es6-symbol - npm Package Compare versions

Comparing version 1.0.0 to 2.0.0

is-implemented.js

@@ -12,3 +12,2 @@ 'use strict';
 	if (typeof Symbol.isConcatSpreadable !== 'object') return false;
-	if (typeof Symbol.isRegExp !== 'object') return false;
 	if (typeof Symbol.iterator !== 'object') return false;
@@ -15,0 +14,0 @@ if (typeof Symbol.toPrimitive !== 'object') return false;

package.json

 {
   "name": "es6-symbol",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "description": "ECMAScript6 Symbol polyfill",
@@ -5,0 +5,0 @@ "author": "Mariusz Nowak <[e-mail]> (http://www.medikoo.com/)",

polyfill.js

 'use strict';
 
-var d = require('d')
+var d              = require('d')
+  , validateSymbol = require('./validate-symbol')
 
   , create = Object.create, defineProperties = Object.defineProperties
   , defineProperty = Object.defineProperty, objPrototype = Object.prototype
-  , Symbol, HiddenSymbol;
+  , Symbol, HiddenSymbol, globalSymbols = create(null);
 
@@ -39,7 +40,19 @@ var generateName = (function () {
 defineProperties(Symbol, {
-	create: d('', Symbol('create')),
+	for: d(function (key) {
+		if (globalSymbols[key]) return globalSymbols[key];
+		return (globalSymbols[key] = Symbol(String(key)));
+	}),
+	keyFor: d(function (s) {
+		var key;
+		validateSymbol(s);
+		for (key in globalSymbols) if (globalSymbols[key] === s) return key;
+	}),
 	hasInstance: d('', Symbol('hasInstance')),
 	isConcatSpreadable: d('', Symbol('isConcatSpreadable')),
-	isRegExp: d('', Symbol('isRegExp')),
 	iterator: d('', Symbol('iterator')),
+	match: d('', Symbol('match')),
+	replace: d('', Symbol('replace')),
+	search: d('', Symbol('search')),
+	species: d('', Symbol('species')),
+	split: d('', Symbol('split')),
 	toPrimitive: d('', Symbol('toPrimitive')),
@@ -46,0 +59,0 @@ toStringTag: d('', Symbol('toStringTag')),

README.md

 # es6-symbol
-## ECMAScript6 Symbol polyfill
+## ECMAScript 6 Symbol polyfill
 
+For more information about symbols see following links
+- [Symbols in ECMAScript 6 by Axel Rauschmayer](http://www.2ality.com/2014/12/es6-symbols.html)
+- [MDN Documentation](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol)
+- [Specification](http://people.mozilla.org/~jorendorff/es6-draft.html#sec-symbol-constructor)
+
 ### Limitations
 
-- Underneath it uses real string property names which can easily be retrieved (however accidental collision with other property names is unlikely)
-- As it needs custom `toString` behavior to work properly. Original `Symbol.prototype.toString` couldn't be implemented as specified, still it's accessible as `Symbol.prototoype.properToString`
+Underneath it uses real string property names which can easily be retrieved, however accidental collision with other property names is unlikely.
 
 ### Usage
 
-If you want to make sure your environment implements `Symbol`, do:
+If you'd like to use native version when it exists and fallback to polyfill if it doesn't (but without implementing `Symbol` on global scope), do:
 
 ```javascript
-require('es6-symbol/implement');
+var Symbol = require('es6-symbol');
 ```
 
-If you'd like to use native version when it exists and fallback to polyfill if it doesn't, but without implementing `Symbol` on global scope, do:
+If you want to make sure your environment implements `Symbol`, do:
 
 ```javascript
-var Symbol = require('es6-symbol');
+require('es6-symbol/implement');
 ```
@@ -63,3 +67,3 @@
 
-You can easily bundle _es6-symbol_ for browser with [modules-webmake](https://github.com/medikoo/modules-webmake)
+To port it to Browser or any other (non CJS) environment, use your favorite CJS bundler. No favorite yet? Try: [Browserify](http://browserify.org/), [Webmake](https://github.com/medikoo/modules-webmake) or [Webpack](http://webpack.github.io/)
 
@@ -66,0 +70,0 @@ ## Tests [![Build Status](https://travis-ci.org/medikoo/es6-symbol.png)](https://travis-ci.org/medikoo/es6-symbol)

test/polyfill.js

@@ -23,2 +23,6 @@ 'use strict';
 		value: 'foo', writable: true });
+	symbol = T.for('marko');
+	a(isSymbol(symbol), true);
+	a(T.for('marko'), symbol);
+	a(T.keyFor(symbol), 'marko');
 };

No alert changes

Improved metrics

Total package byte prevSize

11917

increased by6.55%

Lines of code

186

increased by2.2%

Number of lines in readme file

72

increased by5.88%

Worsened metrics

Number of package files

21

decreased by-4.55%

No dependency changes