Current File : /lib/node_modules/npm/node_modules/object.getownpropertydescriptors//README.md
#object.getownpropertydescriptors <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
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An ES2017 spec-compliant shim for `Object.getOwnPropertyDescriptors` that works in ES5.
Invoke its "shim" method to shim `Object.getOwnPropertyDescriptors` if it is unavailable, and if `Object.getOwnPropertyDescriptor` is available.
This package implements the [es-shim API](https://github.com/es-shims/api) interface. It works in an ES3-supported environment and complies with the [spec](https://github.com/tc39/ecma262/pull/582).
## Example
```js
var getDescriptors = require('object.getownpropertydescriptors');
var assert = require('assert');
var obj = { normal: Infinity };
var enumDescriptor = {
enumerable: false,
writable: false,
configurable: true,
value: true
};
var writableDescriptor = {
enumerable: true,
writable: true,
configurable: true,
value: 42
};
var symbol = Symbol();
var symDescriptor = {
enumerable: true,
writable: true,
configurable: false,
value: [symbol]
};
Object.defineProperty(obj, 'enumerable', enumDescriptor);
Object.defineProperty(obj, 'writable', writableDescriptor);
Object.defineProperty(obj, 'symbol', symDescriptor);
var descriptors = getDescriptors(obj);
assert.deepEqual(descriptors, {
normal: {
enumerable: true,
writable: true,
configurable: true,
value: Infinity
},
enumerable: enumDescriptor,
writable: writableDescriptor,
symbol: symDescriptor
});
```
```js
var getDescriptors = require('object.getownpropertydescriptors');
var assert = require('assert');
/* when Object.getOwnPropertyDescriptors is not present */
delete Object.getOwnPropertyDescriptors;
var shimmedDescriptors = getDescriptors.shim();
assert.equal(shimmedDescriptors, getDescriptors);
assert.deepEqual(shimmedDescriptors(obj), getDescriptors(obj));
```
```js
var getDescriptors = require('object.getownpropertydescriptors');
var assert = require('assert');
/* when Object.getOwnPropertyDescriptors is present */
var shimmedDescriptors = getDescriptors.shim();
assert.notEqual(shimmedDescriptors, getDescriptors);
assert.deepEqual(shimmedDescriptors(obj), getDescriptors(obj));
```
## Tests
Simply clone the repo, `npm install`, and run `npm test`
[package-url]: https://npmjs.org/package/object.getownpropertydescriptors
[npm-version-svg]: http://versionbadg.es/ljharb/object.getownpropertydescriptors.svg
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[travis-url]: https://travis-ci.org/ljharb/object.getownpropertydescriptors
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[testling-url]: https://ci.testling.com/ljharb/object.getownpropertydescriptors
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[license-url]: LICENSE
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[downloads-url]: http://npm-stat.com/charts.html?package=object.getownpropertydescriptors
