.property` iteratee shorthand. + * _.takeRightWhile(users, 'active'); + * // => [] + */ + function takeRightWhile(array, predicate) { + return array && array.length ? baseWhile(array, getIteratee(predicate, 3), false, true) : []; + } + + /** + * Creates a slice of `array` with elements taken from the beginning. Elements + * are taken until `predicate` returns falsey. The predicate is invoked with + * three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.takeWhile(users, function(o) { return !o.active; }); + * // => objects for ['barney', 'fred'] + * + * // The `_.matches` iteratee shorthand. + * _.takeWhile(users, { 'user': 'barney', 'active': false }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.takeWhile(users, ['active', false]); + * // => objects for ['barney', 'fred'] + * + * // The `_.property` iteratee shorthand. + * _.takeWhile(users, 'active'); + * // => [] + */ + function takeWhile(array, predicate) { + return array && array.length ? baseWhile(array, getIteratee(predicate, 3)) : []; + } + + /** + * Creates an array of unique values, in order, from all given arrays using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of combined values. + * @example + * + * _.union([2], [1, 2]); + * // => [2, 1] + */ + var union = baseRest(function (arrays) { + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true)); + }); + + /** + * This method is like `_.union` except that it accepts `iteratee` which is + * invoked for each element of each `arrays` to generate the criterion by + * which uniqueness is computed. Result values are chosen from the first + * array in which the value occurs. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of combined values. + * @example + * + * _.unionBy([2.1], [1.2, 2.3], Math.floor); + * // => [2.1, 1.2] + * + * // The `_.property` iteratee shorthand. + * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + var unionBy = baseRest(function (arrays) { + var iteratee = last(arrays); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)); + }); + + /** + * This method is like `_.union` except that it accepts `comparator` which + * is invoked to compare elements of `arrays`. Result values are chosen from + * the first array in which the value occurs. The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of combined values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.unionWith(objects, others, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] + */ + var unionWith = baseRest(function (arrays) { + var comparator = last(arrays); + comparator = typeof comparator == 'function' ? comparator : undefined; + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator); + }); + + /** + * Creates a duplicate-free version of an array, using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons, in which only the first occurrence of each element + * is kept. The order of result values is determined by the order they occur + * in the array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.uniq([2, 1, 2]); + * // => [2, 1] + */ + function uniq(array) { + return array && array.length ? baseUniq(array) : []; + } + + /** + * This method is like `_.uniq` except that it accepts `iteratee` which is + * invoked for each element in `array` to generate the criterion by which + * uniqueness is computed. The order of result values is determined by the + * order they occur in the array. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.uniqBy([2.1, 1.2, 2.3], Math.floor); + * // => [2.1, 1.2] + * + * // The `_.property` iteratee shorthand. + * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + function uniqBy(array, iteratee) { + return array && array.length ? baseUniq(array, getIteratee(iteratee, 2)) : []; + } + + /** + * This method is like `_.uniq` except that it accepts `comparator` which + * is invoked to compare elements of `array`. The order of result values is + * determined by the order they occur in the array.The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.uniqWith(objects, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }] + */ + function uniqWith(array, comparator) { + comparator = typeof comparator == 'function' ? comparator : undefined; + return array && array.length ? baseUniq(array, undefined, comparator) : []; + } + + /** + * This method is like `_.zip` except that it accepts an array of grouped + * elements and creates an array regrouping the elements to their pre-zip + * configuration. + * + * @static + * @memberOf _ + * @since 1.2.0 + * @category Array + * @param {Array} array The array of grouped elements to process. + * @returns {Array} Returns the new array of regrouped elements. + * @example + * + * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]); + * // => [['a', 1, true], ['b', 2, false]] + * + * _.unzip(zipped); + * // => [['a', 'b'], [1, 2], [true, false]] + */ + function unzip(array) { + if (!(array && array.length)) { + return []; + } + var length = 0; + array = arrayFilter(array, function (group) { + if (isArrayLikeObject(group)) { + length = nativeMax(group.length, length); + return true; + } + }); + return baseTimes(length, function (index) { + return arrayMap(array, baseProperty(index)); + }); + } + + /** + * This method is like `_.unzip` except that it accepts `iteratee` to specify + * how regrouped values should be combined. The iteratee is invoked with the + * elements of each group: (...group). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Array + * @param {Array} array The array of grouped elements to process. + * @param {Function} [iteratee=_.identity] The function to combine + * regrouped values. + * @returns {Array} Returns the new array of regrouped elements. + * @example + * + * var zipped = _.zip([1, 2], [10, 20], [100, 200]); + * // => [[1, 10, 100], [2, 20, 200]] + * + * _.unzipWith(zipped, _.add); + * // => [3, 30, 300] + */ + function unzipWith(array, iteratee) { + if (!(array && array.length)) { + return []; + } + var result = unzip(array); + if (iteratee == null) { + return result; + } + return arrayMap(result, function (group) { + return apply(iteratee, undefined, group); + }); + } + + /** + * Creates an array excluding all given values using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * **Note:** Unlike `_.pull`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...*} [values] The values to exclude. + * @returns {Array} Returns the new array of filtered values. + * @see _.difference, _.xor + * @example + * + * _.without([2, 1, 2, 3], 1, 2); + * // => [3] + */ + var without = baseRest(function (array, values) { + return isArrayLikeObject(array) ? baseDifference(array, values) : []; + }); + + /** + * Creates an array of unique values that is the + * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference) + * of the given arrays. The order of result values is determined by the order + * they occur in the arrays. + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of filtered values. + * @see _.difference, _.without + * @example + * + * _.xor([2, 1], [2, 3]); + * // => [1, 3] + */ + var xor = baseRest(function (arrays) { + return baseXor(arrayFilter(arrays, isArrayLikeObject)); + }); + + /** + * This method is like `_.xor` except that it accepts `iteratee` which is + * invoked for each element of each `arrays` to generate the criterion by + * which by which they're compared. The order of result values is determined + * by the order they occur in the arrays. The iteratee is invoked with one + * argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [1.2, 3.4] + * + * // The `_.property` iteratee shorthand. + * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 2 }] + */ + var xorBy = baseRest(function (arrays) { + var iteratee = last(arrays); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2)); + }); + + /** + * This method is like `_.xor` except that it accepts `comparator` which is + * invoked to compare elements of `arrays`. The order of result values is + * determined by the order they occur in the arrays. The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.xorWith(objects, others, _.isEqual); + * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] + */ + var xorWith = baseRest(function (arrays) { + var comparator = last(arrays); + comparator = typeof comparator == 'function' ? comparator : undefined; + return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator); + }); + + /** + * Creates an array of grouped elements, the first of which contains the + * first elements of the given arrays, the second of which contains the + * second elements of the given arrays, and so on. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to process. + * @returns {Array} Returns the new array of grouped elements. + * @example + * + * _.zip(['a', 'b'], [1, 2], [true, false]); + * // => [['a', 1, true], ['b', 2, false]] + */ + var zip = baseRest(unzip); + + /** + * This method is like `_.fromPairs` except that it accepts two arrays, + * one of property identifiers and one of corresponding values. + * + * @static + * @memberOf _ + * @since 0.4.0 + * @category Array + * @param {Array} [props=[]] The property identifiers. + * @param {Array} [values=[]] The property values. + * @returns {Object} Returns the new object. + * @example + * + * _.zipObject(['a', 'b'], [1, 2]); + * // => { 'a': 1, 'b': 2 } + */ + function zipObject(props, values) { + return baseZipObject(props || [], values || [], assignValue); + } + + /** + * This method is like `_.zipObject` except that it supports property paths. + * + * @static + * @memberOf _ + * @since 4.1.0 + * @category Array + * @param {Array} [props=[]] The property identifiers. + * @param {Array} [values=[]] The property values. + * @returns {Object} Returns the new object. + * @example + * + * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]); + * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } } + */ + function zipObjectDeep(props, values) { + return baseZipObject(props || [], values || [], baseSet); + } + + /** + * This method is like `_.zip` except that it accepts `iteratee` to specify + * how grouped values should be combined. The iteratee is invoked with the + * elements of each group: (...group). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Array + * @param {...Array} [arrays] The arrays to process. + * @param {Function} [iteratee=_.identity] The function to combine + * grouped values. + * @returns {Array} Returns the new array of grouped elements. + * @example + * + * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) { + * return a + b + c; + * }); + * // => [111, 222] + */ + var zipWith = baseRest(function (arrays) { + var length = arrays.length, + iteratee = length > 1 ? arrays[length - 1] : undefined; + + iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined; + return unzipWith(arrays, iteratee); + }); + + /*------------------------------------------------------------------------*/ + + /** + * Creates a `lodash` wrapper instance that wraps `value` with explicit method + * chain sequences enabled. The result of such sequences must be unwrapped + * with `_#value`. + * + * @static + * @memberOf _ + * @since 1.3.0 + * @category Seq + * @param {*} value The value to wrap. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'pebbles', 'age': 1 } + * ]; + * + * var youngest = _ + * .chain(users) + * .sortBy('age') + * .map(function(o) { + * return o.user + ' is ' + o.age; + * }) + * .head() + * .value(); + * // => 'pebbles is 1' + */ + function chain(value) { + var result = lodash(value); + result.__chain__ = true; + return result; + } + + /** + * This method invokes `interceptor` and returns `value`. The interceptor + * is invoked with one argument; (value). The purpose of this method is to + * "tap into" a method chain sequence in order to modify intermediate results. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns `value`. + * @example + * + * _([1, 2, 3]) + * .tap(function(array) { + * // Mutate input array. + * array.pop(); + * }) + * .reverse() + * .value(); + * // => [2, 1] + */ + function tap(value, interceptor) { + interceptor(value); + return value; + } + + /** + * This method is like `_.tap` except that it returns the result of `interceptor`. + * The purpose of this method is to "pass thru" values replacing intermediate + * results in a method chain sequence. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Seq + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns the result of `interceptor`. + * @example + * + * _(' abc ') + * .chain() + * .trim() + * .thru(function(value) { + * return [value]; + * }) + * .value(); + * // => ['abc'] + */ + function thru(value, interceptor) { + return interceptor(value); + } + + /** + * This method is the wrapper version of `_.at`. + * + * @name at + * @memberOf _ + * @since 1.0.0 + * @category Seq + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; + * + * _(object).at(['a[0].b.c', 'a[1]']).value(); + * // => [3, 4] + */ + var wrapperAt = flatRest(function (paths) { + var length = paths.length, + start = length ? paths[0] : 0, + value = this.__wrapped__, + interceptor = function (object) { + return baseAt(object, paths); + }; + + if ( + length > 1 || + this.__actions__.length || + !(value instanceof LazyWrapper) || + !isIndex(start) + ) { + return this.thru(interceptor); + } + value = value.slice(start, +start + (length ? 1 : 0)); + value.__actions__.push({ + func: thru, + args: [interceptor], + thisArg: undefined, + }); + return new LodashWrapper(value, this.__chain__).thru(function (array) { + if (length && !array.length) { + array.push(undefined); + } + return array; + }); + }); + + /** + * Creates a `lodash` wrapper instance with explicit method chain sequences enabled. + * + * @name chain + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 } + * ]; + * + * // A sequence without explicit chaining. + * _(users).head(); + * // => { 'user': 'barney', 'age': 36 } + * + * // A sequence with explicit chaining. + * _(users) + * .chain() + * .head() + * .pick('user') + * .value(); + * // => { 'user': 'barney' } + */ + function wrapperChain() { + return chain(this); + } + + /** + * Executes the chain sequence and returns the wrapped result. + * + * @name commit + * @memberOf _ + * @since 3.2.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var array = [1, 2]; + * var wrapped = _(array).push(3); + * + * console.log(array); + * // => [1, 2] + * + * wrapped = wrapped.commit(); + * console.log(array); + * // => [1, 2, 3] + * + * wrapped.last(); + * // => 3 + * + * console.log(array); + * // => [1, 2, 3] + */ + function wrapperCommit() { + return new LodashWrapper(this.value(), this.__chain__); + } + + /** + * Gets the next value on a wrapped object following the + * [iterator protocol](https://mdn.io/iteration_protocols#iterator). + * + * @name next + * @memberOf _ + * @since 4.0.0 + * @category Seq + * @returns {Object} Returns the next iterator value. + * @example + * + * var wrapped = _([1, 2]); + * + * wrapped.next(); + * // => { 'done': false, 'value': 1 } + * + * wrapped.next(); + * // => { 'done': false, 'value': 2 } + * + * wrapped.next(); + * // => { 'done': true, 'value': undefined } + */ + function wrapperNext() { + if (this.__values__ === undefined) { + this.__values__ = toArray(this.value()); + } + var done = this.__index__ >= this.__values__.length, + value = done ? undefined : this.__values__[this.__index__++]; + + return { done: done, value: value }; + } + + /** + * Enables the wrapper to be iterable. + * + * @name Symbol.iterator + * @memberOf _ + * @since 4.0.0 + * @category Seq + * @returns {Object} Returns the wrapper object. + * @example + * + * var wrapped = _([1, 2]); + * + * wrapped[Symbol.iterator]() === wrapped; + * // => true + * + * Array.from(wrapped); + * // => [1, 2] + */ + function wrapperToIterator() { + return this; + } + + /** + * Creates a clone of the chain sequence planting `value` as the wrapped value. + * + * @name plant + * @memberOf _ + * @since 3.2.0 + * @category Seq + * @param {*} value The value to plant. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * function square(n) { + * return n * n; + * } + * + * var wrapped = _([1, 2]).map(square); + * var other = wrapped.plant([3, 4]); + * + * other.value(); + * // => [9, 16] + * + * wrapped.value(); + * // => [1, 4] + */ + function wrapperPlant(value) { + var result, + parent = this; + + while (parent instanceof baseLodash) { + var clone = wrapperClone(parent); + clone.__index__ = 0; + clone.__values__ = undefined; + if (result) { + previous.__wrapped__ = clone; + } else { + result = clone; + } + var previous = clone; + parent = parent.__wrapped__; + } + previous.__wrapped__ = value; + return result; + } + + /** + * This method is the wrapper version of `_.reverse`. + * + * **Note:** This method mutates the wrapped array. + * + * @name reverse + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var array = [1, 2, 3]; + * + * _(array).reverse().value() + * // => [3, 2, 1] + * + * console.log(array); + * // => [3, 2, 1] + */ + function wrapperReverse() { + var value = this.__wrapped__; + if (value instanceof LazyWrapper) { + var wrapped = value; + if (this.__actions__.length) { + wrapped = new LazyWrapper(this); + } + wrapped = wrapped.reverse(); + wrapped.__actions__.push({ + func: thru, + args: [reverse], + thisArg: undefined, + }); + return new LodashWrapper(wrapped, this.__chain__); + } + return this.thru(reverse); + } + + /** + * Executes the chain sequence to resolve the unwrapped value. + * + * @name value + * @memberOf _ + * @since 0.1.0 + * @alias toJSON, valueOf + * @category Seq + * @returns {*} Returns the resolved unwrapped value. + * @example + * + * _([1, 2, 3]).value(); + * // => [1, 2, 3] + */ + function wrapperValue() { + return baseWrapperValue(this.__wrapped__, this.