82f2b76e25
We now use webpack instead of SystemJS, effectively bundling modules into one file (plus commons chunks) for every entry point. This results in a much smaller extension size (almost half). Furthermore we use yarn/npm even for extension run-time dependencies. This relieves us from manually vendoring and building dependencies. It's also easier to understand for new developers familiar with node.
91 lines
2.1 KiB
JavaScript
91 lines
2.1 KiB
JavaScript
/*
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object-assign
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(c) Sindre Sorhus
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@license MIT
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*/
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'use strict';
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/* eslint-disable no-unused-vars */
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var getOwnPropertySymbols = Object.getOwnPropertySymbols;
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var hasOwnProperty = Object.prototype.hasOwnProperty;
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var propIsEnumerable = Object.prototype.propertyIsEnumerable;
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function toObject(val) {
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if (val === null || val === undefined) {
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throw new TypeError('Object.assign cannot be called with null or undefined');
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}
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return Object(val);
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}
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function shouldUseNative() {
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try {
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if (!Object.assign) {
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return false;
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}
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// Detect buggy property enumeration order in older V8 versions.
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// https://bugs.chromium.org/p/v8/issues/detail?id=4118
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var test1 = new String('abc'); // eslint-disable-line no-new-wrappers
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test1[5] = 'de';
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if (Object.getOwnPropertyNames(test1)[0] === '5') {
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return false;
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}
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// https://bugs.chromium.org/p/v8/issues/detail?id=3056
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var test2 = {};
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for (var i = 0; i < 10; i++) {
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test2['_' + String.fromCharCode(i)] = i;
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}
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var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
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return test2[n];
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});
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if (order2.join('') !== '0123456789') {
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return false;
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}
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// https://bugs.chromium.org/p/v8/issues/detail?id=3056
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var test3 = {};
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'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
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test3[letter] = letter;
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});
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if (Object.keys(Object.assign({}, test3)).join('') !==
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'abcdefghijklmnopqrst') {
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return false;
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}
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return true;
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} catch (err) {
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// We don't expect any of the above to throw, but better to be safe.
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return false;
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}
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}
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module.exports = shouldUseNative() ? Object.assign : function (target, source) {
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var from;
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var to = toObject(target);
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var symbols;
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for (var s = 1; s < arguments.length; s++) {
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from = Object(arguments[s]);
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for (var key in from) {
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if (hasOwnProperty.call(from, key)) {
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to[key] = from[key];
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}
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}
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if (getOwnPropertySymbols) {
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symbols = getOwnPropertySymbols(from);
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for (var i = 0; i < symbols.length; i++) {
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if (propIsEnumerable.call(from, symbols[i])) {
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to[symbols[i]] = from[symbols[i]];
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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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