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author | Florian Dold <florian.dold@gmail.com> | 2017-08-14 05:01:11 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2017-08-14 05:02:09 +0200 |
commit | 363723fc84f7b8477592e0105aeb331ec9a017af (patch) | |
tree | 29f92724f34131bac64d6a318dd7e30612e631c7 /node_modules/es5-ext/object/create.js | |
parent | 5634e77ad96bfe1818f6b6ee70b7379652e5487f (diff) |
node_modules
Diffstat (limited to 'node_modules/es5-ext/object/create.js')
-rw-r--r-- | node_modules/es5-ext/object/create.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/node_modules/es5-ext/object/create.js b/node_modules/es5-ext/object/create.js new file mode 100644 index 000000000..9e3e6e8d1 --- /dev/null +++ b/node_modules/es5-ext/object/create.js @@ -0,0 +1,48 @@ +// Workaround for http://code.google.com/p/v8/issues/detail?id=2804 + +"use strict"; + +var create = Object.create, shim; + +if (!require("./set-prototype-of/is-implemented")()) { + shim = require("./set-prototype-of/shim"); +} + +module.exports = (function () { + var nullObject, polyProps, desc; + if (!shim) return create; + if (shim.level !== 1) return create; + + nullObject = {}; + polyProps = {}; + desc = { + configurable: false, + enumerable: false, + writable: true, + value: undefined + }; + Object.getOwnPropertyNames(Object.prototype).forEach(function (name) { + if (name === "__proto__") { + polyProps[name] = { + configurable: true, + enumerable: false, + writable: true, + value: undefined + }; + return; + } + polyProps[name] = desc; + }); + Object.defineProperties(nullObject, polyProps); + + Object.defineProperty(shim, "nullPolyfill", { + configurable: false, + enumerable: false, + writable: false, + value: nullObject + }); + + return function (prototype, props) { + return create(prototype === null ? nullObject : prototype, props); + }; +}()); |