@ganuz/get-metadata v0.1.1

@ganuz/get-metadata

Get Metadata is package from Ganuz library

Install

$ yarn add @ganuz/get-metadata

Or

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

Use

Module

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

Browser

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

let {
  getMetadata
} = G;

Examples

 getMetadata('foo', NaN, 'some'); // throw TypeError
 getMetadata(Symbol('foo'), {}, Symbol('some')); // => undefined
 getMetadata('foo', class {}); // => undefined

 let some = Object.create(null);
 let other = Object.create(some);

 defineMetadata(Symbol.for('colors'), {red: true}, some);
 defineMetadata(String, 'cool', other, Symbol.for('prop'));

 getMetadata(Symbol.for('colors'), some); // => {red: true}
 getMetadata(String, some, Symbol.for('prop')); // => undefined
 getMetadata(Symbol.for('colors'), other); // => {red: true}
 getMetadata(String, other, Symbol.for('prop')); // => 'cool'

 defineMetadata(String, 'fun', some, Symbol.for('prop'));

 getMetadata(String, some, Symbol.for('prop')); // => 'fun'
 getMetadata(String, other, Symbol.for('prop')); // => 'cool'

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.