core-js - npm Package Compare versions

Comparing version 0.2.2 to 0.2.3

bower.json

 {
   "name": "core.js",
   "main": "client/core.js",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "description": "Standard Library",
@@ -6,0 +6,0 @@ "keywords": [

client/core.min.js

 /**
- * Core.js 0.2.2
+ * Core.js 0.2.3
  * https://github.com/zloirock/core-js
@@ -7,3 +7,3 @@ * License: http://rock.mit-license.org
  */
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client/shim.js

 /**
- * Core.js 0.2.2
+ * Core.js 0.2.3
  * https://github.com/zloirock/core-js
@@ -393,2 +393,5 @@ * License: http://rock.mit-license.org
 }
+function getWellKnownSymbol(name, setter){
+  return (Symbol && Symbol[name]) || (setter ? Symbol : safeSymbol)(SYMBOL + DOT + name);
+}
 // The engine works fine with descriptors? Thank's IE8 for his funny defineProperty.
@@ -398,15 +401,13 @@ var DESC   = !!function(){try{return defineProperty({}, 0, ObjectProto)}catch(e){}}()
   , hidden = createDefiner(1)
-  , symbol = Symbol || uid
-  , set    = Symbol ? simpleSet : hidden;
+  , set    = Symbol ? simpleSet : hidden
+  , safeSymbol = Symbol || uid;
 
 // Iterators
 var ITERATOR = 'iterator'
-  , SYMBOL_ITERATOR = Symbol && ITERATOR in Symbol
-      ? Symbol[ITERATOR] : uid(SYMBOL + DOT + ITERATOR)
-  , SYMBOL_TAG = Symbol && TO_STRING_TAG in Symbol
-      ? Symbol[TO_STRING_TAG] : uid(SYMBOL + DOT + TO_STRING_TAG)
+  , SYMBOL_ITERATOR = getWellKnownSymbol(ITERATOR)
+  , SYMBOL_TAG = getWellKnownSymbol(TO_STRING_TAG)
   , FF_ITERATOR = '@@' + ITERATOR
   , SUPPORT_FF_ITER = FF_ITERATOR in ArrayProto
-  , ITER  = symbol('iter')
-  , SHIM  = symbol('shim')
+  , ITER  = safeSymbol('iter')
+  , SHIM  = safeSymbol('shim')
   , KEY   = 1
@@ -731,3 +732,3 @@ , VALUE = 2
   }
-}('propertyIsEnumerable', Function(), classof, symbol(PROTOTYPE));
+}('propertyIsEnumerable', Function(), classof, safeSymbol(PROTOTYPE));
 
@@ -745,3 +746,3 @@ /******************************************************************************
 // ECMAScript 6 symbols shim
-!function(TAG, SymbolRegistry){
+!function(TAG, SymbolRegistry, setter){
   // 19.4.1.1 Symbol([description])
@@ -752,3 +753,3 @@ if(!isNative(Symbol)){
       var tag = uid(description);
-      defineProperty(ObjectProto, tag, {
+      setter && defineProperty(ObjectProto, tag, {
         configurable: true,
@@ -766,4 +767,5 @@ set: function(value){
   $define(GLOBAL + WRAP, {Symbol: Symbol});
-  $define(STATIC, SYMBOL, {
-    // 19.4.2.2 Symbol.for(key)
+  
+  var symbolStatics = {
+    // 19.4.2.1 Symbol.for(key)
     'for': function(key){
@@ -774,17 +776,34 @@ return has(SymbolRegistry, key += '')
     },
-    // 19.4.2.6 Symbol.iterator
+    // 19.4.2.4 Symbol.iterator
     iterator: SYMBOL_ITERATOR,
-    // 19.4.2.7 Symbol.keyFor(sym)
+    // 19.4.2.5 Symbol.keyFor(sym)
     keyFor: part.call(keyOf, SymbolRegistry),
-    // 19.4.2.10 Symbol.toStringTag
-    toStringTag: SYMBOL_TAG = TO_STRING_TAG in Symbol
-      ? Symbol[TO_STRING_TAG]
-      : Symbol(SYMBOL + DOT + TO_STRING_TAG),
-    pure: symbol,
-    set: set
-  });
+    // 19.4.2.13 Symbol.toStringTag
+    toStringTag: SYMBOL_TAG = getWellKnownSymbol(TO_STRING_TAG, true),
+    pure: safeSymbol,
+    set: set,
+    useSetter: function(){setter = true},
+    useSimple: function(){setter = false}
+  };
+  // 19.4.2.2 Symbol.hasInstance
+  // 19.4.2.3 Symbol.isConcatSpreadable
+  // 19.4.2.6 Symbol.match
+  // 19.4.2.8 Symbol.replace
+  // 19.4.2.9 Symbol.search
+  // 19.4.2.10 Symbol.species
+  // 19.4.2.11 Symbol.split
+  // 19.4.2.12 Symbol.toPrimitive
+  // 19.4.2.14 Symbol.unscopables
+  forEach.call(array('hasInstance,isConcatSpreadable,match,replace,search,' +
+    'species,split,toPrimitive,unscopables'), function(it){
+      symbolStatics[it] = getWellKnownSymbol(it);
+    }
+  );
+  $define(STATIC, SYMBOL, symbolStatics);
+  
   setToStringTag(Symbol, SYMBOL);
+  
   // 26.1.11 Reflect.ownKeys (target)
   $define(GLOBAL, {Reflect: {ownKeys: ownKeys}});
-}(symbol('tag'), {});
+}(safeSymbol('tag'), {}, true);
 
