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test | 3 سال پیش | |
CHANGES | 3 سال پیش | |
LICENCE | 3 سال پیش | |
README.md | 3 سال پیش | |
implement.js | 3 سال پیش | |
index.js | 3 سال پیش | |
is-implemented.js | 3 سال پیش | |
is-native-implemented.js | 3 سال پیش | |
is-weak-map.js | 3 سال پیش | |
package.json | 3 سال پیش | |
polyfill.js | 3 سال پیش | |
valid-weak-map.js | 3 سال پیش |
Roughly inspired by Mark Miller's and Kris Kowal's WeakMap implementation.
Differences are:
clear
method is provided, it's not perfectly spec compliant. If some objects were saved as values, they need to be removed via delete
. Otherwise they'll remain infinitely attached to key object (that means, they'll be free for GC only if key object was collected as well).$ npm install es6-weak-map
To port it to Browser or any other (non CJS) environment, use your favorite CJS bundler. No favorite yet? Try: Browserify, Webmake or Webpack
If you want to make sure your environment implements WeakMap
, do:
require('es6-weak-map/implement');
If you'd like to use native version when it exists and fallback to polyfill if it doesn't, but without implementing WeakMap
on global scope, do:
var WeakMap = require('es6-weak-map');
If you strictly want to use polyfill even if native WeakMap
exists, do:
var WeakMap = require('es6-weak-map/polyfill');
Best is to refer to specification. Still if you want quick look, follow example:
var WeakMap = require('es6-weak-map');
var map = new WeakMap();
var obj = {};
map.set(obj, 'foo'); // map
map.get(obj); // 'foo'
map.has(obj); // true
map.delete(obj); // true
map.get(obj); // undefined
map.has(obj); // false
map.set(obj, 'bar'); // map
map.clear(); // undefined
map.has(obj); // false
$ npm test