Nocturnal Parakeet Monitor

    object.getownpropertydescriptors
    DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/object.getownpropertydescriptors package

    2.1.4 • Public • Published

    object.getownpropertydescriptors Version Badge

    github actions coverage dependency status dev dependency status License Downloads

    npm badge

    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.

    Example

    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
    });
    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));
    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

    Install

    npm i object.getownpropertydescriptors

    DownloadsWeekly Downloads

    11,864,981

    Version

    2.1.4

    License

    MIT

    Unpacked Size

    20 kB

    Total Files

    16

    Last publish

    Collaborators

    • ljharb