'use strict';

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

module.exports = function array_sum(array) {
  // eslint-disable-line camelcase
  //  discuss at: http://locutus.io/php/array_sum/
  // original by: Kevin van Zonneveld (http://kvz.io)
  // bugfixed by: Nate
  // bugfixed by: Gilbert
  // improved by: David Pilia (http://www.beteck.it/)
  // improved by: Brett Zamir (http://brett-zamir.me)
  //   example 1: array_sum([4, 9, 182.6])
  //   returns 1: 195.6
  //   example 2: var $total = []
  //   example 2: var $index = 0.1
  //   example 2: for (var $y = 0; $y < 12; $y++){ $total[$y] = $y + $index }
  //   example 2: array_sum($total)
  //   returns 2: 67.2

  var key;
  var sum = 0;

  // input sanitation
  if ((typeof array === 'undefined' ? 'undefined' : _typeof(array)) !== 'object') {
    return null;
  }

  for (key in array) {
    if (!isNaN(parseFloat(array[key]))) {
      sum += parseFloat(array[key]);
    }
  }

  return sum;
};
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