@@ -1290,3 +1309,3 @@ /******************************************************************************
     });
-  }(nextTick || setImmediate, symbol('def'));
+  }(nextTick || setImmediate, safeSymbol('def'));
   setToStringTag(Promise, PROMISE);
@@ -1302,8 +1321,8 @@ $define(GLOBAL + FORCED * !isNative(Promise), {Promise: Promise});
 !function(){
-  var KEYS     = COLLECTION_KEYS = symbol('keys')
-    , VALUES   = symbol('values')
-    , STOREID  = symbol('storeId')
-    , WEAKDATA = symbol('weakData')
-    , WEAKID   = symbol('weakId')
-    , SIZE     = DESC ? symbol('size') : 'size'
+  var KEYS     = COLLECTION_KEYS = safeSymbol('keys')
+    , VALUES   = safeSymbol('values')
+    , STOREID  = safeSymbol('storeId')
+    , WEAKDATA = safeSymbol('weakData')
+    , WEAKID   = safeSymbol('weakId')
+    , SIZE     = DESC ? safeSymbol('size') : 'size'
     , uid      = 0
@@ -1525,5 +1544,5 @@ , wid      = 0;
 !function(REFERENCE){
-  REFERENCE_GET = Symbol(SYMBOL+DOT+REFERENCE+'Get');
-  var REFERENCE_SET = Symbol(SYMBOL+DOT+REFERENCE+SET)
-    , REFERENCE_DELETE = Symbol(SYMBOL+DOT+REFERENCE+'Delete');
+  REFERENCE_GET = getWellKnownSymbol(REFERENCE+'Get', true);
+  var REFERENCE_SET = getWellKnownSymbol(REFERENCE+SET, true)
+    , REFERENCE_DELETE = getWellKnownSymbol(REFERENCE+'Delete', true);
   
