@ganuz/get-own-metadata v0.1.1

@ganuz/get-own-metadata

Get Own Metadata is package from Ganuz library

Install

$ yarn add @ganuz/get-own-metadata

Or

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

Use

Module

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

Browser

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

let {
  getOwnMetadata
} = G;

Examples

 getOwnMetadata('key', null, 'prop'); // throw TypeError
 getOwnMetadata('key', {}); // => undefined
 class Some{ @Metadata('foo', 'bar') static prop: string; }
 getOwnMetadata('foo', Some, 'prop'); // => 'bar'

 @Metadata('foo', 'bar')
 class A {
     @Metadata('name', 'bob') prop: string;
 }

 @Metadata('num', -97)
 class B extends A {
     @Metadata('name', 'alice') prop: string;
 }

 getOwnMetadata('foo', A); // => 'bar'
 getOwnMetadata('num', A); // => undefined
 getOwnMetadata('name', A.prototype, 'prop'); // => 'bob'

 getOwnMetadata('foo', B); // => undefined
 getOwnMetadata('num', B); // => -97
 getOwnMetadata('name', B.prototype, 'prop'); // => 'alice'

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.