@ganuz/get-own-metadata-keys v0.1.1

@ganuz/get-own-metadata-keys

Get Own Metadata Keys is package from Ganuz library

Install

$ yarn add @ganuz/get-own-metadata-keys

Or

$ npm install --save @ganuz/get-own-metadata-keys

Use

Module

import {
  default as getOwnMetadataKeys
} from '@ganuz/get-own-metadata-keys';

Browser

<script src="https://unpkg.com/@ganuz/get-own-metadata-keys/bundle.umd.min.js"></script>

let {
  getOwnMetadataKeys
} = G;

Examples

 getOwnMetadataKeys(null); // throw TypeError
 getOwnMetadataKeys({}); // => []
 class C{ @Metadata(Number, 0) prop: string; }
 getOwnMetadataKeys(C.prototype, 'prop'); // => [Number]

 class Some {}

 class Other extends Some{}

 defineMetadata(Number, 777, Some);
 defineMetadata('foo', 'bar', Some);
 defineMetadata('color', 'blue', Some, 'prop');
 defineMetadata(Object, null, Some, 'prop');
 defineMetadata(String, 'word', Other);
 defineMetadata(Function, Object, Other);
 defineMetadata('color', 'red', Other, 'prop');

 getOwnMetadataKeys(Some); => [Number, 'foo']
 getOwnMetadataKeys(Some, 'prop'); => ['color', Object]
 getOwnMetadataKeys(Other); => [String, Function]
 getOwnMetadataKeys(Other, 'prop'); => ['color']

Note: It is based on es6 WeakMap and Map no need for polyfill (built-in library support).

License

Copyright © Yisrael Eliev, Licensed under the MIT license.