20 lines
562 B
JavaScript
20 lines
562 B
JavaScript
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/*!
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* is-whitespace <https://github.com/jonschlinkert/is-whitespace>
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*
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* Copyright (c) 2014-2015, Jon Schlinkert.
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* Licensed under the MIT License.
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*/
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'use strict';
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var cache;
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module.exports = function isWhitespace(str) {
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return (typeof str === 'string') && regex().test(str);
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};
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function regex() {
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// ensure that runtime compilation only happens once
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return cache || (cache = new RegExp('^[\\s\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF"]+$'));
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}
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