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17 lines
314 B
JavaScript
17 lines
314 B
JavaScript
'use strict';
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module.exports = {
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isString: function(arg) {
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return typeof(arg) === 'string';
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},
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isObject: function(arg) {
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return typeof(arg) === 'object' && arg !== null;
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},
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isNull: function(arg) {
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return arg === null;
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},
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isNullOrUndefined: function(arg) {
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return arg == null;
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}
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};
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