__actions__); + } + + /*------------------------------------------------------------------------*/ + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The corresponding value of + * each key is the number of times the key was returned by `iteratee`. The + * iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.countBy([6.1, 4.2, 6.3], Math.floor); + * // => { '4': 1, '6': 2 } + * + * // The `_.property` iteratee shorthand. + * _.countBy(['one', 'two', 'three'], 'length'); + * // => { '3': 2, '5': 1 } + */ + var countBy = createAggregator(function (result, value, key) { + if (hasOwnProperty.call(result, key)) { + ++result[key]; + } else { + baseAssignValue(result, key, 1); + } + }); + + /** + * Checks if `predicate` returns truthy for **all** elements of `collection`. + * Iteration is stopped once `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * **Note:** This method returns `true` for + * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because + * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of + * elements of empty collections. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + * @example + * + * _.every([true, 1, null, 'yes'], Boolean); + * // => false + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.every(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.every(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.every(users, 'active'); + * // => false + */ + function every(collection, predicate, guard) { + var func = isArray(collection) ? arrayEvery : baseEvery; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Iterates over elements of `collection`, returning an array of all elements + * `predicate` returns truthy for. The predicate is invoked with three + * arguments: (value, index|key, collection). + * + * **Note:** Unlike `_.remove`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + * @see _.reject + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * _.filter(users, function(o) { return !o.active; }); + * // => objects for ['fred'] + * + * // The `_.matches` iteratee shorthand. + * _.filter(users, { 'age': 36, 'active': true }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.filter(users, ['active', false]); + * // => objects for ['fred'] + * + * // The `_.property` iteratee shorthand. + * _.filter(users, 'active'); + * // => objects for ['barney'] + */ + function filter(collection, predicate) { + var func = isArray(collection) ? arrayFilter : baseFilter; + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Iterates over elements of `collection`, returning the first element + * `predicate` returns truthy for. The predicate is invoked with three + * arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=0] The index to search from. + * @returns {*} Returns the matched element, else `undefined`. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false }, + * { 'user': 'pebbles', 'age': 1, 'active': true } + * ]; + * + * _.find(users, function(o) { return o.age < 40; }); + * // => object for 'barney' + * + * // The `_.matches` iteratee shorthand. + * _.find(users, { 'age': 1, 'active': true }); + * // => object for 'pebbles' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.find(users, ['active', false]); + * // => object for 'fred' + * + * // The `_.property` iteratee shorthand. + * _.find(users, 'active'); + * // => object for 'barney' + */ + var find = createFind(findIndex); + + /** + * This method is like `_.find` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Collection + * @param {Array|Object} collection The collection to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=collection.length-1] The index to search from. + * @returns {*} Returns the matched element, else `undefined`. + * @example + * + * _.findLast([1, 2, 3, 4], function(n) { + * return n % 2 == 1; + * }); + * // => 3 + */ + var findLast = createFind(findLastIndex); + + /** + * Creates a flattened array of values by running each element in `collection` + * thru `iteratee` and flattening the mapped results. The iteratee is invoked + * with three arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [n, n]; + * } + * + * _.flatMap([1, 2], duplicate); + * // => [1, 1, 2, 2] + */ + function flatMap(collection, iteratee) { + return baseFlatten(map(collection, iteratee), 1); + } + + /** + * This method is like `_.flatMap` except that it recursively flattens the + * mapped results. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [[[n, n]]]; + * } + * + * _.flatMapDeep([1, 2], duplicate); + * // => [1, 1, 2, 2] + */ + function flatMapDeep(collection, iteratee) { + return baseFlatten(map(collection, iteratee), INFINITY); + } + + /** + * This method is like `_.flatMap` except that it recursively flattens the + * mapped results up to `depth` times. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {number} [depth=1] The maximum recursion depth. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [[[n, n]]]; + * } + * + * _.flatMapDepth([1, 2], duplicate, 2); + * // => [[1, 1], [2, 2]] + */ + function flatMapDepth(collection, iteratee, depth) { + depth = depth === undefined ? 1 : toInteger(depth); + return baseFlatten(map(collection, iteratee), depth); + } + + /** + * Iterates over elements of `collection` and invokes `iteratee` for each element. + * The iteratee is invoked with three arguments: (value, index|key, collection). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * **Note:** As with other "Collections" methods, objects with a "length" + * property are iterated like arrays. To avoid this behavior use `_.forIn` + * or `_.forOwn` for object iteration. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @alias each + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @see _.forEachRight + * @example + * + * _.forEach([1, 2], function(value) { + * console.log(value); + * }); + * // => Logs `1` then `2`. + * + * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a' then 'b' (iteration order is not guaranteed). + */ + function forEach(collection, iteratee) { + var func = isArray(collection) ? arrayEach : baseEach; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.forEach` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @alias eachRight + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @see _.forEach + * @example + * + * _.forEachRight([1, 2], function(value) { + * console.log(value); + * }); + * // => Logs `2` then `1`. + */ + function forEachRight(collection, iteratee) { + var func = isArray(collection) ? arrayEachRight : baseEachRight; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The order of grouped values + * is determined by the order they occur in `collection`. The corresponding + * value of each key is an array of elements responsible for generating the + * key. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.groupBy([6.1, 4.2, 6.3], Math.floor); + * // => { '4': [4.2], '6': [6.1, 6.3] } + * + * // The `_.property` iteratee shorthand. + * _.groupBy(['one', 'two', 'three'], 'length'); + * // => { '3': ['one', 'two'], '5': ['three'] } + */ + var groupBy = createAggregator(function (result, value, key) { + if (hasOwnProperty.call(result, key)) { + result[key].push(value); + } else { + baseAssignValue(result, key, [value]); + } + }); + + /** + * Checks if `value` is in `collection`. If `collection` is a string, it's + * checked for a substring of `value`, otherwise + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * is used for equality comparisons. If `fromIndex` is negative, it's used as + * the offset from the end of `collection`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. + * @returns {boolean} Returns `true` if `value` is found, else `false`. + * @example + * + * _.includes([1, 2, 3], 1); + * // => true + * + * _.includes([1, 2, 3], 1, 2); + * // => false + * + * _.includes({ 'a': 1, 'b': 2 }, 1); + * // => true + * + * _.includes('abcd', 'bc'); + * // => true + */ + function includes(collection, value, fromIndex, guard) { + collection = isArrayLike(collection) ? collection : values(collection); + fromIndex = fromIndex && !guard ? toInteger(fromIndex) : 0; + + var length = collection.length; + if (fromIndex < 0) { + fromIndex = nativeMax(length + fromIndex, 0); + } + return isString(collection) + ? fromIndex <= length && collection.indexOf(value, fromIndex) > -1 + : !!length && baseIndexOf(collection, value, fromIndex) > -1; + } + + /** + * Invokes the method at `path` of each element in `collection`, returning + * an array of the results of each invoked method. Any additional arguments + * are provided to each invoked method. If `path` is a function, it's invoked + * for, and `this` bound to, each element in `collection`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Array|Function|string} path The path of the method to invoke or + * the function invoked per iteration. + * @param {...*} [args] The arguments to invoke each method with. + * @returns {Array} Returns the array of results. + * @example + * + * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort'); + * // => [[1, 5, 7], [1, 2, 3]] + * + * _.invokeMap([123, 456], String.prototype.split, ''); + * // => [['1', '2', '3'], ['4', '5', '6']] + */ + var invokeMap = baseRest(function (collection, path, args) { + var index = -1, + isFunc = typeof path == 'function', + result = isArrayLike(collection) ? Array(collection.length) : []; + + baseEach(collection, function (value) { + result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args); + }); + return result; + }); + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The corresponding value of + * each key is the last element responsible for generating the key. The + * iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * var array = [ + * { 'dir': 'left', 'code': 97 }, + * { 'dir': 'right', 'code': 100 } + * ]; + * + * _.keyBy(array, function(o) { + * return String.fromCharCode(o.code); + * }); + * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } + * + * _.keyBy(array, 'dir'); + * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } } + */ + var keyBy = createAggregator(function (result, value, key) { + baseAssignValue(result, key, value); + }); + + /** + * Creates an array of values by running each element in `collection` thru + * `iteratee`. The iteratee is invoked with three arguments: + * (value, index|key, collection). + * + * Many lodash methods are guarded to work as iteratees for methods like + * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`. + * + * The guarded methods are: + * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`, + * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`, + * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`, + * `template`, `trim`, `trimEnd`, `trimStart`, and `words` + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + * @example + * + * function square(n) { + * return n * n; + * } + * + * _.map([4, 8], square); + * // => [16, 64] + * + * _.map({ 'a': 4, 'b': 8 }, square); + * // => [16, 64] (iteration order is not guaranteed) + * + * var users = [ + * { 'user': 'barney' }, + * { 'user': 'fred' } + * ]; + * + * // The `_.property` iteratee shorthand. + * _.map(users, 'user'); + * // => ['barney', 'fred'] + */ + function map(collection, iteratee) { + var func = isArray(collection) ? arrayMap : baseMap; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.sortBy` except that it allows specifying the sort + * orders of the iteratees to sort by. If `orders` is unspecified, all values + * are sorted in ascending order. Otherwise, specify an order of "desc" for + * descending or "asc" for ascending sort order of corresponding values. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]] + * The iteratees to sort by. + * @param {string[]} [orders] The sort orders of `iteratees`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. + * @returns {Array} Returns the new sorted array. + * @example + * + * var users = [ + * { 'user': 'fred', 'age': 48 }, + * { 'user': 'barney', 'age': 34 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'barney', 'age': 36 } + * ]; + * + * // Sort by `user` in ascending order and by `age` in descending order. + * _.orderBy(users, ['user', 'age'], ['asc', 'desc']); + * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] + */ + function orderBy(collection, iteratees, orders, guard) { + if (collection == null) { + return []; + } + if (!isArray(iteratees)) { + iteratees = iteratees == null ? [] : [iteratees]; + } + orders = guard ? undefined : orders; + if (!isArray(orders)) { + orders = orders == null ? [] : [orders]; + } + return baseOrderBy(collection, iteratees, orders); + } + + /** + * Creates an array of elements split into two groups, the first of which + * contains elements `predicate` returns truthy for, the second of which + * contains elements `predicate` returns falsey for. The predicate is + * invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the array of grouped elements. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': true }, + * { 'user': 'pebbles', 'age': 1, 'active': false } + * ]; + * + * _.partition(users, function(o) { return o.active; }); + * // => objects for [['fred'], ['barney', 'pebbles']] + * + * // The `_.matches` iteratee shorthand. + * _.partition(users, { 'age': 1, 'active': false }); + * // => objects for [['pebbles'], ['barney', 'fred']] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.partition(users, ['active', false]); + * // => objects for [['barney', 'pebbles'], ['fred']] + * + * // The `_.property` iteratee shorthand. + * _.partition(users, 'active'); + * // => objects for [['fred'], ['barney', 'pebbles']] + */ + var partition = createAggregator( + function (result, value, key) { + result[key ? 0 : 1].push(value); + }, + function () { + return [[], []]; + } + ); + + /** + * Reduces `collection` to a value which is the accumulated result of running + * each element in `collection` thru `iteratee`, where each successive + * invocation is supplied the return value of the previous. If `accumulator` + * is not given, the first element of `collection` is used as the initial + * value. The iteratee is invoked with four arguments: + * (accumulator, value, index|key, collection). + * + * Many lodash methods are guarded to work as iteratees for methods like + * `_.reduce`, `_.reduceRight`, and `_.transform`. + * + * The guarded methods are: + * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`, + * and `sortBy` + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @returns {*} Returns the accumulated value. + * @see _.reduceRight + * @example + * + * _.reduce([1, 2], function(sum, n) { + * return sum + n; + * }, 0); + * // => 3 + * + * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { + * (result[value] || (result[value] = [])).push(key); + * return result; + * }, {}); + * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed) + */ + function reduce(collection, iteratee, accumulator) { + var func = isArray(collection) ? arrayReduce : baseReduce, + initAccum = arguments.length < 3; + + return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach); + } + + /** + * This method is like `_.reduce` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @returns {*} Returns the accumulated value. + * @see _.reduce + * @example + * + * var array = [[0, 1], [2, 3], [4, 5]]; + * + * _.reduceRight(array, function(flattened, other) { + * return flattened.concat(other); + * }, []); + * // => [4, 5, 2, 3, 0, 1] + */ + function reduceRight(collection, iteratee, accumulator) { + var func = isArray(collection) ? arrayReduceRight : baseReduce, + initAccum = arguments.length < 3; + + return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight); + } + + /** + * The opposite of `_.filter`; this method returns the elements of `collection` + * that `predicate` does **not** return truthy for. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + * @see _.filter + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': true } + * ]; + * + * _.reject(users, function(o) { return !o.active; }); + * // => objects for ['fred'] + * + * // The `_.matches` iteratee shorthand. + * _.reject(users, { 'age': 40, 'active': true }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.reject(users, ['active', false]); + * // => objects for ['fred'] + * + * // The `_.property` iteratee shorthand. + * _.reject(users, 'active'); + * // => objects for ['barney'] + */ + function reject(collection, predicate) { + var func = isArray(collection) ? arrayFilter : baseFilter; + return func(collection, negate(getIteratee(predicate, 3))); + } + + /** + * Gets a random element from `collection`. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Collection + * @param {Array|Object} collection The collection to sample. + * @returns {*} Returns the random element. + * @example + * + * _.sample([1, 2, 3, 4]); + * // => 2 + */ + function sample(collection) { + var func = isArray(collection) ? arraySample : baseSample; + return func(collection); + } + + /** + * Gets `n` random elements at unique keys from `collection` up to the + * size of `collection`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to sample. + * @param {number} [n=1] The number of elements to sample. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the random elements. + * @example + * + * _.sampleSize([1, 2, 3], 2); + * // => [3, 1] + * + * _.sampleSize([1, 2, 3], 4); + * // => [2, 3, 1] + */ + function sampleSize(collection, n, guard) { + if (guard ? isIterateeCall(collection, n, guard) : n === undefined) { + n = 1; + } else { + n = toInteger(n); + } + var func = isArray(collection) ? arraySampleSize : baseSampleSize; + return func(collection, n); + } + + /** + * Creates an array of shuffled values, using a version of the + * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to shuffle. + * @returns {Array} Returns the new shuffled array. + * @example + * + * _.shuffle([1, 2, 3, 4]); + * // => [4, 1, 3, 2] + */ + function shuffle(collection) { + var func = isArray(collection) ? arrayShuffle : baseShuffle; + return func(collection); + } + + /** + * Gets the size of `collection` by returning its length for array-like + * values or the number of own enumerable string keyed properties for objects. