ES2017 spec-compliant shim for `Object.getOwnPropertyDescriptors` that works in ES5.
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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 interface. It works in an ES3-supported environment and complies with the spec.
``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));
, and run npm test`[package-url]: https://npmjs.org/package/object.getownpropertydescriptors
[npm-version-svg]: http://versionbadg.es/es-shims/Object.getOwnPropertyDescriptors.svg
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[travis-url]: https://travis-ci.org/es-shims/Object.getOwnPropertyDescriptors
[deps-svg]: https://david-dm.org/es-shims/Object.getOwnPropertyDescriptors.svg
[deps-url]: https://david-dm.org/es-shims/Object.getOwnPropertyDescriptors
[dev-deps-svg]: https://david-dm.org/es-shims/Object.getOwnPropertyDescriptors/dev-status.svg
[dev-deps-url]: https://david-dm.org/es-shims/Object.getOwnPropertyDescriptors#info=devDependencies
[npm-badge-png]: https://nodei.co/npm/object.getownpropertydescriptors.png?downloads=true&stars=true
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[license-url]: LICENSE
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[codecov-url]: https://app.codecov.io/gh/es-shims/Object.getOwnPropertyDescriptors/
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