core-js - npm Package Compare versions

Comparing version 0.0.7 to 0.0.8

core.min.js

 /**
- * Core.js v0.0.7
- * http://core.zloirock.ru
+ * Core.js 0.0.7
+ * https://github.com/zloirock/core-js
+ * License: http://rock.mit-license.org
  * © 2014 Denis Pushkarev
- * Available under MIT license
  */
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 //# sourceMappingURL=core.min.map

package.json

 {
   "name": "core-js",
   "description": "Standard library",
-  "version": "0.0.7",
+  "version": "0.0.8",
   "repository": {
@@ -22,4 +22,8 @@ "type": "git",
     "karma-firefox-launcher": "*",
-    "karma-opera-launcher": "*"
+    "karma-opera-launcher": "*",
+    "promises-aplus-tests": "*"
+  },
+  "scripts": {
+    "promises-tests": "promises-aplus-tests tests/promises_tests_adapter"
   }
 }

README.md

 # Core.js
-Alternative standard library for javascript. Includes polyfills for ECMAScript 5, ECMAScript 6, setImmediate, promises, static array methods, extended object api, console cap and other sugar.
+Alternative standard library for javascript. Includes polyfills for ECMAScript 5, ECMAScript 6: Set, Map, WeakSet, WeakMap, Promise, Symbol, iterators; setImmediate, static array methods, console cap. Additional functionality: Dict, extended partial application, extended object api, Date formatting and other sugar.
 ### Install
@@ -15,2 +15,197 @@ ```
 require('core-js');
+```
+### API:
+```livescript
+global -> object                                                      node
+Object
+  .create(proto | null, descs?) -> object                             es5
+  .getPrototypeOf(object) -> proto | null                             es5 sham
+  .setPrototypeOf(object, proto | null) -> &0                         es6 sham
+  .defineProperty(object, key, desc) -> &0                            es5 sham
+  .defineProperties(object, descs) -> &0                              es5 sham
+  .getOwnPropertyNames(object) -> array                               es5 sham
+  .getOwnPropertyDescriptor(object, key) -> desc                      es5
+  .keys(object) -> array                                              es5
+  .values(object) -> array                                            es7
+  .entries(object) -> array                                           es7
+  .assign(target, ...src) -> &0                                       es6
+  .is(a, b) -> bool                                                   es6
+  .isPrototype(proto, object) -> bool                                 core
+  .getOwnPropertyKeys(object) -> array                                core
+  .getPropertyDescriptor(object, key) -> desc                         core
+  .getOwnPropertyDescriptors(object) -> descs                         core
+  .make(proto | null, props?) -> object                               core
+  .define(object, props) -> &0                                        core
+  .isObject(var) -> bool                                              core
+  .classof(var) -> string                                             core
+  .tie(object, key, ...args | _) -> fn(...args)                       core
+  ::[_](key, ...args | _) -> fn(...args)                              core
+Function
+  ::bind(object, ...args | _) -> fn(...args)                          es5
+  ::part(...args | _) -> fn(...args)                                  core
+  ::by(object | _, ...args | _) -> fn(...args)                        core
+  ::only(numberArguments, that /* = @ */) -> fn(...args)              core
+  ::methodize() -> fn(that, ...args)                                  core
+  ::invoke(args, that) -> var                                         core
+  ::construct(args) -> object                                         core
+  ::timeout(time, ...args) -> deferred                                core
+  ::interval(time, ...args) -> deferred                               core
+  ::immediate(...args) -> deferred                                    core
+Array
+  .isArray(var) -> bool                                               es5
+  .from(iterable | array-like, fn(val, key, @)?, that) -> array       es6
+  .of(...args) -> array                                               es6
+  .{...Array::}                                                       js1.6
+  ::slice(start?, end?) -> array                                      es5
+  ::join(string = ',') -> string                                      es5
+  ::indexOf(var, from?) -> int                                        es5
+  ::lastIndexOf(var, from?) -> int                                    es5
+  ::every(fn(val, key, @), that) -> bool                              es5
+  ::some(fn(val, key, @), that) -> bool                               es5
+  ::forEach(fn(val, key, @), that) -> void                            es5
+  ::map(fn(val, key, @), that) -> array                               es5
+  ::filter(fn(val, key, @), that) -> array                            es5
+  ::reduce(fn(memo, val, key, @), memo?) -> var                       es5
+  ::reduceRight(fn(memo, val, key, @), memo?) -> var                  es5
+  ::fill(var, start?, end?) -> @                                      es5