@@ -1530,0 +1549,0 @@ $define(STATIC, SYMBOL, {

client/shim.min.js

 /**
- * Core.js 0.2.2
+ * Core.js 0.2.3
  * https://github.com/zloirock/core-js
@@ -7,3 +7,3 @@ * License: http://rock.mit-license.org
  */
-!function(fb,y,g){"use strict";function x(a){return null!=a&&("object"==typeof a||"function"==typeof a)}function i(a){return"function"==typeof a}function R(a,b,e){a&&(h(a=e?a:a[c],ib)||d(a,ib,b))}function jb(a){return a==g?a===g?"Undefined":"Null":Rc.call(a).slice(8,-1)}function db(b){var a,c=jb(b);return c==z&&(a=b[ib])?h(Jc,a)?"~"+a:a:c}function vb(){for(var a=arguments.length,c=D(a),b=0,d=Qb._,e=!1;a>b;)(c[b]=arguments[b++])===d&&(e=!0);return Tc(this,c,a,e,d,!1)}function Tc(a,b,d,c,e,f,g){return F(a),function(){var h,k=f?g:this,l=arguments.length,i=0,j=0;if(!c&&!l)return Q(a,b,k);if(h=b.slice(),c)for(;d>i;i++)h[i]===e&&(h[i]=arguments[j++]);for(;l>j;)h.push(arguments[j++]);return Q(a,h,k)}}function k(a,b,c){if(F(a),~c&&b===g)return a;switch(c){case 1:return function(c){return a.call(b,c)};case 2:return function(c,d){return a.call(b,c,d)};case 3:return function(c,d,e){return a.call(b,c,d,e)}}return function(){return a.apply(b,arguments)}}function Q(b,a,c){var 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 //# sourceMappingURL=shim.min.map

package.json

 {
   "name": "core-js",
   "description": "Standard library",
-  "version": "0.2.2",
+  "version": "0.2.3",
   "repository": {
@@ -6,0 +6,0 @@ "type": "git",

README.md

@@ -78,3 +78,3 @@ # Core.js
 Module `es6`. [Symbols](#ecmascript-6-symbols), [collections](#ecmascript-6-collections), [iterators](#ecmascript-6-iterators) and [promises](#ecmascript-6-promises) in separate modules.
-#### ECMAScript 6 Object
+#### ECMAScript 6: Object
 ```javascript
@@ -109,3 +109,3 @@ Object
 ```
-#### ECMAScript 6 Array
+#### ECMAScript 6: Array
 ```javascript
@@ -144,3 +144,3 @@ Array
 ```
-#### ECMAScript 6 String & RegExp
+#### ECMAScript 6: String & RegExp
 ```javascript
@@ -179,3 +179,3 @@ String
 ```
-#### ECMAScript 6 Number & Math
+#### ECMAScript 6: Number & Math
 ```javascript
@@ -215,6 +215,17 @@ Number
 Symbol(description?) -> symbol
+  .hasInstance -> @@hasInstance
+  .isConcatSpreadable -> @@isConcatSpreadable
+  .iterator -> @@iterator
+  .match -> @@match
+  .replace -> @@replace
+  .search -> @@search
+  .species -> @@species
+  .split -> @@split
+  .toPrimitive -> @@toPrimitive
+  .toStringTag -> @@toStringTag
+  .unscopables -> @@unscopables
   .for(key) -> symbol
   .keyFor(symbol) -> key
-  .iterator -> @@iterator
-  .toStringTag -> @@toStringTag
+  .useSimple() -> void
+  .useSetter() -> void
   .pure(description?) -> symbol || string
@@ -257,3 +268,21 @@ .set(object, key, val) -> object
 ```
+By default, `Symbol` polyfill define setter in `Object.prototype`. You can disable it. [Example](http://goo.gl/gbgULA):
+```javascript
+var s1 = Symbol('s1')
+  , o1 = {};
+o1[s1] = true;
+for(var key in o1)log(key); // nothing
 