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @returns {number} Returns the collection size. + * @example + * + * _.size([1, 2, 3]); + * // => 3 + * + * _.size({ 'a': 1, 'b': 2 }); + * // => 2 + * + * _.size('pebbles'); + * // => 7 + */ + function size(collection) { + if (collection == null) { + return 0; + } + if (isArrayLike(collection)) { + return isString(collection) ? stringSize(collection) : collection.length; + } + var tag = getTag(collection); + if (tag == mapTag || tag == setTag) { + return collection.size; + } + return baseKeys(collection).length; + } + + /** + * Checks if `predicate` returns truthy for **any** element of `collection`. + * Iteration is stopped once `predicate` returns truthy. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + * @example + * + * _.some([null, 0, 'yes', false], Boolean); + * // => true + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.some(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.some(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.some(users, 'active'); + * // => true + */ + function some(collection, predicate, guard) { + var func = isArray(collection) ? arraySome : baseSome; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Creates an array of elements, sorted in ascending order by the results of + * running each element in a collection thru each iteratee. This method + * performs a stable sort, that is, it preserves the original sort order of + * equal elements. The iteratees are invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {...(Function|Function[])} [iteratees=[_.identity]] + * The iteratees to sort by. + * @returns {Array} Returns the new sorted array. + * @example + * + * var users = [ + * { 'user': 'fred', 'age': 48 }, + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'barney', 'age': 34 } + * ]; + * + * _.sortBy(users, [function(o) { return o.user; }]); + * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] + * + * _.sortBy(users, ['user', 'age']); + * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]] + */ + var sortBy = baseRest(function (collection, iteratees) { + if (collection == null) { + return []; + } + var length = iteratees.length; + if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) { + iteratees = []; + } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) { + iteratees = [iteratees[0]]; + } + return baseOrderBy(collection, baseFlatten(iteratees, 1), []); + }); + + /*------------------------------------------------------------------------*/ + + /** + * Gets the timestamp of the number of milliseconds that have elapsed since + * the Unix epoch (1 January 1970 00:00:00 UTC). + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Date + * @returns {number} Returns the timestamp. + * @example + * + * _.defer(function(stamp) { + * console.log(_.now() - stamp); + * }, _.now()); + * // => Logs the number of milliseconds it took for the deferred invocation. + */ + var now = + ctxNow || + function () { + return root.Date.now(); + }; + + /*------------------------------------------------------------------------*/ + + /** + * The opposite of `_.before`; this method creates a function that invokes + * `func` once it's called `n` or more times. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {number} n The number of calls before `func` is invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var saves = ['profile', 'settings']; + * + * var done = _.after(saves.length, function() { + * console.log('done saving!'); + * }); + * + * _.forEach(saves, function(type) { + * asyncSave({ 'type': type, 'complete': done }); + * }); + * // => Logs 'done saving!' after the two async saves have completed. + */ + function after(n, func) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + n = toInteger(n); + return function () { + if (--n < 1) { + return func.apply(this, arguments); + } + }; + } + + /** + * Creates a function that invokes `func`, with up to `n` arguments, + * ignoring any additional arguments. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to cap arguments for. + * @param {number} [n=func.length] The arity cap. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new capped function. + * @example + * + * _.map(['6', '8', '10'], _.ary(parseInt, 1)); + * // => [6, 8, 10] + */ + function ary(func, n, guard) { + n = guard ? undefined : n; + n = func && n == null ? func.length : n; + return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n); + } + + /** + * Creates a function that invokes `func`, with the `this` binding and arguments + * of the created function, while it's called less than `n` times. Subsequent + * calls to the created function return the result of the last `func` invocation. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {number} n The number of calls at which `func` is no longer invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * jQuery(element).on('click', _.before(5, addContactToList)); + * // => Allows adding up to 4 contacts to the list. + */ + function before(n, func) { + var result; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + n = toInteger(n); + return function () { + if (--n > 0) { + result = func.apply(this, arguments); + } + if (n <= 1) { + func = undefined; + } + return result; + }; + } + + /** + * Creates a function that invokes `func` with the `this` binding of `thisArg` + * and `partials` prepended to the arguments it receives. + * + * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for partially applied arguments. + * + * **Note:** Unlike native `Function#bind`, this method doesn't set the "length" + * property of bound functions. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to bind. + * @param {*} thisArg The `this` binding of `func`. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * function greet(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * + * var object = { 'user': 'fred' }; + * + * var bound = _.bind(greet, object, 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * // Bound with placeholders. + * var bound = _.bind(greet, object, _, '!'); + * bound('hi'); + * // => 'hi fred!' + */ + var bind = baseRest(function (func, thisArg, partials) { + var bitmask = WRAP_BIND_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bind)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(func, bitmask, thisArg, partials, holders); + }); + + /** + * Creates a function that invokes the method at `object[key]` with `partials` + * prepended to the arguments it receives. + * + * This method differs from `_.bind` by allowing bound functions to reference + * methods that may be redefined or don't yet exist. See + * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern) + * for more details. + * + * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * @static + * @memberOf _ + * @since 0.10.0 + * @category Function + * @param {Object} object The object to invoke the method on. + * @param {string} key The key of the method. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * var object = { + * 'user': 'fred', + * 'greet': function(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * }; + * + * var bound = _.bindKey(object, 'greet', 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * object.greet = function(greeting, punctuation) { + * return greeting + 'ya ' + this.user + punctuation; + * }; + * + * bound('!'); + * // => 'hiya fred!' + * + * // Bound with placeholders. + * var bound = _.bindKey(object, 'greet', _, '!'); + * bound('hi'); + * // => 'hiya fred!' + */ + var bindKey = baseRest(function (object, key, partials) { + var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bindKey)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(key, bitmask, object, partials, holders); + }); + + /** + * Creates a function that accepts arguments of `func` and either invokes + * `func` returning its result, if at least `arity` number of arguments have + * been provided, or returns a function that accepts the remaining `func` + * arguments, and so on. The arity of `func` may be specified if `func.length` + * is not sufficient. + * + * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for provided arguments. + * + * **Note:** This method doesn't set the "length" property of curried functions. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Function + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new curried function. + * @example + * + * var abc = function(a, b, c) { + * return [a, b, c]; + * }; + * + * var curried = _.curry(abc); + * + * curried(1)(2)(3); + * // => [1, 2, 3] + * + * curried(1, 2)(3); + * // => [1, 2, 3] + * + * curried(1, 2, 3); + * // => [1, 2, 3] + * + * // Curried with placeholders. + * curried(1)(_, 3)(2); + * // => [1, 2, 3] + */ + function curry(func, arity, guard) { + arity = guard ? undefined : arity; + var result = createWrap( + func, + WRAP_CURRY_FLAG, + undefined, + undefined, + undefined, + undefined, + undefined, + arity + ); + result.placeholder = curry.placeholder; + return result; + } + + /** + * This method is like `_.curry` except that arguments are applied to `func` + * in the manner of `_.partialRight` instead of `_.partial`. + * + * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for provided arguments. + * + * **Note:** This method doesn't set the "length" property of curried functions. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new curried function. + * @example + * + * var abc = function(a, b, c) { + * return [a, b, c]; + * }; + * + * var curried = _.curryRight(abc); + * + * curried(3)(2)(1); + * // => [1, 2, 3] + * + * curried(2, 3)(1); + * // => [1, 2, 3] + * + * curried(1, 2, 3); + * // => [1, 2, 3] + * + * // Curried with placeholders. + * curried(3)(1, _)(2); + * // => [1, 2, 3] + */ + function curryRight(func, arity, guard) { + arity = guard ? undefined : arity; + var result = createWrap( + func, + WRAP_CURRY_RIGHT_FLAG, + undefined, + undefined, + undefined, + undefined, + undefined, + arity + ); + result.placeholder = curryRight.placeholder; + return result; + } + + /** + * Creates a debounced function that delays invoking `func` until after `wait` + * milliseconds have elapsed since the last time the debounced function was + * invoked. The debounced function comes with a `cancel` method to cancel + * delayed `func` invocations and a `flush` method to immediately invoke them. + * Provide `options` to indicate whether `func` should be invoked on the + * leading and/or trailing edge of the `wait` timeout. The `func` is invoked + * with the last arguments provided to the debounced function. Subsequent + * calls to the debounced function return the result of the last `func` + * invocation. + * + * **Note:** If `leading` and `trailing` options are `true`, `func` is + * invoked on the trailing edge of the timeout only if the debounced function + * is invoked more than once during the `wait` timeout. + * + * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred + * until to the next tick, similar to `setTimeout` with a timeout of `0`. + * + * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) + * for details over the differences between `_.debounce` and `_.throttle`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to debounce. + * @param {number} [wait=0] The number of milliseconds to delay. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.leading=false] + * Specify invoking on the leading edge of the timeout. + * @param {number} [options.maxWait] + * The maximum time `func` is allowed to be delayed before it's invoked. + * @param {boolean} [options.trailing=true] + * Specify invoking on the trailing edge of the timeout. + * @returns {Function} Returns the new debounced function. + * @example + * + * // Avoid costly calculations while the window size is in flux. + * jQuery(window).on('resize', _.debounce(calculateLayout, 150)); + * + * // Invoke `sendMail` when clicked, debouncing subsequent calls. + * jQuery(element).on('click', _.debounce(sendMail, 300, { + * 'leading': true, + * 'trailing': false + * })); + * + * // Ensure `batchLog` is invoked once after 1 second of debounced calls. + * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 }); + * var source = new EventSource('/stream'); + * jQuery(source).on('message', debounced); + * + * // Cancel the trailing debounced invocation. + * jQuery(window).on('popstate', debounced.cancel); + */ + function debounce(func, wait, options) { + var lastArgs, + lastThis, + maxWait, + result, + timerId, + lastCallTime, + lastInvokeTime = 0, + leading = false, + maxing = false, + trailing = true; + + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + wait = toNumber(wait) || 0; + if (isObject(options)) { + leading = !!options.leading; + maxing = 'maxWait' in options; + maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait; + trailing = 'trailing' in options ? !!options.trailing : trailing; + } + + function invokeFunc(time) { + var args = lastArgs, + thisArg = lastThis; + + lastArgs = lastThis = undefined; + lastInvokeTime = time; + result = func.apply(thisArg, args); + return result; + } + + function leadingEdge(time) { + // Reset any `maxWait` timer. + lastInvokeTime = time; + // Start the timer for the trailing edge. + timerId = setTimeout(timerExpired, wait); + // Invoke the leading edge. + return leading ? invokeFunc(time) : result; + } + + function remainingWait(time) { + var timeSinceLastCall = time - lastCallTime, + timeSinceLastInvoke = time - lastInvokeTime, + timeWaiting = wait - timeSinceLastCall; + + return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting; + } + + function shouldInvoke(time) { + var timeSinceLastCall = time - lastCallTime, + timeSinceLastInvoke = time - lastInvokeTime; + + // Either this is the first call, activity has stopped and we're at the + // trailing edge, the system time has gone backwards and we're treating + // it as the trailing edge, or we've hit the `maxWait` limit. + return ( + lastCallTime === undefined || + timeSinceLastCall >= wait || + timeSinceLastCall < 0 || + (maxing && timeSinceLastInvoke >= maxWait) + ); + } + + function timerExpired() { + var time = now(); + if (shouldInvoke(time)) { + return trailingEdge(time); + } + // Restart the timer. + timerId = setTimeout(timerExpired, remainingWait(time)); + } + + function trailingEdge(time) { + timerId = undefined; + + // Only invoke if we have `lastArgs` which means `func` has been + // debounced at least once. + if (trailing && lastArgs) { + return invokeFunc(time); + } + lastArgs = lastThis = undefined; + return result; + } + + function cancel() { + if (timerId !== undefined) { + clearTimeout(timerId); + } + lastInvokeTime = 0; + lastArgs = lastCallTime = lastThis = timerId = undefined; + } + + function flush() { + return timerId === undefined ? result : trailingEdge(now()); + } + + function debounced() { + var time = now(), + isInvoking = shouldInvoke(time); + + lastArgs = arguments; + lastThis = this; + lastCallTime = time; + + if (isInvoking) { + if (timerId === undefined) { + return leadingEdge(lastCallTime); + } + if (maxing) { + // Handle invocations in a tight loop. + timerId = setTimeout(timerExpired, wait); + return invokeFunc(lastCallTime); + } + } + if (timerId === undefined) { + timerId = setTimeout(timerExpired, wait); + } + return result; + } + debounced.cancel = cancel; + debounced.flush = flush; + return debounced; + } + + /** + * Defers invoking the `func` until the current call stack has cleared. Any + * additional arguments are provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to defer. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {number} Returns the timer id. + * @example + * + * _.defer(function(text) { + * console.log(text); + * }, 'deferred'); + * // => Logs 'deferred' after one millisecond. + */ + var defer = baseRest(function (func, args) { + return baseDelay(func, 1, args); + }); + + /** + * Invokes `func` after `wait` milliseconds. Any additional arguments are + * provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {number} Returns the timer id. + * @example + * + * _.delay(function(text) { + * console.log(text); + * }, 1000, 'later'); + * // => Logs 'later' after one second. + */ + var delay = baseRest(function (func, wait, args) { + return baseDelay(func, toNumber(wait) || 0, args); + }); + + /** + * Creates a function that invokes `func` with arguments reversed. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to flip arguments for. + * @returns {Function} Returns the new flipped function. + * @example + * + * var flipped = _.flip(function() { + * return _.toArray(arguments); + * }); + * + * flipped('a', 'b', 'c', 'd'); + * // => ['d', 'c', 'b', 'a'] + */ + function flip(func) { + return createWrap(func, WRAP_FLIP_FLAG); + } + + /** + * Creates a function that memoizes the result of `func`. If `resolver` is + * provided, it determines the cache key for storing the result based on the + * arguments provided to the memoized function. By default, the first argument + * provided to the memoized function is used as the map cache key. The `func` + * is invoked with the `this` binding of the memoized function. + * + * **Note:** The cache is exposed as the `cache` property on the memoized + * function. Its creation may be customized by replacing the `_.memoize.Cache` + * constructor with one whose instances implement the + * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object) + * method interface of `clear`, `delete`, `get`, `has`, and `set`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to have its output memoized. + * @param {Function} [resolver] The function to resolve the cache key. + * @returns {Function} Returns the new memoized function. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * var other = { 'c': 3, 'd': 4 }; + * + * var values = _.memoize(_.values); + * values(object); + * // => [1, 2] + * + * values(other); + * // => [3, 4] + * + * object.a = 2; + * values(object); + * // => [1, 2] + * + * // Modify the result cache. + * values.cache.set(object, ['a', 'b']); + * values(object); + * // => ['a', 'b'] + * + * // Replace `_.memoize.Cache`. + * _.memoize.Cache = WeakMap; + */ + function memoize(func, resolver) { + if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) { + throw new TypeError(FUNC_ERROR_TEXT); + } + var memoized = function () { + var args = arguments, + key = resolver ? resolver.apply(this, args) : args[0], + cache = memoized.cache; + + if (cache.has(key)) { + return cache.get(key); + } + var result = func.apply(this, args); + memoized.cache = cache.set(key, result) || cache; + return result; + }; + memoized.cache = new (memoize.Cache || MapCache)(); + return memoized; + } + + // Expose `MapCache`. + memoize.Cache = MapCache; + + /** + * Creates a function that negates the result of the predicate `func`. The + * `func` predicate is invoked with the `this` binding and arguments of the + * created function. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} predicate The predicate to negate. + * @returns {Function} Returns the new negated function. + * @example + * + * function isEven(n) { + * return n % 2 == 0; + * } + * + * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven)); + * // => [1, 3, 5] + */ + function negate(predicate) { + if (typeof predicate != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return function () { + var args = arguments; + switch (args.length) { + case 0: + return !predicate.call(this); + case 1: + return !predicate.call(this, args[0]); + case 2: + return !predicate.call(this, args[0], args[1]); + case 3: + return !predicate.call(this, args[0], args[1], args[2]); + } + return !predicate.apply(this, args); + }; + } + + /** + * Creates a function that is restricted to invoking `func` once. Repeat calls + * to the function return the value of the first invocation. The `func` is + * invoked with the `this` binding and arguments of the created function. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var initialize = _.once(createApplication); + * initialize(); + * initialize(); + * // => `createApplication` is invoked once + */ + function once(func) { + return before(2, func); + } + + /** + * Creates a function that invokes `func` with its arguments transformed. + * + * @static + * @since 4.0.0 + * @memberOf _ + * @category Function + * @param {Function} func The function to wrap. + * @param {...(Function|Function[])} [transforms=[_.identity]] + * The argument transforms. + * @returns {Function} Returns the new function. + * @example + * + * function doubled(n) { + * return n * 2; + * } + * + * function square(n) { + * return n * n; + * } + * + * var func = _.overArgs(function(x, y) { + * return [x, y]; + * }, [square, doubled]); + * + * func(9, 3); + * // => [81, 6] + * + * func(10, 5); + * // => [100, 10] + */ + var overArgs = castRest(function (func, transforms) { + transforms = + transforms.length == 1 && isArray(transforms[0]) + ? arrayMap(transforms[0], baseUnary(getIteratee())) + : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee())); + + var funcsLength = transforms.length; + return baseRest(function (args) { + var index = -1, + length = nativeMin(args.length, funcsLength); + + while (++index < length) { + args[index] = transforms[index].call(this, args[index]); + } + return apply(func, this, args); + }); + }); + + /** + * Creates a function that invokes `func` with `partials` prepended to the + * arguments it receives. This method is like `_.bind` except it does **not** + * alter the `this` binding. + * + * The `_.partial.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * **Note:** This method doesn't set the "length" property of partially + * applied functions. + * + * @static + * @memberOf _ + * @since 0.2.0 + * @category Function + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * function greet(greeting, name) { + * return greeting + ' ' + name; + * } + * + * var sayHelloTo = _.partial(greet, 'hello'); + * sayHelloTo('fred'); + * // => 'hello fred' + * + * // Partially applied with placeholders. + * var greetFred = _.partial(greet, _, 'fred'); + * greetFred('hi'); + * // => 'hi fred' + */ + var partial = baseRest(function (func, partials) { + var holders = replaceHolders(partials, getHolder(partial)); + return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders); + }); + + /** + * This method is like `_.partial` except that partially applied arguments + * are appended to the arguments it receives. + * + * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * **Note:** This method doesn't set the "length" property of partially + * applied functions. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Function + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * function greet(greeting, name) { + * return greeting + ' ' + name; + * } + * + * var greetFred = _.partialRight(greet, 'fred'); + * greetFred('hi'); + * // => 'hi fred' + * + * // Partially applied with placeholders. + * var sayHelloTo = _.partialRight(greet, 'hello', _); + * sayHelloTo('fred'); + * // => 'hello fred' + */ + var partialRight = baseRest(function (func, partials) { + var holders = replaceHolders(partials, getHolder(partialRight)); + return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders); + }); + + /** + * Creates a function that invokes `func` with arguments arranged according + * to the specified `indexes` where the argument value at the first index is + * provided as the first argument, the argument value at the second index is + * provided as the second argument, and so on. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to rearrange arguments for. + * @param {...(number|number[])} indexes The arranged argument indexes. + * @returns {Function} Returns the new function. + * @example + * + * var rearged = _.rearg(function(a, b, c) { + * return [a, b, c]; + * }, [2, 0, 1]); + * + * rearged('b', 'c', 'a') + * // => ['a', 'b', 'c'] + */ + var rearg = flatRest(function (func, indexes) { + return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes); + }); + + /** + * Creates a function that invokes `func` with the `this` binding of the + * created function and arguments from `start` and beyond provided as + * an array. + * + * **Note:** This method is based on the + * [rest parameter](https://mdn.io/rest_parameters). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.rest(function(what, names) { + * return what + ' ' + _.initial(names).join(', ') + + * (_.size(names) > 1 ? ', & ' : '') + _.last(names); + * }); + * + * say('hello', 'fred', 'barney', 'pebbles'); + * // => 'hello fred, barney, & pebbles' + */ + function rest(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = start === undefined ? start : toInteger(start); + return baseRest(func, start); + } + + /** + * Creates a function that invokes `func` with the `this` binding of the + * create function and an array of arguments much like + * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply). + * + * **Note:** This method is based on the + * [spread operator](https://mdn.io/spread_operator). + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Function + * @param {Function} func The function to spread arguments over. + * @param {number} [start=0] The start position of the spread. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.spread(function(who, what) { + * return who + ' says ' + what; + * }); + * + * say(['fred', 'hello']); + * // => 'fred says hello' + * + * var numbers = Promise.all([ + * Promise.resolve(40), + * Promise.resolve(36) + * ]); + * + * numbers.then(_.spread(function(x, y) { + * return x + y; + * })); + * // => a Promise of 76 + */ + function spread(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = start == null ? 0 : nativeMax(toInteger(start), 0); + return baseRest(function (args) { + var array = args[start], + otherArgs = castSlice(args, 0, start); + + if (array) { + arrayPush(otherArgs, array); + } + return apply(func, this, otherArgs); + }); + } + + /** + * Creates a throttled function that only invokes `func` at most once per + * every `wait` milliseconds. The throttled function comes with a `cancel` + * method to cancel delayed `func` invocations and a `flush` method to + * immediately invoke them. Provide `options` to indicate whether `func` + * should be invoked on the leading and/or trailing edge of the `wait` + * timeout. The `func` is invoked with the last arguments provided to the + * throttled function. Subsequent calls to the throttled function return the + * result of the last `func` invocation. + * + * **Note:** If `leading` and `trailing` options are `true`, `func` is + * invoked on the trailing edge of the timeout only if the throttled function + * is invoked more than once during the `wait` timeout. + * + * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred + * until to the next tick, similar to `setTimeout` with a timeout of `0`. + * + * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) + * for details over the differences between `_.throttle` and `_.debounce`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to throttle. + * @param {number} [wait=0] The number of milliseconds to throttle invocations to. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.leading=true] + * Specify invoking on the leading edge of the timeout. + * @param {boolean} [options.trailing=true] + * Specify invoking on the trailing edge of the timeout. + * @returns {Function} Returns the new throttled function. + * @example + * + * // Avoid excessively updating the position while scrolling. + * jQuery(window).on('scroll', _.throttle(updatePosition, 100)); + * + * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes. + * var throttled = _.throttle(renewToken, 300000, { 'trailing': false }); + * jQuery(element).on('click', throttled); + * + * // Cancel the trailing throttled invocation. + * jQuery(window).on('popstate', throttled.cancel); + */ + function throttle(func, wait, options) { + var leading = true, + trailing = true; + + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + if (isObject(options)) { + leading = 'leading' in options ? !!options.leading : leading; + trailing = 'trailing' in options ? !!options.trailing : trailing; + } + return debounce(func, wait, { + leading: leading, + maxWait: wait, + trailing: trailing, + }); + } + + /** + * Creates a function that accepts up to one argument, ignoring any + * additional arguments. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to cap arguments for. + * @returns {Function} Returns the new capped function. + * @example + * + * _.map(['6', '8', '10'], _.unary(parseInt)); + * // => [6, 8, 10] + */ + function unary(func) { + return ary(func, 1); + } + + /** + * Creates a function that provides `value` to `wrapper` as its first + * argument. Any additional arguments provided to the function are appended + * to those provided to the `wrapper`. The wrapper is invoked with the `this` + * binding of the created function. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {*} value The value to wrap. + * @param {Function} [wrapper=identity] The wrapper function. + * @returns {Function} Returns the new function. + * @example + * + * var p = _.wrap(_.escape, function(func, text) { + * return '

' + func(text) + '

'; + * }); + * + * p('fred, barney, & pebbles'); + * // => '

fred, barney, & pebbles

' + */ + function wrap(value, wrapper) { + return partial(castFunction(wrapper), value); + } + + /*------------------------------------------------------------------------*/ + + /** + * Casts `value` as an array if it's not one. + * + * @static + * @memberOf _ + * @since 4.4.0 + * @category Lang + * @param {*} value The value to inspect. + * @returns {Array} Returns the cast array. + * @example + * + * _.castArray(1); + * // => [1] + * + * _.castArray({ 'a': 1 }); + * // => [{ 'a': 1 }] + * + * _.castArray('abc'); + * // => ['abc'] + * + * _.castArray(null); + * // => [null] + * + * _.castArray(undefined); + * // => [undefined] + * + * _.castArray(); + * // => [] + * + * var array = [1, 2, 3]; + * console.log(_.castArray(array) === array); + * // => true + */ + function castArray() { + if (!arguments.length) { + return []; + } + var value = arguments[0]; + return isArray(value) ? value : [value]; + } + + /** + * Creates a shallow clone of `value`. + * + * **Note:** This method is loosely based on the + * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm) + * and supports cloning arrays, array buffers, booleans, date objects, maps, + * numbers, `Object` objects, regexes, sets, strings, symbols, and typed + * arrays. The own enumerable properties of `arguments` objects are cloned + * as plain objects. An empty object is returned for uncloneable values such + * as error objects, functions, DOM nodes, and WeakMaps. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to clone. + * @returns {*} Returns the cloned value. + * @see _.cloneDeep + * @example + * + * var objects = [{ 'a': 1 }, { 'b': 2 }]; + * + * var shallow = _.clone(objects); + * console.log(shallow[0] === objects[0]); + * // => true + */ + function clone(value) { + return baseClone(value, CLONE_SYMBOLS_FLAG); + } + + /** + * This method is like `_.clone` except that it accepts `customizer` which + * is invoked to produce the cloned value. If `customizer` returns `undefined`, + * cloning is handled by the method instead. The `customizer` is invoked with + * up to four arguments; (value [, index|key, object, stack]). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to clone. + * @param {Function} [customizer] The function to customize cloning. + * @returns {*} Returns the cloned value. + * @see _.cloneDeepWith + * @example + * + * function customizer(value) { + * if (_.isElement(value)) { + * return value.cloneNode(false); + * } + * } + * + * var el = _.cloneWith(document.body, customizer); + * + * console.log(el === document.body); + * // => false + * console.log(el.nodeName); + * // => 'BODY' + * console.log(el.childNodes.length); + * // => 0 + */ + function cloneWith(value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseClone(value, CLONE_SYMBOLS_FLAG, customizer); + } + + /** + * This method is like `_.clone` except that it recursively clones `value`. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Lang + * @param {*} value The value to recursively clone. + * @returns {*} Returns the deep cloned value. + * @see _.clone + * @example + * + * var objects = [{ 'a': 1 }, { 'b': 2 }]; + * + * var deep = _.cloneDeep(objects); + * console.log(deep[0] === objects[0]); + * // => false + */ + function cloneDeep(value) { + return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG); + } + + /** + * This method is like `_.cloneWith` except that it recursively clones `value`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to recursively clone. + * @param {Function} [customizer] The function to customize cloning. + * @returns {*} Returns the deep cloned value. + * @see _.cloneWith + * @example + * + * function customizer(value) { + * if (_.isElement(value)) { + * return value.cloneNode(true); + * } + * } + * + * var el = _.cloneDeepWith(document.body, customizer); + * + * console.log(el === document.body); + * // => false + * console.log(el.nodeName); + * // => 'BODY' + * console.log(el.childNodes.length); + * // => 20 + */ + function cloneDeepWith(value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer); + } + + /** + * Checks if `object` conforms to `source` by invoking the predicate + * properties of `source` with the corresponding property values of `object`. + * + * **Note:** This method is equivalent to `_.conforms` when `source` is + * partially applied. + * + * @static + * @memberOf _ + * @since 4.14.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property predicates to conform to. + * @returns {boolean} Returns `true` if `object` conforms, else `false`. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * + * _.conformsTo(object, { 'b': function(n) { return n > 1; } }); + * // => true + * + * _.conformsTo(object, { 'b': function(n) { return n > 2; } }); + * // => false + */ + function conformsTo(object, source) { + return source == null || baseConformsTo(object, source, keys(source)); + } + + /** + * Performs a + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * comparison between two values to determine if they are equivalent. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'a': 1 }; + * var other = { 'a': 1 }; + * + * _.eq(object, object); + * // => true + * + * _.eq(object, other); + * // => false + * + * _.eq('a', 'a'); + * // => true + * + * _.eq('a', Object('a')); + * // => false + * + * _.eq(NaN, NaN); + * // => true + */ + function eq(value, other) { + return value === other || (value !== value && other !