+  ::find(fn(val, key, @), that) -> var                                es6
+  ::findIndex(fn(val, key, @), that) -> int                           es6
+  ::values() -> iterator                                              es6
+  ::keys() -> iterator                                                es6
+  ::entries() -> iterator (entries)                                   es6
+  ::@@iterator() -> iterator                                          es6
+  ::get(index) -> var                                                 core
+  ::set(index, value) -> @                                            core
+  ::delete(index) -> bool                                             core
+  ::contains(var, from?) -> bool                                      es7
+  ::clone() -> var                                                    core
+  ::turn(fn(memo, val, key, @), memo = []) -> memo                    core
+[new] Dict(itarable (entries) | object ?) -> dict                     core
+  .isDict(var) -> bool                                                core
+  .has(object, key) -> bool                                           core
+  .get(object, key) -> val                                            core
+  .set(object, key, value) -> &0                                      core
+  .forEach(object, fn(val, key, @), that) -> void                     core
+  .map(object, fn(val, key, @), that) -> new @                        core
+  .filter(object, fn(val, key, @), that) -> new @                     core
+  .some(object, fn(val, key, @), that) -> bool                        core
+  .every(object, fn(val, key, @), that) -> bool                       core
+  .find(object, fn(val, key, @), that) -> val                         core
+  .findKey(object, fn(val, key, @), that) -> key                      core
+  .keyOf(object, var) -> key                                          core
+  .contains(object, var) -> bool                                      core
+  .reduce(object, fn(memo, val, key, @), memo?) -> var                core
+  .turn(object, fn(memo, val, key, @), memo = new @) -> memo          core
+  .clone(foo) -> var                                                  core
+new Set(iterable?) -> set                                             es6
+  ::add(key) -> @                                                     es6
+  ::clear() -> void                                                   es6
+  ::delete(key) -> bool                                               es6
+  ::forEach(fn(el, el, @), that) -> void                              es6
+  ::has(key) -> bool                                                  es6
+  ::size -> uint                                                      es6
+  ::values() -> iterator                                              es6
+  ::keys() -> iterator                                                es6
+  ::entries() -> iterator (entries)                                   es6
+  ::@@iterator() -> iterator                                          es6
+new Map(iterable (entries) ?) -> map                                  es6
+  ::clear() -> void                                                   es6
+  ::delete(key) -> bool                                               es6
+  ::forEach(fn(val, key, @), that) -> void                            es6
+  ::get(key) -> val                                                   es6
+  ::has(key) -> bool                                                  es6
+  ::set(key, val) -> @                                                es6
+  ::size -> uint                                                      es6
+  ::values() -> iterator                                              es6
+  ::keys() -> iterator                                                es6
+  ::entries() -> iterator (entries)                                   es6
+  ::@@iterator() -> iterator (entries)                                es6
+new WeakSet(iterable?) -> weakset                                     es6
+  ::add(key) -> @                                                     es6
+  ::clear() -> void                                                   es6
+  ::delete(key) -> bool                                               es6
+  ::has(key) -> bool                                                  es6
+new WeakMap(iterable (entries) ?) -> weakmap                          es6 sham
+  ::clear() -> void                                                   es6 sham
+  ::delete(key) -> bool                                               es6
+  ::get(key) -> val                                                   es6
+  ::has(key) -> bool                                                  es6
+  ::set(key, val) -> @                                                es6
+String
+  ::trim() -> str                                                     es5
+  ::contains(str, from?) -> bool                                      es6
+  ::startsWith(str, from?) -> bool                                    es6
+  ::endsWith(str, from?) -> bool                                      es6
+  ::repeat(num) -> str                                                es6
+  ::@@iterator() -> iterator                                          es6 sham