+Symbol.simple();
+var s2 = Symbol('s2')
+  , o2 = {};
+o2[s2] = true;
+for(var key in o2)log(key); // => 'Symbol(s2)_t.qamkg9f3q', w/o native Symbol
+
+Symbol.setter();
+var s3 = Symbol('s3')
+  , o3 = {};
+o3[s3] = true;
+for(var key in o3)log(key); // nothing
+```
 ### ECMAScript 6: Collections
@@ -652,3 +681,3 @@ Module `es6_collections`, iterators for them are defined in [es6_iterators](#ecmascript-6-iterators).
 console.log(person.getName());          // => 'Vasya'
-for(var key in person)console.log(key);
+for(var key in person)console.log(key); // => only 'getName'
 ```
@@ -845,3 +874,3 @@ Virtual methods [example](http://goo.gl/GJmEfl):
 ### Dict
-Module `dict`.
+Module `dict`. Based on [TC39 discuss](https://github.com/rwaldron/tc39-notes/blob/master/es6/2012-11/nov-29.md#collection-apis-review) / [strawman](http://wiki.ecmascript.org/doku.php?id=harmony:modules_standard#dictionaries).
 ```javascript
@@ -978,3 +1007,3 @@ [new] Dict(itarable (entries) | object ?) -> dict
 ```
-`Fnction#part` partial apply function without `this` binding. Uses global variable `_` (`core._` for builds without extension of native objects) as placeholder. [Examples](http://goo.gl/p9ZJ8K):
+`Function#part` partial apply function without `this` binding. Uses global variable `_` (`core._` for builds without extension of native objects) as placeholder. [Examples](http://goo.gl/p9ZJ8K):
 ```javascript
@@ -1018,3 +1047,3 @@ var fn1 = log.part(1, 2);
 ### Date formatting
-Module `date`.
+Module `date`. Much more simple and compact (~60 lines with `en` & `ru` locales) than [Intl](https://github.com/andyearnshaw/Intl.js) or [Moment.js](http://momentjs.com/). Use them if you need extended work with `Date`.
 ```javascript
@@ -1173,2 +1202,17 @@ Date
 ## Changelog
+**0.2.3** - *2014.12.15* - [Symbols](#ecmascript-6-symbols):
+  * added option to disable addition setter to `Object.prototype` for Symbol polyfill:
+    * added `Symbol.useSimple`
+    * added `Symbol.useSetter`
+  * added cap for well-known Symbols:
+    * added `Symbol.hasInstance`
+    * added `Symbol.isConcatSpreadable`
+    * added `Symbol.match`
+    * added `Symbol.replace`
+    * added `Symbol.search`
+    * added `Symbol.species`
+    * added `Symbol.split`
+    * added `Symbol.toPrimitive`
+    * added `Symbol.unscopables`
+
 **0.2.2** - *2014.12.13* - ES6:
@@ -1175,0 +1219,0 @@ * added [`RegExp#flags`](#ecmascript-6-string--regexp) ([December 2014 Draft Rev 29](http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#december_6_2014_draft_rev_29))

shim.js

 /**
- * Core.js 0.2.2
+ * Core.js 0.2.3
  * https://github.com/zloirock/core-js
@@ -393,2 +393,5 @@ * License: http://rock.mit-license.org
 }
+function getWellKnownSymbol(name, setter){
+  return (Symbol && Symbol[name]) || (setter ? Symbol : safeSymbol)(SYMBOL + DOT + name);
+}
 // The engine works fine with descriptors? Thank's IE8 for his funny defineProperty.
@@ -398,15 +401,13 @@ var DESC   = !!function(){try{return defineProperty({}, 0, ObjectProto)}catch(e){}}()
   , hidden = createDefiner(1)
-  , symbol = Symbol || uid
-  , set    = Symbol ? simpleSet : hidden;
+  , set    = Symbol ? simpleSet : hidden
+  , safeSymbol = Symbol || uid;
 
