react-native/Libraries/Utilities/mergeIntoFast.js

27 lines
611 B
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow
*/
'use strict';
/**
* Faster version of `mergeInto` that doesn't check its arguments and
* also copies over prototype inherited properties.
*
* @param {object} one Object to assign to.
* @param {object} two Object to assign from.
*/
const mergeIntoFast = function(one: Object, two: Object): void {
for (const keyTwo in two) {
one[keyTwo] = two[keyTwo];
}
};
module.exports = mergeIntoFast;