+  ::escapeHTML() -> str                                               core
+  ::unescapeHTML() -> str                                             core
+RegExp
+  .escape(str) -> str                                                 es7
+Number
+  .EPSILON -> num                                                     es6
+  .isFinite(num) -> bool                                              es6
+  .isInteger(num) -> bool                                             es6
+  .isNaN(num) -> bool                                                 es6
+  .isSafeInteger(num) -> bool                                         es6
+  .MAX_SAFE_INTEGER -> int                                            es6
+  .MIN_SAFE_INTEGER -> int                                            es6
+  .parseFloat(str) -> num                                             es6
+  .parseInt(str) -> int                                               es6
+  .toInteger(num) -> int                                              core
+  ::times(fn(i, i, @), that) -> array                                 core
+  ::random(lim = 0) -> num                                            core
+  ::{...Math}                                                         core
+Math
+  .acosh(num) -> num                                                  es6
+  .asinh(num) -> num                                                  es6
+  .atanh(num) -> num                                                  es6
+  .cbrt(num) -> num                                                   es6
+  .clz32(num) -> uint                                                 es6
+  .cosh(num) -> num                                                   es6
+  .expm1(num) -> num                                                  es6
+  .hypot(...args) -> num                                              es6
+  .imul(num, num) -> int                                              es6
+  .log1p(num) -> num                                                  es6
+  .log10(num) -> num                                                  es6
+  .log2(num) -> num                                                   es6
+  .sign(num) -> 1 | -1 | 0 | -0 | NaN                                 es6
+  .sinh(num) -> num                                                   es6
+  .tanh(num) -> num                                                   es6
+  .trunc(num) -> num                                                  es6
+  .randomInt(lim1, lim2 = 0) -> int                                   core
+Date
+  .now() -> int                                                       es5
+  .addLocale(key, object) -> @                                        core
+  .locale(key?) -> key                                                core
+  ::format(str, key?) -> str                                          core
+  ::formatUTC(str, key?) -> str                                       core
+Symbol(description?) -> symbol                                        es6 sham
+  .for(key) -> symbol                                                 es6
+  .keyFor(symbol) -> key                                              es6
+  .iterator -> symbol                                                 es6 sham
+  .toStringTag -> symbol                                              es6
+  .pure() -> symbol || string                                         core
+  .set(object, key, val) -> &0                                        core
+new Promise(resolver(resolve(var), reject(var))) -> promise           es6
+  ::then(resolved(var), rejected(var)) -> promise                     es6
+  ::catch(rejected(var)) -> promise                                   es6
+  .resolve(var || promise) -> promise                                 es6
+  .reject(var) -> promise                                             es6
+  .all(iterable) -> promise                                           es6
+  .race(iterable) -> promise                                          es6
+setTimeout(fn(...args), time, ...args) -> id                          w3c / whatwg
+setInterval(fn(...args), time, ...args) -> id                         w3c / whatwg
+setImmediate(fn(...args), ...args) -> id                              w3c / whatwg
+clearImmediate(id) -> void                                            w3c / whatwg
+console(...args) -> void                                              core
+  .{...console API}                                                   console api
+  .enable() -> void                                                   core
+  .disable() -> void                                                  core
+$for(iterable, entries).of(fn(value, key?), that) -> void             core
+  .isIterable(var) -> bool                                            core
+  .getIterator(iterable) -> iterator                                  core
+core                                                                  core
+  .{...global}                                                        core
+_ -> object                                                           core / undescore
 ```

src/array_statics.js

 /**
  * Array static methods
- * http://wiki.ecmascript.org/doku.php?id=strawman:array_statics