 // Iterators
 var ITERATOR = 'iterator'
-  , SYMBOL_ITERATOR = Symbol && ITERATOR in Symbol
-      ? Symbol[ITERATOR] : uid(SYMBOL + DOT + ITERATOR)
-  , SYMBOL_TAG = Symbol && TO_STRING_TAG in Symbol
-      ? Symbol[TO_STRING_TAG] : uid(SYMBOL + DOT + TO_STRING_TAG)
+  , SYMBOL_ITERATOR = getWellKnownSymbol(ITERATOR)
+  , SYMBOL_TAG = getWellKnownSymbol(TO_STRING_TAG)
   , FF_ITERATOR = '@@' + ITERATOR
   , SUPPORT_FF_ITER = FF_ITERATOR in ArrayProto
-  , ITER  = symbol('iter')
-  , SHIM  = symbol('shim')
+  , ITER  = safeSymbol('iter')
+  , SHIM  = safeSymbol('shim')
   , KEY   = 1
@@ -537,3 +538,3 @@ , VALUE = 2
 // ECMAScript 6 symbols shim
-!function(TAG, SymbolRegistry){
+!function(TAG, SymbolRegistry, setter){
   // 19.4.1.1 Symbol([description])
@@ -544,3 +545,3 @@ if(!isNative(Symbol)){
       var tag = uid(description);
-      defineProperty(ObjectProto, tag, {
+      setter && defineProperty(ObjectProto, tag, {
         configurable: true,
@@ -558,4 +559,5 @@ set: function(value){
   $define(GLOBAL + WRAP, {Symbol: Symbol});
-  $define(STATIC, SYMBOL, {
-    // 19.4.2.2 Symbol.for(key)
+  
+  var symbolStatics = {
+    // 19.4.2.1 Symbol.for(key)
     'for': function(key){
@@ -566,17 +568,34 @@ return has(SymbolRegistry, key += '')
     },
-    // 19.4.2.6 Symbol.iterator
+    // 19.4.2.4 Symbol.iterator
     iterator: SYMBOL_ITERATOR,
-    // 19.4.2.7 Symbol.keyFor(sym)
+    // 19.4.2.5 Symbol.keyFor(sym)
     keyFor: part.call(keyOf, SymbolRegistry),
-    // 19.4.2.10 Symbol.toStringTag
-    toStringTag: SYMBOL_TAG = TO_STRING_TAG in Symbol
-      ? Symbol[TO_STRING_TAG]
-      : Symbol(SYMBOL + DOT + TO_STRING_TAG),
-    pure: symbol,
-    set: set
-  });
+    // 19.4.2.13 Symbol.toStringTag
+    toStringTag: SYMBOL_TAG = getWellKnownSymbol(TO_STRING_TAG, true),
+    pure: safeSymbol,
+    set: set,
+    useSetter: function(){setter = true},
+    useSimple: function(){setter = false}
+  };
+  // 19.4.2.2 Symbol.hasInstance
+  // 19.4.2.3 Symbol.isConcatSpreadable
+  // 19.4.2.6 Symbol.match
+  // 19.4.2.8 Symbol.replace
+  // 19.4.2.9 Symbol.search
+  // 19.4.2.10 Symbol.species
+  // 19.4.2.11 Symbol.split
+  // 19.4.2.12 Symbol.toPrimitive
+  // 19.4.2.14 Symbol.unscopables
+  forEach.call(array('hasInstance,isConcatSpreadable,match,replace,search,' +
+    'species,split,toPrimitive,unscopables'), function(it){
+      symbolStatics[it] = getWellKnownSymbol(it);
+    }
+  );
+  $define(STATIC, SYMBOL, symbolStatics);
+  
   setToStringTag(Symbol, SYMBOL);
+  
   // 26.1.11 Reflect.ownKeys (target)
   $define(GLOBAL, {Reflect: {ownKeys: ownKeys}});
-}(symbol('tag'), {});
+}(safeSymbol('tag'), {}, true);
 
@@ -1082,3 +1101,3 @@ /******************************************************************************
     });
-  }(nextTick || setImmediate, symbol('def'));
+  }(nextTick || setImmediate, safeSymbol('def'));
   setToStringTag(Promise, PROMISE);
@@ -1094,8 +1113,8 @@ $define(GLOBAL + FORCED * !isNative(Promise), {Promise: Promise});
 !function(){
-  var KEYS     = COLLECTION_KEYS = symbol('keys')
-    , VALUES   = symbol('values')
-    , STOREID  = symbol('storeId')
-    , WEAKDATA = symbol('weakData')