== other); + } + + /** + * Checks if `value` is greater than `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than `other`, + * else `false`. + * @see _.lt + * @example + * + * _.gt(3, 1); + * // => true + * + * _.gt(3, 3); + * // => false + * + * _.gt(1, 3); + * // => false + */ + var gt = createRelationalOperation(baseGt); + + /** + * Checks if `value` is greater than or equal to `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than or equal to + * `other`, else `false`. + * @see _.lte + * @example + * + * _.gte(3, 1); + * // => true + * + * _.gte(3, 3); + * // => true + * + * _.gte(1, 3); + * // => false + */ + var gte = createRelationalOperation(function (value, other) { + return value >= other; + }); + + /** + * Checks if `value` is likely an `arguments` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an `arguments` object, + * else `false`. + * @example + * + * _.isArguments(function() { return arguments; }()); + * // => true + * + * _.isArguments([1, 2, 3]); + * // => false + */ + var isArguments = baseIsArguments( + (function () { + return arguments; + })() + ) + ? baseIsArguments + : function (value) { + return ( + isObjectLike(value) && + hasOwnProperty.call(value, 'callee') && + !propertyIsEnumerable.call(value, 'callee') + ); + }; + + /** + * Checks if `value` is classified as an `Array` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array, else `false`. + * @example + * + * _.isArray([1, 2, 3]); + * // => true + * + * _.isArray(document.body.children); + * // => false + * + * _.isArray('abc'); + * // => false + * + * _.isArray(_.noop); + * // => false + */ + var isArray = Array.isArray; + + /** + * Checks if `value` is classified as an `ArrayBuffer` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. + * @example + * + * _.isArrayBuffer(new ArrayBuffer(2)); + * // => true + * + * _.isArrayBuffer(new Array(2)); + * // => false + */ + var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer; + + /** + * Checks if `value` is array-like. A value is considered array-like if it's + * not a function and has a `value.length` that's an integer greater than or + * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is array-like, else `false`. + * @example + * + * _.isArrayLike([1, 2, 3]); + * // => true + * + * _.isArrayLike(document.body.children); + * // => true + * + * _.isArrayLike('abc'); + * // => true + * + * _.isArrayLike(_.noop); + * // => false + */ + function isArrayLike(value) { + return value != null && isLength(value.length) && !isFunction(value); + } + + /** + * This method is like `_.isArrayLike` except that it also checks if `value` + * is an object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array-like object, + * else `false`. + * @example + * + * _.isArrayLikeObject([1, 2, 3]); + * // => true + * + * _.isArrayLikeObject(document.body.children); + * // => true + * + * _.isArrayLikeObject('abc'); + * // => false + * + * _.isArrayLikeObject(_.noop); + * // => false + */ + function isArrayLikeObject(value) { + return isObjectLike(value) && isArrayLike(value); + } + + /** + * Checks if `value` is classified as a boolean primitive or object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a boolean, else `false`. + * @example + * + * _.isBoolean(false); + * // => true + * + * _.isBoolean(null); + * // => false + */ + function isBoolean(value) { + return ( + value === true || value === false || (isObjectLike(value) && baseGetTag(value) == boolTag) + ); + } + + /** + * Checks if `value` is a buffer. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a buffer, else `false`. + * @example + * + * _.isBuffer(new Buffer(2)); + * // => true + * + * _.isBuffer(new Uint8Array(2)); + * // => false + */ + var isBuffer = nativeIsBuffer || stubFalse; + + /** + * Checks if `value` is classified as a `Date` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a date object, else `false`. + * @example + * + * _.isDate(new Date); + * // => true + * + * _.isDate('Mon April 23 2012'); + * // => false + */ + var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate; + + /** + * Checks if `value` is likely a DOM element. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`. + * @example + * + * _.isElement(document.body); + * // => true + * + * _.isElement(''); + * // => false + */ + function isElement(value) { + return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value); + } + + /** + * Checks if `value` is an empty object, collection, map, or set. + * + * Objects are considered empty if they have no own enumerable string keyed + * properties. + * + * Array-like values such as `arguments` objects, arrays, buffers, strings, or + * jQuery-like collections are considered empty if they have a `length` of `0`. + * Similarly, maps and sets are considered empty if they have a `size` of `0`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is empty, else `false`. + * @example + * + * _.isEmpty(null); + * // => true + * + * _.isEmpty(true); + * // => true + * + * _.isEmpty(1); + * // => true + * + * _.isEmpty([1, 2, 3]); + * // => false + * + * _.isEmpty({ 'a': 1 }); + * // => false + */ + function isEmpty(value) { + if (value == null) { + return true; + } + if ( + isArrayLike(value) && + (isArray(value) || + typeof value == 'string' || + typeof value.splice == 'function' || + isBuffer(value) || + isTypedArray(value) || + isArguments(value)) + ) { + return !value.length; + } + var tag = getTag(value); + if (tag == mapTag || tag == setTag) { + return !value.size; + } + if (isPrototype(value)) { + return !baseKeys(value).length; + } + for (var key in value) { + if (hasOwnProperty.call(value, key)) { + return false; + } + } + return true; + } + + /** + * Performs a deep comparison between two values to determine if they are + * equivalent. + * + * **Note:** This method supports comparing arrays, array buffers, booleans, + * date objects, error objects, maps, numbers, `Object` objects, regexes, + * sets, strings, symbols, and typed arrays. `Object` objects are compared + * by their own, not inherited, enumerable properties. Functions and DOM + * nodes are compared by strict equality, i.e. `===`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'a': 1 }; + * var other = { 'a': 1 }; + * + * _.isEqual(object, other); + * // => true + * + * object === other; + * // => false + */ + function isEqual(value, other) { + return baseIsEqual(value, other); + } + + /** + * This method is like `_.isEqual` except that it accepts `customizer` which + * is invoked to compare values. If `customizer` returns `undefined`, comparisons + * are handled by the method instead. The `customizer` is invoked with up to + * six arguments: (objValue, othValue [, index|key, object, other, stack]). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * function isGreeting(value) { + * return /^h(?:i|ello)$/.test(value); + * } + * + * function customizer(objValue, othValue) { + * if (isGreeting(objValue) && isGreeting(othValue)) { + * return true; + * } + * } + * + * var array = ['hello', 'goodbye']; + * var other = ['hi', 'goodbye']; + * + * _.isEqualWith(array, other, customizer); + * // => true + */ + function isEqualWith(value, other, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + var result = customizer ? customizer(value, other) : undefined; + return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result; + } + + /** + * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`, + * `SyntaxError`, `TypeError`, or `URIError` object. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an error object, else `false`. + * @example + * + * _.isError(new Error); + * // => true + * + * _.isError(Error); + * // => false + */ + function isError(value) { + if (!isObjectLike(value)) { + return false; + } + var tag = baseGetTag(value); + return ( + tag == errorTag || + tag == domExcTag || + (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value)) + ); + } + + /** + * Checks if `value` is a finite primitive number. + * + * **Note:** This method is based on + * [`Number.isFinite`](https://mdn.io/Number/isFinite). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a finite number, else `false`. + * @example + * + * _.isFinite(3); + * // => true + * + * _.isFinite(Number.MIN_VALUE); + * // => true + * + * _.isFinite(Infinity); + * // => false + * + * _.isFinite('3'); + * // => false + */ + function isFinite(value) { + return typeof value == 'number' && nativeIsFinite(value); + } + + /** + * Checks if `value` is classified as a `Function` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a function, else `false`. + * @example + * + * _.isFunction(_); + * // => true + * + * _.isFunction(/abc/); + * // => false + */ + function isFunction(value) { + if (!isObject(value)) { + return false; + } + // The use of `Object#toString` avoids issues with the `typeof` operator + // in Safari 9 which returns 'object' for typed arrays and other constructors. + var tag = baseGetTag(value); + return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag; + } + + /** + * Checks if `value` is an integer. + * + * **Note:** This method is based on + * [`Number.isInteger`](https://mdn.io/Number/isInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an integer, else `false`. + * @example + * + * _.isInteger(3); + * // => true + * + * _.isInteger(Number.MIN_VALUE); + * // => false + * + * _.isInteger(Infinity); + * // => false + * + * _.isInteger('3'); + * // => false + */ + function isInteger(value) { + return typeof value == 'number' && value == toInteger(value); + } + + /** + * Checks if `value` is a valid array-like length. + * + * **Note:** This method is loosely based on + * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a valid length, else `false`. + * @example + * + * _.isLength(3); + * // => true + * + * _.isLength(Number.MIN_VALUE); + * // => false + * + * _.isLength(Infinity); + * // => false + * + * _.isLength('3'); + * // => false + */ + function isLength(value) { + return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER; + } + + /** + * Checks if `value` is the + * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types) + * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an object, else `false`. + * @example + * + * _.isObject({}); + * // => true + * + * _.isObject([1, 2, 3]); + * // => true + * + * _.isObject(_.noop); + * // => true + * + * _.isObject(null); + * // => false + */ + function isObject(value) { + var type = typeof value; + return value != null && (type == 'object' || type == 'function'); + } + + /** + * Checks if `value` is object-like. A value is object-like if it's not `null` + * and has a `typeof` result of "object". + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is object-like, else `false`. + * @example + * + * _.isObjectLike({}); + * // => true + * + * _.isObjectLike([1, 2, 3]); + * // => true + * + * _.isObjectLike(_.noop); + * // => false + * + * _.isObjectLike(null); + * // => false + */ + function isObjectLike(value) { + return value != null && typeof value == 'object'; + } + + /** + * Checks if `value` is classified as a `Map` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a map, else `false`. + * @example + * + * _.isMap(new Map); + * // => true + * + * _.isMap(new WeakMap); + * // => false + */ + var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap; + + /** + * Performs a partial deep comparison between `object` and `source` to + * determine if `object` contains equivalent property values. + * + * **Note:** This method is equivalent to `_.matches` when `source` is + * partially applied. + * + * Partial comparisons will match empty array and empty object `source` + * values against any array or object value, respectively. See `_.isEqual` + * for a list of supported value comparisons. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * + * _.isMatch(object, { 'b': 2 }); + * // => true + * + * _.isMatch(object, { 'b': 1 }); + * // => false + */ + function isMatch(object, source) { + return object === source || baseIsMatch(object, source, getMatchData(source)); + } + + /** + * This method is like `_.isMatch` except that it accepts `customizer` which + * is invoked to compare values. If `customizer` returns `undefined`, comparisons + * are handled by the method instead. The `customizer` is invoked with five + * arguments: (objValue, srcValue, index|key, object, source). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + * @example + * + * function isGreeting(value) { + * return /^h(?:i|ello)$/.test(value); + * } + * + * function customizer(objValue, srcValue) { + * if (isGreeting(objValue) && isGreeting(srcValue)) { + * return true; + * } + * } + * + * var object = { 'greeting': 'hello' }; + * var source = { 'greeting': 'hi' }; + * + * _.isMatchWith(object, source, customizer); + * // => true + */ + function isMatchWith(object, source, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseIsMatch(object, source, getMatchData(source), customizer); + } + + /** + * Checks if `value` is `NaN`. + * + * **Note:** This method is based on + * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as + * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for + * `undefined` and other non-number values. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. + * @example + * + * _.isNaN(NaN); + * // => true + * + * _.isNaN(new Number(NaN)); + * // => true + * + * isNaN(undefined); + * // => true + * + * _.isNaN(undefined); + * // => false + */ + function isNaN(value) { + // An `NaN` primitive is the only value that is not equal to itself. + // Perform the `toStringTag` check first to avoid errors with some + // ActiveX objects in IE. + return isNumber(value) && value != +value; + } + + /** + * Checks if `value` is a pristine native function. + * + * **Note:** This method can't reliably detect native functions in the presence + * of the core-js package because core-js circumvents this kind of detection. + * Despite multiple requests, the core-js maintainer has made it clear: any + * attempt to fix the detection will be obstructed. As a result, we're left + * with little choice but to throw an error. Unfortunately, this also affects + * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill), + * which rely on core-js. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, + * else `false`. + * @example + * + * _.isNative(Array.prototype.push); + * // => true + * + * _.isNative(_); + * // => false + */ + function isNative(value) { + if (isMaskable(value)) { + throw new Error(CORE_ERROR_TEXT); + } + return baseIsNative(value); + } + + /** + * Checks if `value` is `null`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `null`, else `false`. + * @example + * + * _.isNull(null); + * // => true + * + * _.isNull(void 0); + * // => false + */ + function isNull(value) { + return value === null; + } + + /** + * Checks if `value` is `null` or `undefined`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is nullish, else `false`. + * @example + * + * _.isNil(null); + * // => true + * + * _.isNil(void 0); + * // => true + * + * _.isNil(NaN); + * // => false + */ + function isNil(value) { + return value == null; + } + + /** + * Checks if `value` is classified as a `Number` primitive or object. + * + * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are + * classified as numbers, use the `_.isFinite` method. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a number, else `false`. + * @example + * + * _.isNumber(3); + * // => true + * + * _.isNumber(Number.MIN_VALUE); + * // => true + * + * _.isNumber(Infinity); + * // => true + * + * _.isNumber('3'); + * // => false + */ + function isNumber(value) { + return typeof value == 'number' || (isObjectLike(value) && baseGetTag(value) == numberTag); + } + + /** + * Checks if `value` is a plain object, that is, an object created by the + * `Object` constructor or one with a `[[Prototype]]` of `null`. + * + * @static + * @memberOf _ + * @since 0.8.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * _.isPlainObject(new Foo); + * // => false + * + * _.isPlainObject([1, 2, 3]); + * // => false + * + * _.isPlainObject({ 'x': 0, 'y': 0 }); + * // => true + * + * _.isPlainObject(Object.create(null)); + * // => true + */ + function isPlainObject(value) { + if (!isObjectLike(value) || baseGetTag(value) != objectTag) { + return false; + } + var proto = getPrototype(value); + if (proto === null) { + return true; + } + var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor; + return ( + typeof Ctor == 'function' && + Ctor instanceof Ctor && + funcToString.call(Ctor) == objectCtorString + ); + } + + /** + * Checks if `value` is classified as a `RegExp` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. + * @example + * + * _.isRegExp(/abc/); + * // => true + * + * _.isRegExp('/abc/'); + * // => false + */ + var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp; + + /** + * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754 + * double precision number which isn't the result of a rounded unsafe integer. + * + * **Note:** This method is based on + * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`. + * @example + * + * _.isSafeInteger(3); + * // => true + * + * _.isSafeInteger(Number.MIN_VALUE); + * // => false + * + * _.isSafeInteger(Infinity); + * // => false + * + * _.isSafeInteger('3'); + * // => false + */ + function isSafeInteger(value) { + return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER; + } + + /** + * Checks if `value` is classified as a `Set` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a set, else `false`. + * @example + * + * _.isSet(new Set); + * // => true + * + * _.isSet(new WeakSet); + * // => false + */ + var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet; + + /** + * Checks if `value` is classified as a `String` primitive or object. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a string, else `false`. + * @example + * + * _.isString('abc'); + * // => true + * + * _.isString(1); + * // => false + */ + function isString(value) { + return ( + typeof value == 'string' || + (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag) + ); + } + + /** + * Checks if `value` is classified as a `Symbol` primitive or object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a symbol, else `false`. + * @example + * + * _.isSymbol(Symbol.iterator); + * // => true + * + * _.isSymbol('abc'); + * // => false + */ + function isSymbol(value) { + return typeof value == 'symbol' || (isObjectLike(value) && baseGetTag(value) == symbolTag); + } + + /** + * Checks if `value` is classified as a typed array. