46 lines
1.3 KiB
JavaScript
46 lines
1.3 KiB
JavaScript
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/*
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* Object.assign(), described in E6 Section 19.1.2.1
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*
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* http://www.ecma-international.org/ecma-262/6.0/index.html#sec-object.assign
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*/
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if (typeof Object.assign === 'undefined') {
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Object.defineProperty(Object, 'assign', {
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value: function (target) {
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var i, n, j, m, k;
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var source, keys;
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var gotError;
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var pendingError;
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if (target == null) {
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throw new Exception('target null or undefined');
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}
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for (i = 1, n = arguments.length; i < n; i++) {
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source = arguments[i];
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if (source == null) {
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continue; // null or undefined
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}
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source = Object(source);
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keys = Object.keys(source); // enumerable own keys
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for (j = 0, m = keys.length; j < m; j++) {
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k = keys[j];
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try {
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target[k] = source[k];
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} catch (e) {
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if (!gotError) {
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gotError = true;
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pendingError = e;
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}
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}
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}
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}
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if (gotError) {
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throw pendingError;
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}
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}, writable: true, enumerable: false, configurable: true
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});
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}
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