-    , WEAKID   = symbol('weakId')
-    , SIZE     = DESC ? symbol('size') : 'size'
+  var KEYS     = COLLECTION_KEYS = safeSymbol('keys')
+    , VALUES   = safeSymbol('values')
+    , STOREID  = safeSymbol('storeId')
+    , WEAKDATA = safeSymbol('weakData')
+    , WEAKID   = safeSymbol('weakId')
+    , SIZE     = DESC ? safeSymbol('size') : 'size'
     , uid      = 0
@@ -1317,5 +1336,5 @@ , wid      = 0;
 !function(REFERENCE){
-  REFERENCE_GET = Symbol(SYMBOL+DOT+REFERENCE+'Get');
-  var REFERENCE_SET = Symbol(SYMBOL+DOT+REFERENCE+SET)
-    , REFERENCE_DELETE = Symbol(SYMBOL+DOT+REFERENCE+'Delete');
+  REFERENCE_GET = getWellKnownSymbol(REFERENCE+'Get', true);
+  var REFERENCE_SET = getWellKnownSymbol(REFERENCE+SET, true)
+    , REFERENCE_DELETE = getWellKnownSymbol(REFERENCE+'Delete', true);
   
@@ -1322,0 +1341,0 @@ $define(STATIC, SYMBOL, {

src/$for.js

@@ -60,2 +60,2 @@ !function(ENTRIES, FN){
   $define(GLOBAL + FORCED, {$for: $for});
-}('entries', symbol('fn'));
+}('entries', safeSymbol('fn'));

src/common.js

@@ -380,2 +380,5 @@ var global          = returnThis()
 }
+function getWellKnownSymbol(name, setter){
+  return (Symbol && Symbol[name]) || (setter ? Symbol : safeSymbol)(SYMBOL + DOT + name);
+}
 // The engine works fine with descriptors? Thank's IE8 for his funny defineProperty.
@@ -385,15 +388,13 @@ var DESC   = !!function(){try{return defineProperty({}, 0, ObjectProto)}catch(e){}}()
   , hidden = createDefiner(1)
-  , symbol = Symbol || uid
-  , set    = Symbol ? simpleSet : hidden;
+  , set    = Symbol ? simpleSet : hidden
+  , safeSymbol = Symbol || uid;
 
 // Iterators
 var ITERATOR = 'iterator'
-  , SYMBOL_ITERATOR = Symbol && ITERATOR in Symbol
-      ? Symbol[ITERATOR] : uid(SYMBOL + DOT + ITERATOR)
-  , SYMBOL_TAG = Symbol && TO_STRING_TAG in Symbol
-      ? Symbol[TO_STRING_TAG] : uid(SYMBOL + DOT + TO_STRING_TAG)
+  , SYMBOL_ITERATOR = getWellKnownSymbol(ITERATOR)
+  , SYMBOL_TAG = getWellKnownSymbol(TO_STRING_TAG)
   , FF_ITERATOR = '@@' + ITERATOR
   , SUPPORT_FF_ITER = FF_ITERATOR in ArrayProto
-  , ITER  = symbol('iter')
-  , SHIM  = symbol('shim')
+  , ITER  = safeSymbol('iter')
+  , SHIM  = safeSymbol('shim')
   , KEY   = 1
@@ -400,0 +401,0 @@ , VALUE = 2

src/es5.js

@@ -202,2 +202,2 @@ // ECMAScript 5 shim
   }
-}('propertyIsEnumerable', Function(), classof, symbol(PROTOTYPE));
+}('propertyIsEnumerable', Function(), classof, safeSymbol(PROTOTYPE));

src/es6_collections.js

 // ECMAScript 6 collections shim
 !function(){
-  var KEYS     = COLLECTION_KEYS = symbol('keys')
-    , VALUES   = symbol('values')
-    , STOREID  = symbol('storeId')
-    , WEAKDATA = symbol('weakData')
-    , WEAKID   = symbol('weakId')
-    , SIZE     = DESC ? symbol('size') : 'size'
+  var KEYS     = COLLECTION_KEYS = safeSymbol('keys')
+    , VALUES   = safeSymbol('values')
+    , STOREID  = safeSymbol('storeId')
+    , WEAKDATA = safeSymbol('weakData')
+    , WEAKID   = safeSymbol('weakId')
+    , SIZE     = DESC ? safeSymbol('size') : 'size'
     , uid      = 0
@@ -10,0 +10,0 @@ , wid      = 0;

src/es6_promise.js

@@ -133,5 +133,5 @@ // ES6 promises shim
     });
-  }(nextTick || setImmediate, symbol('def'));