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array#Array_generic_methods
- * JavaScript 1.6
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/1.6#Array_and_String_generics
- * Alternatives:
- * https://github.com/plusdude/array-generics
- * http://mootools.net/docs/core/Core/Core#Type:generics
+ * Strawman: http://wiki.ecmascript.org/doku.php?id=strawman:array_statics
+ * JavaScript 1.6: https://developer.mozilla.org/en-US/docs/Web/JavaScript/New_in_JavaScript/1.6#Array_and_String_generics
  */
-$define(STATIC, ARRAY, transform.call(
-  // IE... getOwnPropertyNames($Array),
+$define(STATIC, ARRAY, turn.call(
+  // IE... getNames(ArrayProto),
   array(
@@ -20,8 +15,8 @@ // ES3:
     'fill,find,findIndex,keys,values,entries,' +
-    // Core.js:
-    'at,transform,contains'
+    // Core:
+    'get,set,delete,contains,clone,turn'
   ),
   function(memo, key){
-    if(key in $Array)memo[key] = unbind($Array[key]);
+    if(key in ArrayProto)memo[key] = ctx(call, ArrayProto[key]);
   }, {}
 ));

src/array.js

@@ -7,19 +7,41 @@ $define(PROTO, ARRAY, {
    */
-  at: function(index){
-    index = toInteger(index);
-    return ES5Object(this)[0 > index ? this.length + index : index];
+  get: function(index){
+    var O      = ES5Object(this)
+      , length = toLength(this.length)
+      , index  = toInteger(index);
+    if(index < 0)index += length;
+    return O[index];
   },
+  set: function(index, value){
+    var length = toLength(this.length)
+      , index  = toInteger(index);
+    if(index < 0)index += length;
+    this[index] = value;
+    return this;
+  },
+  'delete': function(index){
+    var length = toLength(this.length)
+      , index  = toInteger(index);
+    if(index < 0)index += length;
+    if(index >= length || index < 0)return false;
+    splice.call(this, index, 1);
+    return true;
+  },
+  // ~ ES7 : https://github.com/domenic/Array.prototype.contains
+  contains: function(searchElement, fromIndex){
+    var O      = ES5Object(this)
+      , length = toLength(O.length)
+      , index  = toInteger(fromIndex);
+    if(index < 0)index = max(index + length, 0);
+    while(length > index)if(sameValueZero(searchElement, O[index++]))return true;
+    return false;
+  },
+  clone: function(){
+    return clone(this, [], []);
+  },
   /**
    * Alternatives:
-   * http://lodash.com/docs#template
+   * http://lodash.com/docs#transform
    */
-  transform: transform,
-  // ~ ES7 : http://esdiscuss.org/topic/april-8-2014-meeting-notes#content-1
-  contains: function(value){
-    var O      = ES5Object(this)
-      , length = O.length
-      , i      = 0;
-    while(length > i)if(same0(value, O[i++]))return true;
-    return false;
-  }
+  turn: turn
 });

src/binding.js

@@ -1,21 +0,3 @@
-!function(){
-  /**
-   * Alternatives:
-   * http://www.2ality.com/2013/06/auto-binding.html
-   * http://livescript.net/#property-access -> foo~bar
-   * http://lodash.com/docs#bindKey
-   */
-  function tie(key){
-    var that        = this
-      , _           = path._
-      , placeholder = false
-      , length      = arguments.length
-      , i = 1, args;
-    if(length < 2)return ctx(that[key], that);
-    args = Array(length - 1)
-    while(length > i)if((args[i - 1] = arguments[i++]) === _)placeholder = true;
-    return createPartialApplication(that[key], args, length, placeholder, true, that);
-  }
-  var $tie = {tie: tie};
-  $define(PROTO, FUNCTION, assign({
+!function(_){
+  $define(PROTO, FUNCTION, {
     /**
@@ -27,17 +9,35 @@ * Partial apply.
      * http://mootools.net/docs/core/Types/Function#Function:pass
-     * http://fitzgen.github.io/wu.js/#wu-partial
      */
     part: part,
     by: function(that){
-      var fn          = this
-        , _           = path._
-        , placeholder = false
-        , length      = arguments.length
-        , i = 1, args;
-      if(length < 2)return ctx(fn, that);
-      args = Array(length - 1);
-      while(length > i)if((args[i - 1] = arguments[i++]) === _)placeholder = true;
-      return createPartialApplication(fn, args, length, placeholder, true, that);
+      var fn     = this
+        , _      = path._
+        , holder = false
+        , length = arguments.length
+        , woctx  = that === _
+        , i      = woctx ? 0 : 1
+        , indent = i
+        , args;
+      if(length < 2)return woctx ? ctx(call, fn, -1) : ctx(fn, that, -1);
+      args = Array(length - indent);
+      while(length > i)if((args[i - indent] = arguments[i++]) === _)holder = true;
+      return partial(woctx ? call : fn, args, length, holder, _, true, woctx ? fn : that);
     },
     /**
+     * http://www.wirfs-brock.com/allen/posts/166
+     * http://habrahabr.ru/post/114737/
+     */
+    only: function(numberArguments, that /* = @ */){
+      var fn     = assertFunction(this)
+        , n      = toLength(numberArguments)
+        , isThat = arguments.length > 1;
+      return function(/* ...args */){
+        var length = min(n, arguments.length)
+          , args   = Array(length)
+          , i      = 0;
+        while(length > i)args[i] = arguments[i++];
+        return invoke(fn, args, isThat ? that : this);
+      }
+    },
+    /**
      * fn(a, b, c, ...) -> a.fn(b, c, ...)
