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- /*!
- * is-number <https://github.com/jonschlinkert/is-number>
- *
- * Copyright (c) 2014-2015, Jon Schlinkert.
- * Licensed under the MIT License.
- */
- 'use strict';
- var typeOf = require('kind-of');
- module.exports = function isNumber(num) {
- var type = typeOf(num);
- if (type !== 'number' && type !== 'string') {
- return false;
- }
- var n = +num;
- return (n - n + 1) >= 0 && num !== '';
- };
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