+  }(nextTick || setImmediate, safeSymbol('def'));
   setToStringTag(Promise, PROMISE);
   $define(GLOBAL + FORCED * !isNative(Promise), {Promise: Promise});
 }(global[PROMISE]);

src/es6_symbol.js

 // ECMAScript 6 symbols shim
-!function(TAG, SymbolRegistry){
+!function(TAG, SymbolRegistry, setter){
   // 19.4.1.1 Symbol([description])
@@ -8,3 +8,3 @@ if(!isNative(Symbol)){
       var tag = uid(description);
-      defineProperty(ObjectProto, tag, {
+      setter && defineProperty(ObjectProto, tag, {
         configurable: true,
@@ -22,4 +22,5 @@ set: function(value){
   $define(GLOBAL + WRAP, {Symbol: Symbol});
-  $define(STATIC, SYMBOL, {
-    // 19.4.2.2 Symbol.for(key)
+  
+  var symbolStatics = {
+    // 19.4.2.1 Symbol.for(key)
     'for': function(key){
@@ -30,16 +31,33 @@ return has(SymbolRegistry, key += '')
     },
-    // 19.4.2.6 Symbol.iterator
+    // 19.4.2.4 Symbol.iterator
     iterator: SYMBOL_ITERATOR,
-    // 19.4.2.7 Symbol.keyFor(sym)
+    // 19.4.2.5 Symbol.keyFor(sym)
     keyFor: part.call(keyOf, SymbolRegistry),
-    // 19.4.2.10 Symbol.toStringTag
-    toStringTag: SYMBOL_TAG = TO_STRING_TAG in Symbol
-      ? Symbol[TO_STRING_TAG]
-      : Symbol(SYMBOL + DOT + TO_STRING_TAG),
-    pure: symbol,
-    set: set
-  });
+    // 19.4.2.13 Symbol.toStringTag
+    toStringTag: SYMBOL_TAG = getWellKnownSymbol(TO_STRING_TAG, true),
+    pure: safeSymbol,
+    set: set,
+    useSetter: function(){setter = true},
+    useSimple: function(){setter = false}
+  };
+  // 19.4.2.2 Symbol.hasInstance
+  // 19.4.2.3 Symbol.isConcatSpreadable
+  // 19.4.2.6 Symbol.match
+  // 19.4.2.8 Symbol.replace
+  // 19.4.2.9 Symbol.search
+  // 19.4.2.10 Symbol.species
+  // 19.4.2.11 Symbol.split
+  // 19.4.2.12 Symbol.toPrimitive
+  // 19.4.2.14 Symbol.unscopables
+  forEach.call(array('hasInstance,isConcatSpreadable,match,replace,search,' +
+    'species,split,toPrimitive,unscopables'), function(it){
+      symbolStatics[it] = getWellKnownSymbol(it);
+    }
+  );
+  $define(STATIC, SYMBOL, symbolStatics);
+  
   setToStringTag(Symbol, SYMBOL);
+  
   // 26.1.11 Reflect.ownKeys (target)
   $define(GLOBAL, {Reflect: {ownKeys: ownKeys}});
-}(symbol('tag'), {});
+}(safeSymbol('tag'), {}, true);

src/es7_refs.js

 // https://github.com/zenparsing/es-abstract-refs
 !function(REFERENCE){
-  REFERENCE_GET = Symbol(SYMBOL+DOT+REFERENCE+'Get');
-  var REFERENCE_SET = Symbol(SYMBOL+DOT+REFERENCE+SET)
-    , REFERENCE_DELETE = Symbol(SYMBOL+DOT+REFERENCE+'Delete');
+  REFERENCE_GET = getWellKnownSymbol(REFERENCE+'Get', true);
+  var REFERENCE_SET = getWellKnownSymbol(REFERENCE+SET, true)
+    , REFERENCE_DELETE = getWellKnownSymbol(REFERENCE+'Delete', true);
   
@@ -7,0 +7,0 @@ $define(STATIC, SYMBOL, {

src/iterator.js

@@ -114,2 +114,2 @@ !function(WRAPPER, ENTRIES, FN, I){
   $define(GLOBAL + FORCED, {Iterator: Iterator});
-}('Wrapper', symbol('entries'), symbol('fn'), symbol('i'));
+}('Wrapper', safeSymbol('entries'), safeSymbol('fn'), safeSymbol('i'));

No alert changes

Improved metrics

Total package byte prevSize

978031

increased by0.82%

Lines of code

19092

increased by0.61%

Number of lines in readme file

1250

increased by3.65%

No dependency changes