text: /*!
   * is-number <https://github.com/jonschlinkert/is-number>
   *
   * Copyright (c) 2014-2017, Jon Schlinkert.
   * Released under the MIT License.
   */
  
  'use strict';
  
  module.exports = function isNumber(num) {
    var type = typeof num;
  
    if (type === 'string' || num instanceof String) {
      // an empty string would be coerced to true with the below logic
      if (!num.trim()) return false;
    } else if (type !== 'number' && !(num instanceof Number)) {
      return false;
    }
  
    return (num - num + 1) >= 0;
  };
  