@ganuz/has-metadata v0.1.1

@ganuz/has-metadata

Has Metadata is package from Ganuz library

Install

$ yarn add @ganuz/has-metadata

Or

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

Use

Module

import {
  default as hasMetadata
} from '@ganuz/has-metadata';

Browser

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

let {
  hasMetadata
} = G;

Examples

 hasMetadata('foo', null); // throw TypeError
 hasMetadata('foo', {}); // => false
 class C{ @Metadata(String, 'cool') [Symbol.for('some')]: string; }
 hasMetadata(String, C.prototype, Symbol.for('some')); // => true

 class Some{}
 defineMetadata('foo', 'bar', Some);
 hasMetadata('foo', Some); // => true
 class Other extends Some {}
 hasMetadata('foo', Other); // => true

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.