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966bb63a80
Summary: Replace the non-compliant `Object.assign` with a spec compliant version from Mozilla. Since its spec compliant we can apply conditionally only when a native version is not available. Reviewed By: yungsters Differential Revision: D8896359 fbshipit-source-id: 4999fe3094eba2206293bbe28760a4e46cbee6aa
40 lines
1.0 KiB
JavaScript
40 lines
1.0 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @polyfill
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*/
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// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
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if (typeof Object.assign !== 'function') {
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Object.defineProperty(Object, 'assign', {
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value: function assign(target, varArgs) {
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'use strict';
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if (target == null) {
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throw new TypeError('Cannot convert undefined or null to object');
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}
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let to = Object(target);
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for (let index = 1; index < arguments.length; index++) {
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let nextSource = arguments[index];
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if (nextSource != null) {
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for (let nextKey in nextSource) {
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if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
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to[nextKey] = nextSource[nextKey];
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}
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}
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}
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}
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return to;
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},
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writable: true,
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configurable: true,
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});
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}
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