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11 lines
255 B
11 lines
255 B
10 years ago
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'use strict';
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var toString = Object.prototype.toString
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, id = toString.call('');
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module.exports = function (x) {
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return (typeof x === 'string') || (x && (typeof x === 'object') &&
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((x instanceof String) || (toString.call(x) === id))) || false;
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};
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