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. + * @example + * + * _.isTypedArray(new Uint8Array); + * // => true + * + * _.isTypedArray([]); + * // => false + */ + var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray; + + /** + * Checks if `value` is `undefined`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. + * @example + * + * _.isUndefined(void 0); + * // => true + * + * _.isUndefined(null); + * // => false + */ + function isUndefined(value) { + return value === undefined; + } + + /** + * Checks if `value` is classified as a `WeakMap` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a weak map, else `false`. + * @example + * + * _.isWeakMap(new WeakMap); + * // => true + * + * _.isWeakMap(new Map); + * // => false + */ + function isWeakMap(value) { + return isObjectLike(value) && getTag(value) == weakMapTag; + } + + /** + * Checks if `value` is classified as a `WeakSet` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a weak set, else `false`. + * @example + * + * _.isWeakSet(new WeakSet); + * // => true + * + * _.isWeakSet(new Set); + * // => false + */ + function isWeakSet(value) { + return isObjectLike(value) && baseGetTag(value) == weakSetTag; + } + + /** + * Checks if `value` is less than `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than `other`, + * else `false`. + * @see _.gt + * @example + * + * _.lt(1, 3); + * // => true + * + * _.lt(3, 3); + * // => false + * + * _.lt(3, 1); + * // => false + */ + var lt = createRelationalOperation(baseLt); + + /** + * Checks if `value` is less than or equal to `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than or equal to + * `other`, else `false`. + * @see _.gte + * @example + * + * _.lte(1, 3); + * // => true + * + * _.lte(3, 3); + * // => true + * + * _.lte(3, 1); + * // => false + */ + var lte = createRelationalOperation(function (value, other) { + return value <= other; + }); + + /** + * Converts `value` to an array. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to convert. + * @returns {Array} Returns the converted array. + * @example + * + * _.toArray({ 'a': 1, 'b': 2 }); + * // => [1, 2] + * + * _.toArray('abc'); + * // => ['a', 'b', 'c'] + * + * _.toArray(1); + * // => [] + * + * _.toArray(null); + * // => [] + */ + function toArray(value) { + if (!value) { + return []; + } + if (isArrayLike(value)) { + return isString(value) ? stringToArray(value) : copyArray(value); + } + if (symIterator && value[symIterator]) { + return iteratorToArray(value[symIterator]()); + } + var tag = getTag(value), + func = tag == mapTag ? mapToArray : tag == setTag ? setToArray : values; + + return func(value); + } + + /** + * Converts `value` to a finite number. + * + * @static + * @memberOf _ + * @since 4.12.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted number. + * @example + * + * _.toFinite(3.2); + * // => 3.2 + * + * _.toFinite(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toFinite(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toFinite('3.2'); + * // => 3.2 + */ + function toFinite(value) { + if (!value) { + return value === 0 ? value : 0; + } + value = toNumber(value); + if (value === INFINITY || value === -INFINITY) { + var sign = value < 0 ? -1 : 1; + return sign * MAX_INTEGER; + } + return value === value ? value : 0; + } + + /** + * Converts `value` to an integer. + * + * **Note:** This method is loosely based on + * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toInteger(3.2); + * // => 3 + * + * _.toInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toInteger(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toInteger('3.2'); + * // => 3 + */ + function toInteger(value) { + var result = toFinite(value), + remainder = result % 1; + + return result === result ? (remainder ? result - remainder : result) : 0; + } + + /** + * Converts `value` to an integer suitable for use as the length of an + * array-like object. + * + * **Note:** This method is based on + * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toLength(3.2); + * // => 3 + * + * _.toLength(Number.MIN_VALUE); + * // => 0 + * + * _.toLength(Infinity); + * // => 4294967295 + * + * _.toLength('3.2'); + * // => 3 + */ + function toLength(value) { + return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0; + } + + /** + * Converts `value` to a number. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to process. + * @returns {number} Returns the number. + * @example + * + * _.toNumber(3.2); + * // => 3.2 + * + * _.toNumber(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toNumber(Infinity); + * // => Infinity + * + * _.toNumber('3.2'); + * // => 3.2 + */ + function toNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + if (isObject(value)) { + var other = typeof value.valueOf == 'function' ? value.valueOf() : value; + value = isObject(other) ? other + '' : other; + } + if (typeof value != 'string') { + return value === 0 ? value : +value; + } + value = value.replace(reTrim, ''); + var isBinary = reIsBinary.test(value); + return isBinary || reIsOctal.test(value) + ? freeParseInt(value.slice(2), isBinary ? 2 : 8) + : reIsBadHex.test(value) + ? NAN + : +value; + } + + /** + * Converts `value` to a plain object flattening inherited enumerable string + * keyed properties of `value` to own properties of the plain object. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {Object} Returns the converted plain object. + * @example + * + * function Foo() { + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.assign({ 'a': 1 }, new Foo); + * // => { 'a': 1, 'b': 2 } + * + * _.assign({ 'a': 1 }, _.toPlainObject(new Foo)); + * // => { 'a': 1, 'b': 2, 'c': 3 } + */ + function toPlainObject(value) { + return copyObject(value, keysIn(value)); + } + + /** + * Converts `value` to a safe integer. A safe integer can be compared and + * represented correctly. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toSafeInteger(3.2); + * // => 3 + * + * _.toSafeInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toSafeInteger(Infinity); + * // => 9007199254740991 + * + * _.toSafeInteger('3.2'); + * // => 3 + */ + function toSafeInteger(value) { + return value + ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) + : value === 0 + ? value + : 0; + } + + /** + * Converts `value` to a string. An empty string is returned for `null` + * and `undefined` values. The sign of `-0` is preserved. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.toString(null); + * // => '' + * + * _.toString(-0); + * // => '-0' + * + * _.toString([1, 2, 3]); + * // => '1,2,3' + */ + function toString(value) { + return value == null ? '' : baseToString(value); + } + + /*------------------------------------------------------------------------*/ + + /** + * Assigns own enumerable string keyed properties of source objects to the + * destination object. Source objects are applied from left to right. + * Subsequent sources overwrite property assignments of previous sources. + * + * **Note:** This method mutates `object` and is loosely based on + * [`Object.assign`](https://mdn.io/Object/assign). + * + * @static + * @memberOf _ + * @since 0.10.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.assignIn + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * function Bar() { + * this.c = 3; + * } + * + * Foo.prototype.b = 2; + * Bar.prototype.d = 4; + * + * _.assign({ 'a': 0 }, new Foo, new Bar); + * // => { 'a': 1, 'c': 3 } + */ + var assign = createAssigner(function (object, source) { + if (isPrototype(source) || isArrayLike(source)) { + copyObject(source, keys(source), object); + return; + } + for (var key in source) { + if (hasOwnProperty.call(source, key)) { + assignValue(object, key, source[key]); + } + } + }); + + /** + * This method is like `_.assign` except that it iterates over own and + * inherited source properties. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias extend + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.assign + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * function Bar() { + * this.c = 3; + * } + * + * Foo.prototype.b = 2; + * Bar.prototype.d = 4; + * + * _.assignIn({ 'a': 0 }, new Foo, new Bar); + * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 } + */ + var assignIn = createAssigner(function (object, source) { + copyObject(source, keysIn(source), object); + }); + + /** + * This method is like `_.assignIn` except that it accepts `customizer` + * which is invoked to produce the assigned values. If `customizer` returns + * `undefined`, assignment is handled by the method instead. The `customizer` + * is invoked with five arguments: (objValue, srcValue, key, object, source). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias extendWith + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @see _.assignWith + * @example + * + * function customizer(objValue, srcValue) { + * return _.isUndefined(objValue) ? srcValue : objValue; + * } + * + * var defaults = _.partialRight(_.assignInWith, customizer); + * + * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var assignInWith = createAssigner(function (object, source, srcIndex, customizer) { + copyObject(source, keysIn(source), object, customizer); + }); + + /** + * This method is like `_.assign` except that it accepts `customizer` + * which is invoked to produce the assigned values. If `customizer` returns + * `undefined`, assignment is handled by the method instead. The `customizer` + * is invoked with five arguments: (objValue, srcValue, key, object, source). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @see _.assignInWith + * @example + * + * function customizer(objValue, srcValue) { + * return _.isUndefined(objValue) ? srcValue : objValue; + * } + * + * var defaults = _.partialRight(_.assignWith, customizer); + * + * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var assignWith = createAssigner(function (object, source, srcIndex, customizer) { + copyObject(source, keys(source), object, customizer); + }); + + /** + * Creates an array of values corresponding to `paths` of `object`. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Array} Returns the picked values. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; + * + * _.at(object, ['a[0].b.c', 'a[1]']); + * // => [3, 4] + */ + var at = flatRest(baseAt); + + /** + * Creates an object that inherits from the `prototype` object. If a + * `properties` object is given, its own enumerable string keyed properties + * are assigned to the created object. + * + * @static + * @memberOf _ + * @since 2.3.0 + * @category Object + * @param {Object} prototype The object to inherit from. + * @param {Object} [properties] The properties to assign to the object. + * @returns {Object} Returns the new object. + * @example + * + * function Shape() { + * this.x = 0; + * this.y = 0; + * } + * + * function Circle() { + * Shape.call(this); + * } + * + * Circle.prototype = _.create(Shape.prototype, { + * 'constructor': Circle + * }); + * + * var circle = new Circle; + * circle instanceof Circle; + * // => true + * + * circle instanceof Shape; + * // => true + */ + function create(prototype, properties) { + var result = baseCreate(prototype); + return properties == null ? result : baseAssign(result, properties); + } + + /** + * Assigns own and inherited enumerable string keyed properties of source + * objects to the destination object for all destination properties that + * resolve to `undefined`. Source objects are applied from left to right. + * Once a property is set, additional values of the same property are ignored. + * + * **Note:** This method mutates `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.defaultsDeep + * @example + * + * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var defaults = baseRest(function (object, sources) { + object = Object(object); + + var index = -1; + var length = sources.length; + var guard = length > 2 ? sources[2] : undefined; + + if (guard && isIterateeCall(sources[0], sources[1], guard)) { + length = 1; + } + + while (++index < length) { + var source = sources[index]; + var props = keysIn(source); + var propsIndex = -1; + var propsLength = props.length; + + while (++propsIndex < propsLength) { + var key = props[propsIndex]; + var value = object[key]; + + if ( + value === undefined || + (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key)) + ) { + object[key] = source[key]; + } + } + } + + return object; + }); + + /** + * This method is like `_.defaults` except that it recursively assigns + * default properties. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 3.10.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.defaults + * @example + * + * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } }); + * // => { 'a': { 'b': 2, 'c': 3 } } + */ + var defaultsDeep = baseRest(function (args) { + args.push(undefined, customDefaultsMerge); + return apply(mergeWith, undefined, args); + }); + + /** + * This method is like `_.find` except that it returns the key of the first + * element `predicate` returns truthy for instead of the element itself. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Object + * @param {Object} object The object to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {string|undefined} Returns the key of the matched element, + * else `undefined`. + * @example + * + * var users = { + * 'barney': { 'age': 36, 'active': true }, + * 'fred': { 'age': 40, 'active': false }, + * 'pebbles': { 'age': 1, 'active': true } + * }; + * + * _.findKey(users, function(o) { return o.age < 40; }); + * // => 'barney' (iteration order is not guaranteed) + * + * // The `_.matches` iteratee shorthand. + * _.findKey(users, { 'age': 1, 'active': true }); + * // => 'pebbles' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findKey(users, ['active', false]); + * // => 'fred' + * + * // The `_.property` iteratee shorthand. + * _.findKey(users, 'active'); + * // => 'barney' + */ + function findKey(object, predicate) { + return baseFindKey(object, getIteratee(predicate, 3), baseForOwn); + } + + /** + * This method is like `_.findKey` except that it iterates over elements of + * a collection in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {string|undefined} Returns the key of the matched element, + * else `undefined`. + * @example + * + * var users = { + * 'barney': { 'age': 36, 'active': true }, + * 'fred': { 'age': 40, 'active': false }, + * 'pebbles': { 'age': 1, 'active': true } + * }; + * + * _.findLastKey(users, function(o) { return o.age < 40; }); + * // => returns 'pebbles' assuming `_.findKey` returns 'barney' + * + * // The `_.matches` iteratee shorthand. + * _.findLastKey(users, { 'age': 36, 'active': true }); + * // => 'barney' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastKey(users, ['active', false]); + * // => 'fred' + * + * // The `_.property` iteratee shorthand. + * _.findLastKey(users, 'active'); + * // => 'pebbles' + */ + function findLastKey(object, predicate) { + return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight); + } + + /** + * Iterates over own and inherited enumerable string keyed properties of an + * object and invokes `iteratee` for each property. The iteratee is invoked + * with three arguments: (value, key, object). Iteratee functions may exit + * iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 0.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forInRight + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forIn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed). + */ + function forIn(object, iteratee) { + return object == null ? object : baseFor(object, getIteratee(iteratee, 3), keysIn); + } + + /** + * This method is like `_.forIn` except that it iterates over properties of + * `object` in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forIn + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forInRight(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'. + */ + function forInRight(object, iteratee) { + return object == null ? object : baseForRight(object, getIteratee(iteratee, 3), keysIn); + } + + /** + * Iterates over own enumerable string keyed properties of an object and + * invokes `iteratee` for each property. The iteratee is invoked with three + * arguments: (value, key, object). Iteratee functions may exit iteration + * early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 0.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forOwnRight + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a' then 'b' (iteration order is not guaranteed). + */ + function forOwn(object, iteratee) { + return object && baseForOwn(object, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.forOwn` except that it iterates over properties of + * `object` in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forOwn + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwnRight(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'. + */ + function forOwnRight(object, iteratee) { + return object && baseForOwnRight(object, getIteratee(iteratee, 3)); + } + + /** + * Creates an array of function property names from own enumerable properties + * of `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to inspect. + * @returns {Array} Returns the function names. + * @see _.functionsIn + * @example + * + * function Foo() { + * this.a = _.constant('a'); + * this.b = _.constant('b'); + * } + * + * Foo.prototype.c = _.constant('c'); + * + * _.functions(new Foo); + * // => ['a', 'b'] + */ + function functions(object) { + return object == null ? [] : baseFunctions(object, keys(object)); + } + + /** + * Creates an array of function property names from own and inherited + * enumerable properties of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to inspect. + * @returns {Array} Returns the function names. + * @see _.functions + * @example + * + * function Foo() { + * this.a = _.constant('a'); + * this.b = _.constant('b'); + * } + * + * Foo.prototype.c = _.constant('c'); + * + * _.functionsIn(new Foo); + * // => ['a', 'b', 'c'] + */ + function functionsIn(object) { + return object == null ? [] : baseFunctions(object, keysIn(object)); + } + + /** + * Gets the value at `path` of `object`. If the resolved value is + * `undefined`, the `defaultValue` is returned in its place. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @param {*} [defaultValue] The value returned for `undefined` resolved values. