49 lines
1.0 KiB
JavaScript
49 lines
1.0 KiB
JavaScript
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// Workaround for http://code.google.com/p/v8/issues/detail?id=2804
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"use strict";
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var create = Object.create, shim;
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if (!require("./set-prototype-of/is-implemented")()) {
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shim = require("./set-prototype-of/shim");
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}
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module.exports = (function () {
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var nullObject, polyProps, desc;
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if (!shim) return create;
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if (shim.level !== 1) return create;
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nullObject = {};
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polyProps = {};
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desc = {
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configurable: false,
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enumerable: false,
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writable: true,
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value: undefined
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};
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Object.getOwnPropertyNames(Object.prototype).forEach(function (name) {
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if (name === "__proto__") {
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polyProps[name] = {
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configurable: true,
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enumerable: false,
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writable: true,
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value: undefined
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};
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return;
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}
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polyProps[name] = desc;
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});
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Object.defineProperties(nullObject, polyProps);
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Object.defineProperty(shim, "nullPolyfill", {
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configurable: false,
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enumerable: false,
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writable: false,
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value: nullObject
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});
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return function (prototype, props) {
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return create(prototype === null ? nullObject : prototype, props);
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};
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}());
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