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Rich Trott
d7aa8fa088
Update ESLint to 2.1.0. ESLint has a number of potentially-useful new features but this change attempts to be minimal in its changes. However, some things could not be avoided reasonably. ESLint 2.1.0 found a few lint issues that ESLing 1.x missed with template strings that did not take advantage of any features of template strings, and `let` declarations where `const` sufficed. Additionally, ESLint 2.1.0 removes some granularity around enabling ES6 features. Some features (e.g., spread operator) that had been turned off in our configuration for ESLint 1.x are now permitted. PR-URL: https://github.com/nodejs/node/pull/5214 Reviewed-By: Michaël Zasso <mic.besace@gmail.com> Reviewed-By: jbergstroem - Johan Bergström <bugs@bergstroem.nu> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Roman Reiss <me@silverwind.io> Reviewed-By: Myles Borins <myles.borins@gmail.com>
es6-weak-map
WeakMap collection as specified in ECMAScript6
Roughly inspired by Mark Miller's and Kris Kowal's WeakMap implementation.
Differences are:
- Assumes compliant ES5 environment (no weird ES3 workarounds or hacks)
- Well modularized CJS style
- Based on one solution.
Limitations
- Will fail on non extensible objects provided as keys
Installation
$ 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
Usage
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');
API
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.has(obj); // false
Tests 
$ npm test