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.get(object, 'a[0].b.c'); + * // => 3 + * + * _.get(object, ['a', '0', 'b', 'c']); + * // => 3 + * + * _.get(object, 'a.b.c', 'default'); + * // => 'default' + */ + function get(object, path, defaultValue) { + var result = object == null ? undefined : baseGet(object, path); + return result === undefined ? defaultValue : result; + } + + /** + * Checks if `path` is a direct property of `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = { 'a': { 'b': 2 } }; + * var other = _.create({ 'a': _.create({ 'b': 2 }) }); + * + * _.has(object, 'a'); + * // => true + * + * _.has(object, 'a.b'); + * // => true + * + * _.has(object, ['a', 'b']); + * // => true + * + * _.has(other, 'a'); + * // => false + */ + function has(object, path) { + return object != null && hasPath(object, path, baseHas); + } + + /** + * Checks if `path` is a direct or inherited property of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = _.create({ 'a': _.create({ 'b': 2 }) }); + * + * _.hasIn(object, 'a'); + * // => true + * + * _.hasIn(object, 'a.b'); + * // => true + * + * _.hasIn(object, ['a', 'b']); + * // => true + * + * _.hasIn(object, 'b'); + * // => false + */ + function hasIn(object, path) { + return object != null && hasPath(object, path, baseHasIn); + } + + /** + * Creates an object composed of the inverted keys and values of `object`. + * If `object` contains duplicate values, subsequent values overwrite + * property assignments of previous values. + * + * @static + * @memberOf _ + * @since 0.7.0 + * @category Object + * @param {Object} object The object to invert. + * @returns {Object} Returns the new inverted object. + * @example + * + * var object = { 'a': 1, 'b': 2, 'c': 1 }; + * + * _.invert(object); + * // => { '1': 'c', '2': 'b' } + */ + var invert = createInverter(function (result, value, key) { + if (value != null && typeof value.toString != 'function') { + value = nativeObjectToString.call(value); + } + + result[value] = key; + }, constant(identity)); + + /** + * This method is like `_.invert` except that the inverted object is generated + * from the results of running each element of `object` thru `iteratee`. The + * corresponding inverted value of each inverted key is an array of keys + * responsible for generating the inverted value. The iteratee is invoked + * with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.1.0 + * @category Object + * @param {Object} object The object to invert. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Object} Returns the new inverted object. + * @example + * + * var object = { 'a': 1, 'b': 2, 'c': 1 }; + * + * _.invertBy(object); + * // => { '1': ['a', 'c'], '2': ['b'] } + * + * _.invertBy(object, function(value) { + * return 'group' + value; + * }); + * // => { 'group1': ['a', 'c'], 'group2': ['b'] } + */ + var invertBy = createInverter(function (result, value, key) { + if (value != null && typeof value.toString != 'function') { + value = nativeObjectToString.call(value); + } + + if (hasOwnProperty.call(result, value)) { + result[value].push(key); + } else { + result[value] = [key]; + } + }, getIteratee); + + /** + * Invokes the method at `path` of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the method to invoke. + * @param {...*} [args] The arguments to invoke the method with. + * @returns {*} Returns the result of the invoked method. + * @example + * + * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] }; + * + * _.invoke(object, 'a[0].b.c.slice', 1, 3); + * // => [2, 3] + */ + var invoke = baseRest(baseInvoke); + + /** + * Creates an array of the own enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. See the + * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) + * for more details. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keys(new Foo); + * // => ['a', 'b'] (iteration order is not guaranteed) + * + * _.keys('hi'); + * // => ['0', '1'] + */ + function keys(object) { + return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object); + } + + /** + * Creates an array of the own and inherited enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keysIn(new Foo); + * // => ['a', 'b', 'c'] (iteration order is not guaranteed) + */ + function keysIn(object) { + return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object); + } + + /** + * The opposite of `_.mapValues`; this method creates an object with the + * same values as `object` and keys generated by running each own enumerable + * string keyed property of `object` thru `iteratee`. The iteratee is invoked + * with three arguments: (value, key, object). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns the new mapped object. + * @see _.mapValues + * @example + * + * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) { + * return key + value; + * }); + * // => { 'a1': 1, 'b2': 2 } + */ + function mapKeys(object, iteratee) { + var result = {}; + iteratee = getIteratee(iteratee, 3); + + baseForOwn(object, function (value, key, object) { + baseAssignValue(result, iteratee(value, key, object), value); + }); + return result; + } + + /** + * Creates an object with the same keys as `object` and values generated + * by running each own enumerable string keyed property of `object` thru + * `iteratee`. The iteratee is invoked with three arguments: + * (value, key, object). + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns the new mapped object. + * @see _.mapKeys + * @example + * + * var users = { + * 'fred': { 'user': 'fred', 'age': 40 }, + * 'pebbles': { 'user': 'pebbles', 'age': 1 } + * }; + * + * _.mapValues(users, function(o) { return o.age; }); + * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) + * + * // The `_.property` iteratee shorthand. + * _.mapValues(users, 'age'); + * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) + */ + function mapValues(object, iteratee) { + var result = {}; + iteratee = getIteratee(iteratee, 3); + + baseForOwn(object, function (value, key, object) { + baseAssignValue(result, key, iteratee(value, key, object)); + }); + return result; + } + + /** + * This method is like `_.assign` except that it recursively merges own and + * inherited enumerable string keyed properties of source objects into the + * destination object. Source properties that resolve to `undefined` are + * skipped if a destination value exists. Array and plain object properties + * are merged recursively. Other objects and value types are overridden by + * assignment. Source objects are applied from left to right. Subsequent + * sources overwrite property assignments of previous sources. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @example + * + * var object = { + * 'a': [{ 'b': 2 }, { 'd': 4 }] + * }; + * + * var other = { + * 'a': [{ 'c': 3 }, { 'e': 5 }] + * }; + * + * _.merge(object, other); + * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] } + */ + var merge = createAssigner(function (object, source, srcIndex) { + baseMerge(object, source, srcIndex); + }); + + /** + * This method is like `_.merge` except that it accepts `customizer` which + * is invoked to produce the merged values of the destination and source + * properties. If `customizer` returns `undefined`, merging is handled by the + * method instead. The `customizer` is invoked with six arguments: + * (objValue, srcValue, key, object, source, stack). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} customizer The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * function customizer(objValue, srcValue) { + * if (_.isArray(objValue)) { + * return objValue.concat(srcValue); + * } + * } + * + * var object = { 'a': [1], 'b': [2] }; + * var other = { 'a': [3], 'b': [4] }; + * + * _.mergeWith(object, other, customizer); + * // => { 'a': [1, 3], 'b': [2, 4] } + */ + var mergeWith = createAssigner(function (object, source, srcIndex, customizer) { + baseMerge(object, source, srcIndex, customizer); + }); + + /** + * The opposite of `_.pick`; this method creates an object composed of the + * own and inherited enumerable property paths of `object` that are not omitted. + * + * **Note:** This method is considerably slower than `_.pick`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The source object. + * @param {...(string|string[])} [paths] The property paths to omit. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.omit(object, ['a', 'c']); + * // => { 'b': '2' } + */ + var omit = flatRest(function (object, paths) { + var result = {}; + if (object == null) { + return result; + } + var isDeep = false; + paths = arrayMap(paths, function (path) { + path = castPath(path, object); + isDeep || (isDeep = path.length > 1); + return path; + }); + copyObject(object, getAllKeysIn(object), result); + if (isDeep) { + result = baseClone( + result, + CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, + customOmitClone + ); + } + var length = paths.length; + while (length--) { + baseUnset(result, paths[length]); + } + return result; + }); + + /** + * The opposite of `_.pickBy`; this method creates an object composed of + * the own and inherited enumerable string keyed properties of `object` that + * `predicate` doesn't return truthy for. The predicate is invoked with two + * arguments: (value, key). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The source object. + * @param {Function} [predicate=_.identity] The function invoked per property. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.omitBy(object, _.isNumber); + * // => { 'b': '2' } + */ + function omitBy(object, predicate) { + return pickBy(object, negate(getIteratee(predicate))); + } + + /** + * Creates an object composed of the picked `object` properties. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The source object. + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.pick(object, ['a', 'c']); + * // => { 'a': 1, 'c': 3 } + */ + var pick = flatRest(function (object, paths) { + return object == null ? {} : basePick(object, paths); + }); + + /** + * Creates an object composed of the `object` properties `predicate` returns + * truthy for. The predicate is invoked with two arguments: (value, key). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The source object. + * @param {Function} [predicate=_.identity] The function invoked per property. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.pickBy(object, _.isNumber); + * // => { 'a': 1, 'c': 3 } + */ + function pickBy(object, predicate) { + if (object == null) { + return {}; + } + var props = arrayMap(getAllKeysIn(object), function (prop) { + return [prop]; + }); + predicate = getIteratee(predicate); + return basePickBy(object, props, function (value, path) { + return predicate(value, path[0]); + }); + } + + /** + * This method is like `_.get` except that if the resolved value is a + * function it's invoked with the `this` binding of its parent object and + * its result is returned. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to resolve. + * @param {*} [defaultValue] The value returned for `undefined` resolved values. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] }; + * + * _.result(object, 'a[0].b.c1'); + * // => 3 + * + * _.result(object, 'a[0].b.c2'); + * // => 4 + * + * _.result(object, 'a[0].b.c3', 'default'); + * // => 'default' + * + * _.result(object, 'a[0].b.c3', _.constant('default')); + * // => 'default' + */ + function result(object, path, defaultValue) { + path = castPath(path, object); + + var index = -1, + length = path.length; + + // Ensure the loop is entered when path is empty. + if (!length) { + length = 1; + object = undefined; + } + while (++index < length) { + var value = object == null ? undefined : object[toKey(path[index])]; + if (value === undefined) { + index = length; + value = defaultValue; + } + object = isFunction(value) ? value.call(object) : value; + } + return object; + } + + /** + * Sets the value at `path` of `object`. If a portion of `path` doesn't exist, + * it's created. Arrays are created for missing index properties while objects + * are created for all other missing properties. Use `_.setWith` to customize + * `path` creation. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @returns {Object} Returns `object`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.set(object, 'a[0].b.c', 4); + * console.log(object.a[0].b.c); + * // => 4 + * + * _.set(object, ['x', '0', 'y', 'z'], 5); + * console.log(object.x[0].y.z); + * // => 5 + */ + function set(object, path, value) { + return object == null ? object : baseSet(object, path, value); + } + + /** + * This method is like `_.set` except that it accepts `customizer` which is + * invoked to produce the objects of `path`. If `customizer` returns `undefined` + * path creation is handled by the method instead. The `customizer` is invoked + * with three arguments: (nsValue, key, nsObject). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * var object = {}; + * + * _.setWith(object, '[0][1]', 'a', Object); + * // => { '0': { '1': 'a' } } + */ + function setWith(object, path, value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return object == null ? object : baseSet(object, path, value, customizer); + } + + /** + * Creates an array of own enumerable string keyed-value pairs for `object` + * which can be consumed by `_.fromPairs`. If `object` is a map or set, its + * entries are returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias entries + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the key-value pairs. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.toPairs(new Foo); + * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed) + */ + var toPairs = createToPairs(keys); + + /** + * Creates an array of own and inherited enumerable string keyed-value pairs + * for `object` which can be consumed by `_.fromPairs`. If `object` is a map + * or set, its entries are returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias entriesIn + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the key-value pairs. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.toPairsIn(new Foo); + * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed) + */ + var toPairsIn = createToPairs(keysIn); + + /** + * An alternative to `_.reduce`; this method transforms `object` to a new + * `accumulator` object which is the result of running each of its own + * enumerable string keyed properties thru `iteratee`, with each invocation + * potentially mutating the `accumulator` object. If `accumulator` is not + * provided, a new object with the same `[[Prototype]]` will be used. The + * iteratee is invoked with four arguments: (accumulator, value, key, object). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 1.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The custom accumulator value. + * @returns {*} Returns the accumulated value. + * @example + * + * _.transform([2, 3, 4], function(result, n) { + * result.push(n *= n); + * return n % 2 == 0; + * }, []); + * // => [4, 9] + * + * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { + * (result[value] || (result[value] = [])).push(key); + * }, {}); + * // => { '1': ['a', 'c'], '2': ['b'] } + */ + function transform(object, iteratee, accumulator) { + var isArr = isArray(object), + isArrLike = isArr || isBuffer(object) || isTypedArray(object); + + iteratee = getIteratee(iteratee, 4); + if (accumulator == null) { + var Ctor = object && object.constructor; + if (isArrLike) { + accumulator = isArr ? new Ctor() : []; + } else if (isObject(object)) { + accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {}; + } else { + accumulator = {}; + } + } + (isArrLike ? arrayEach : baseForOwn)(object, function (value, index, object) { + return iteratee(accumulator, value, index, object); + }); + return accumulator; + } + + /** + * Removes the property at `path` of `object`. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to unset. + * @returns {boolean} Returns `true` if the property is deleted, else `false`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 7 } }] }; + * _.unset(object, 'a[0].b.c'); + * // => true + * + * console.log(object); + * // => { 'a': [{ 'b': {} }] }; + * + * _.unset(object, ['a', '0', 'b', 'c']); + * // => true + * + * console.log(object); + * // => { 'a': [{ 'b': {} }] }; + */ + function unset(object, path) { + return object == null ? true : baseUnset(object, path); + } + + /** + * This method is like `_.set` except that accepts `updater` to produce the + * value to set. Use `_.updateWith` to customize `path` creation. The `updater` + * is invoked with one argument: (value). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {Function} updater The function to produce the updated value. + * @returns {Object} Returns `object`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.update(object, 'a[0].b.c', function(n) { return n * n; }); + * console.log(object.a[0].b.c); + * // => 9 + * + * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; }); + * console.log(object.x[0].y.z); + * // => 0 + */ + function update(object, path, updater) { + return object == null ? object : baseUpdate(object, path, castFunction(updater)); + } + + /** + * This method is like `_.update` except that it accepts `customizer` which is + * invoked to produce the objects of `path`. If `customizer` returns `undefined` + * path creation is handled by the method instead. The `customizer` is invoked + * with three arguments: (nsValue, key, nsObject). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {Function} updater The function to produce the updated value. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * var object = {}; + * + * _.updateWith(object, '[0][1]', _.constant('a'), Object); + * // => { '0': { '1': 'a' } } + */ + function updateWith(object, path, updater, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer); + } + + /** + * Creates an array of the own enumerable string keyed property values of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property values. