entries.js

import keys from "./keys";

export default function entries(obj) {

  if (Object.entries) return Object.entries(obj);

  var ownProps = keys(obj),
    i = ownProps.length,
    resArray = new Array(i); // preallocate the Array

  while (i--) resArray[i] = [ownProps[i], obj[ownProps[i]]];

  return resArray;
}