/**

* Copyright (c) Facebook, Inc. and its affiliates.

*

* This source code is licensed under the MIT license found in the

* LICENSE file in the root directory of this source tree.

*

* @format

*/

(function() {

var USE_ITERABLE_ITEMS = true;

var USE_ARRAY = true;

var USE_MAPFN = true;

var USE_THISARG = true;

var numIter = 800;

var len = 5000;

var items = USE_ITERABLE_ITEMS ? Array(len) : {};

for (var i = 0; i < len; i++) {

items[i] = i;

}

var mapfn, thisArg;

if (USE_MAPFN) {

mapfn = function(val, index) {

return val + 1;

};

}

if (USE_THISARG) {

thisArg = items;

}

if (USE_ARRAY) {

for (var i = 0; i < numIter; i++) {

Array.from(items, mapfn, thisArg);

}

} else {

for (var i = 0; i < numIter; i++) {

Array.from.call(Object, items, mapfn, thisArg);

}

}

print('done');

})();