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.values(new Foo); + * // => [1, 2] (iteration order is not guaranteed) + * + * _.values('hi'); + * // => ['h', 'i'] + */ + function values(object) { + return object == null ? [] : baseValues(object, keys(object)); + } + + /** + * Creates an array of the own and inherited enumerable string keyed property + * values of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property values. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.valuesIn(new Foo); + * // => [1, 2, 3] (iteration order is not guaranteed) + */ + function valuesIn(object) { + return object == null ? [] : baseValues(object, keysIn(object)); + } + + /*------------------------------------------------------------------------*/ + + /** + * Clamps `number` within the inclusive `lower` and `upper` bounds. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Number + * @param {number} number The number to clamp. + * @param {number} [lower] The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the clamped number. + * @example + * + * _.clamp(-10, -5, 5); + * // => -5 + * + * _.clamp(10, -5, 5); + * // => 5 + */ + function clamp(number, lower, upper) { + if (upper === undefined) { + upper = lower; + lower = undefined; + } + if (upper !== undefined) { + upper = toNumber(upper); + upper = upper === upper ? upper : 0; + } + if (lower !== undefined) { + lower = toNumber(lower); + lower = lower === lower ? lower : 0; + } + return baseClamp(toNumber(number), lower, upper); + } + + /** + * Checks if `n` is between `start` and up to, but not including, `end`. If + * `end` is not specified, it's set to `start` with `start` then set to `0`. + * If `start` is greater than `end` the params are swapped to support + * negative ranges. + * + * @static + * @memberOf _ + * @since 3.3.0 + * @category Number + * @param {number} number The number to check. + * @param {number} [start=0] The start of the range. + * @param {number} end The end of the range. + * @returns {boolean} Returns `true` if `number` is in the range, else `false`. + * @see _.range, _.rangeRight + * @example + * + * _.inRange(3, 2, 4); + * // => true + * + * _.inRange(4, 8); + * // => true + * + * _.inRange(4, 2); + * // => false + * + * _.inRange(2, 2); + * // => false + * + * _.inRange(1.2, 2); + * // => true + * + * _.inRange(5.2, 4); + * // => false + * + * _.inRange(-3, -2, -6); + * // => true + */ + function inRange(number, start, end) { + start = toFinite(start); + if (end === undefined) { + end = start; + start = 0; + } else { + end = toFinite(end); + } + number = toNumber(number); + return baseInRange(number, start, end); + } + + /** + * Produces a random number between the inclusive `lower` and `upper` bounds. + * If only one argument is provided a number between `0` and the given number + * is returned. If `floating` is `true`, or either `lower` or `upper` are + * floats, a floating-point number is returned instead of an integer. + * + * **Note:** JavaScript follows the IEEE-754 standard for resolving + * floating-point values which can produce unexpected results. + * + * @static + * @memberOf _ + * @since 0.7.0 + * @category Number + * @param {number} [lower=0] The lower bound. + * @param {number} [upper=1] The upper bound. + * @param {boolean} [floating] Specify returning a floating-point number. + * @returns {number} Returns the random number. + * @example + * + * _.random(0, 5); + * // => an integer between 0 and 5 + * + * _.random(5); + * // => also an integer between 0 and 5 + * + * _.random(5, true); + * // => a floating-point number between 0 and 5 + * + * _.random(1.2, 5.2); + * // => a floating-point number between 1.2 and 5.2 + */ + function random(lower, upper, floating) { + if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) { + upper = floating = undefined; + } + if (floating === undefined) { + if (typeof upper == 'boolean') { + floating = upper; + upper = undefined; + } else if (typeof lower == 'boolean') { + floating = lower; + lower = undefined; + } + } + if (lower === undefined && upper === undefined) { + lower = 0; + upper = 1; + } else { + lower = toFinite(lower); + if (upper === undefined) { + upper = lower; + lower = 0; + } else { + upper = toFinite(upper); + } + } + if (lower > upper) { + var temp = lower; + lower = upper; + upper = temp; + } + if (floating || lower % 1 || upper % 1) { + var rand = nativeRandom(); + return nativeMin( + lower + rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1))), + upper + ); + } + return baseRandom(lower, upper); + } + + /*------------------------------------------------------------------------*/ + + /** + * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the camel cased string. + * @example + * + * _.camelCase('Foo Bar'); + * // => 'fooBar' + * + * _.camelCase('--foo-bar--'); + * // => 'fooBar' + * + * _.camelCase('__FOO_BAR__'); + * // => 'fooBar' + */ + var camelCase = createCompounder(function (result, word, index) { + word = word.toLowerCase(); + return result + (index ? capitalize(word) : word); + }); + + /** + * Converts the first character of `string` to upper case and the remaining + * to lower case. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to capitalize. + * @returns {string} Returns the capitalized string. + * @example + * + * _.capitalize('FRED'); + * // => 'Fred' + */ + function capitalize(string) { + return upperFirst(toString(string).toLowerCase()); + } + + /** + * Deburrs `string` by converting + * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table) + * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A) + * letters to basic Latin letters and removing + * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to deburr. + * @returns {string} Returns the deburred string. + * @example + * + * _.deburr('déjà vu'); + * // => 'deja vu' + */ + function deburr(string) { + string = toString(string); + return string && string.replace(reLatin, deburrLetter).replace(reComboMark, ''); + } + + /** + * Checks if `string` ends with the given target string. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {string} [target] The string to search for. + * @param {number} [position=string.length] The position to search up to. + * @returns {boolean} Returns `true` if `string` ends with `target`, + * else `false`. + * @example + * + * _.endsWith('abc', 'c'); + * // => true + * + * _.endsWith('abc', 'b'); + * // => false + * + * _.endsWith('abc', 'b', 2); + * // => true + */ + function endsWith(string, target, position) { + string = toString(string); + target = baseToString(target); + + var length = string.length; + position = position === undefined ? length : baseClamp(toInteger(position), 0, length); + + var end = position; + position -= target.length; + return position >= 0 && string.slice(position, end) == target; + } + + /** + * Converts the characters "&", "<", ">", '"', and "'" in `string` to their + * corresponding HTML entities. + * + * **Note:** No other characters are escaped. To escape additional + * characters use a third-party library like [_he_](https://mths.be/he). + * + * Though the ">" character is escaped for symmetry, characters like + * ">" and "/" don't need escaping in HTML and have no special meaning + * unless they're part of a tag or unquoted attribute value. See + * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands) + * (under "semi-related fun fact") for more details. + * + * When working with HTML you should always + * [quote attribute values](http://wonko.com/post/html-escaping) to reduce + * XSS vectors. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escape('fred, barney, & pebbles'); + * // => 'fred, barney, & pebbles' + */ + function escape(string) { + string = toString(string); + return string && reHasUnescapedHtml.test(string) + ? string.replace(reUnescapedHtml, escapeHtmlChar) + : string; + } + + /** + * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+", + * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escapeRegExp('[lodash](https://lodash.com/)'); + * // => '\[lodash\]\(https://lodash\.com/\)' + */ + function escapeRegExp(string) { + string = toString(string); + return string && reHasRegExpChar.test(string) ? string.replace(reRegExpChar, '\\$&') : string; + } + + /** + * Converts `string` to + * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the kebab cased string. + * @example + * + * _.kebabCase('Foo Bar'); + * // => 'foo-bar' + * + * _.kebabCase('fooBar'); + * // => 'foo-bar' + * + * _.kebabCase('__FOO_BAR__'); + * // => 'foo-bar' + */ + var kebabCase = createCompounder(function (result, word, index) { + return result + (index ? '-' : '') + word.toLowerCase(); + }); + + /** + * Converts `string`, as space separated words, to lower case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the lower cased string. + * @example + * + * _.lowerCase('--Foo-Bar--'); + * // => 'foo bar' + * + * _.lowerCase('fooBar'); + * // => 'foo bar' + * + * _.lowerCase('__FOO_BAR__'); + * // => 'foo bar' + */ + var lowerCase = createCompounder(function (result, word, index) { + return result + (index ? ' ' : '') + word.toLowerCase(); + }); + + /** + * Converts the first character of `string` to lower case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.lowerFirst('Fred'); + * // => 'fred' + * + * _.lowerFirst('FRED'); + * // => 'fRED' + */ + var lowerFirst = createCaseFirst('toLowerCase'); + + /** + * Pads `string` on the left and right sides if it's shorter than `length`. + * Padding characters are truncated if they can't be evenly divided by `length`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.pad('abc', 8); + * // => ' abc ' + * + * _.pad('abc', 8, '_-'); + * // => '_-abc_-_' + * + * _.pad('abc', 3); + * // => 'abc' + */ + function pad(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + if (!length || strLength >= length) { + return string; + } + var mid = (length - strLength) / 2; + return createPadding(nativeFloor(mid), chars) + string + createPadding(nativeCeil(mid), chars); + } + + /** + * Pads `string` on the right side if it's shorter than `length`. Padding + * characters are truncated if they exceed `length`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.padEnd('abc', 6); + * // => 'abc ' + * + * _.padEnd('abc', 6, '_-'); + * // => 'abc_-_' + * + * _.padEnd('abc', 3); + * // => 'abc' + */ + function padEnd(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + return length && strLength < length + ? string + createPadding(length - strLength, chars) + : string; + } + + /** + * Pads `string` on the left side if it's shorter than `length`. Padding + * characters are truncated if they exceed `length`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.padStart('abc', 6); + * // => ' abc' + * + * _.padStart('abc', 6, '_-'); + * // => '_-_abc' + * + * _.padStart('abc', 3); + * // => 'abc' + */ + function padStart(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + return length && strLength < length + ? createPadding(length - strLength, chars) + string + : string; + } + + /** + * Converts `string` to an integer of the specified radix. If `radix` is + * `undefined` or `0`, a `radix` of `10` is used unless `value` is a + * hexadecimal, in which case a `radix` of `16` is used. + * + * **Note:** This method aligns with the + * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category String + * @param {string} string The string to convert. + * @param {number} [radix=10] The radix to interpret `value` by. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {number} Returns the converted integer. + * @example + * + * _.parseInt('08'); + * // => 8 + * + * _.map(['6', '08', '10'], _.parseInt); + * // => [6, 8, 10] + */ + function parseInt(string, radix, guard) { + if (guard || radix == null) { + radix = 0; + } else if (radix) { + radix = +radix; + } + return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0); + } + + /** + * Repeats the given string `n` times. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to repeat. + * @param {number} [n=1] The number of times to repeat the string. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {string} Returns the repeated string. + * @example + * + * _.repeat('*', 3); + * // => '***' + * + * _.repeat('abc', 2); + * // => 'abcabc' + * + * _.repeat('abc', 0); + * // => '' + */ + function repeat(string, n, guard) { + if (guard ? isIterateeCall(string, n, guard) : n === undefined) { + n = 1; + } else { + n = toInteger(n); + } + return baseRepeat(toString(string), n); + } + + /** + * Replaces matches for `pattern` in `string` with `replacement`. + * + * **Note:** This method is based on + * [`String#replace`](https://mdn.io/String/replace). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to modify. + * @param {RegExp|string} pattern The pattern to replace. + * @param {Function|string} replacement The match replacement. + * @returns {string} Returns the modified string. + * @example + * + * _.replace('Hi Fred', 'Fred', 'Barney'); + * // => 'Hi Barney' + */ + function replace() { + var args = arguments, + string = toString(args[0]); + + return args.length < 3 ? string : string.replace(args[1], args[2]); + } + + /** + * Converts `string` to + * [snake case](https://en.wikipedia.org/wiki/Snake_case). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the snake cased string. + * @example + * + * _.snakeCase('Foo Bar'); + * // => 'foo_bar' + * + * _.snakeCase('fooBar'); + * // => 'foo_bar' + * + * _.snakeCase('--FOO-BAR--'); + * // => 'foo_bar' + */ + var snakeCase = createCompounder(function (result, word, index) { + return result + (index ? '_' : '') + word.toLowerCase(); + }); + + /** + * Splits `string` by `separator`. + * + * **Note:** This method is based on + * [`String#split`](https://mdn.io/String/split). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to split. + * @param {RegExp|string} separator The separator pattern to split by. + * @param {number} [limit] The length to truncate results to. + * @returns {Array} Returns the string segments. + * @example + * + * _.split('a-b-c', '-', 2); + * // => ['a', 'b'] + */ + function split(string, separator, limit) { + if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) { + separator = limit = undefined; + } + limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0; + if (!limit) { + return []; + } + string = toString(string); + if (string && (typeof separator == 'string' || (separator != null && !isRegExp(separator)))) { + separator = baseToString(separator); + if (!separator && hasUnicode(string)) { + return castSlice(stringToArray(string), 0, limit); + } + } + return string.split(separator, limit); + } + + /** + * Converts `string` to + * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage). + * + * @static + * @memberOf _ + * @since 3.1.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the start cased string. + * @example + * + * _.startCase('--foo-bar--'); + * // => 'Foo Bar' + * + * _.startCase('fooBar'); + * // => 'Foo Bar' + * + * _.startCase('__FOO_BAR__'); + * // => 'FOO BAR' + */ + var startCase = createCompounder(function (result, word, index) { + return result + (index ? ' ' : '') + upperFirst(word); + }); + + /** + * Checks if `string` starts with the given target string. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {string} [target] The string to search for. + * @param {number} [position=0] The position to search from. + * @returns {boolean} Returns `true` if `string` starts with `target`, + * else `false`. + * @example + * + * _.startsWith('abc', 'a'); + * // => true + * + * _.startsWith('abc', 'b'); + * // => false + * + * _.startsWith('abc', 'b', 1); + * // => true + */ + function startsWith(string, target, position) { + string = toString(string); + position = position == null ? 0 : baseClamp(toInteger(position), 0, string.length); + + target = baseToString(target); + return string.slice(position, position + target.length) == target; + } + + /** + * Creates a compiled template function that can interpolate data properties + * in "interpolate" delimiters, HTML-escape interpolated data properties in + * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data + * properties may be accessed as free variables in the template. If a setting + * object is given, it takes precedence over `_.templateSettings` values. + * + * **Note:** In the development build `_.template` utilizes + * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl) + * for easier debugging. + * + * For more information on precompiling templates see + * [lodash's custom builds documentation](https://lodash.com/custom-builds). + * + * For more information on Chrome extension sandboxes see + * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval). + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The template string. + * @param {Object} [options={}] The options object. + * @param {RegExp} [options.escape=_.templateSettings.escape] + * The HTML "escape" delimiter. + * @param {RegExp} [options.evaluate=_.templateSettings.evaluate] + * The "evaluate" delimiter. + * @param {Object} [options.imports=_.templateSettings.imports] + * An object to import into the template as free variables. + * @param {RegExp} [options.interpolate=_.templateSettings.interpolate] + * The "interpolate" delimiter. + * @param {string} [options.sourceURL='lodash.templateSources[n]'] + * The sourceURL of the compiled template. + * @param {string} [options.variable='obj'] + * The data object variable name. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the compiled template function. + * @example + * + * // Use the "interpolate" delimiter to create a compiled template. + * var compiled = _.template('hello <%= user %>!'); + * compiled({ 'user': 'fred' }); + * // => 'hello fred!' + * + * // Use the HTML "escape" delimiter to escape data property values. + * var compiled = _.template('<%- value %>'); + * compiled({ 'value': '