@@ -49,19 +49,38 @@ * Alternatives:
       var fn = this;
-      return function(/*...args*/){
+      return function(/* ...args */){
         var args = [this]
           , i    = 0;
         while(arguments.length > i)args.push(arguments[i++]);
-        return apply.call(fn, undefined, args);
+        return invoke(fn, args);
       }
     }
-  }, $tie));
-  $define(PROTO, ARRAY, $tie);
-  $define(PROTO, REGEXP, $tie);
-  $define(STATIC, OBJECT, {
-    tie: unbind(tie)
   });
-  Export.useTie = function(){
-    $define(PROTO, OBJECT, $tie);
+  
+  /**
+   * Alternatives:
+   * http://www.2ality.com/2013/06/auto-binding.html
+   * http://livescript.net/#property-access -> foo~bar
+   * http://lodash.com/docs#bindKey
+   */
+  function tie(key){
+    var that   = this
+      , _      = path._
+      , holder = false
+      , length = arguments.length
+      , i = 1, args;
+    if(length < 2)return ctx(that[key], that, -1);
+    args = Array(length - 1)
+    while(length > i)if((args[i - 1] = arguments[i++]) === _)holder = true;
+    return partial(that[key], args, length, holder, _, true, that);
+  }
+
+  $define(STATIC, OBJECT, {tie: core.tie = ctx(call, tie)});
+  
+  hidden(path._, TO_STRING, function(){
     return _;
-  }
-}();
+  });
+  DESCRIPTORS && hidden(ObjectProto, _, tie);
+  hidden(FunctionProto, _, tie);
+  hidden(ArrayProto, _, tie);
+  hidden(RegExp[PROTOTYPE], _, tie);
+}(uid('tie'));

src/console.js

@@ -1,10 +0,8 @@
-/**
- * https://github.com/DeveloperToolsWG/console-object/blob/master/api.md
- * https://developer.mozilla.org/en-US/docs/Web/API/console
- * Alternatives:
- * https://github.com/paulmillr/console-polyfill
- * https://github.com/theshock/console-cap
- */
 !function(console){
-  var $console = transform.call(
+  var $console = turn.call(
+    /**
+     * Methods from:
+     * https://github.com/DeveloperToolsWG/console-object/blob/master/api.md
+     * https://developer.mozilla.org/en-US/docs/Web/API/console
+     */
     array('assert,count,clear,debug,dir,dirxml,error,exception,' +
@@ -14,4 +12,5 @@ 'group,groupCollapsed,groupEnd,info,log,table,trace,warn,' +
     function(memo, key){
+      var fn = console[key];
       memo[key] = function(){
-        if(enabled && console[key])return apply.call(console[key], console, arguments);
+        if(enabled && fn)return apply.call(fn, console, arguments);
       };
@@ -31,3 +30,3 @@ },
   } catch(e){}
-  $define(GLOBAL, {console: assign($console.log, $console)}, 1);
+  $define(GLOBAL + FORCED, {console: assign($console.log, $console)});
 }(global.console || {});

src/core.js

@@ -1,44 +0,55 @@
-// Shortcuts for property names
-var OBJECT         = 'Object'
-  , FUNCTION       = 'Function'
-  , ARRAY          = 'Array'
-  , STRING         = 'String'
-  , NUMBER         = 'Number'
-  , REGEXP         = 'RegExp'
-  , MAP            = 'Map'
-  , SET            = 'Set'
-  , WEAKMAP        = 'WeakMap'
-  , WEAKSET        = 'WeakSet'
-  , PROMISE        = 'Promise'
-  , ARGUMENTS      = 'Arguments'
-  , PROCESS        = 'process'
-  , PROTOTYPE      = 'prototype'
-  , CREATE_ELEMENT = 'createElement'
+var global          = returnThis()
+  // Shortcuts for [[Class]] & property names
+  , OBJECT          = 'Object'
+  , FUNCTION        = 'Function'
+  , ARRAY           = 'Array'
+  , STRING          = 'String'
+  , NUMBER          = 'Number'
+  , REGEXP          = 'RegExp'
+  , DATE            = 'Date'
+  , MAP             = 'Map'
+  , SET             = 'Set'
+  , WEAKMAP         = 'WeakMap'
+  , WEAKSET         = 'WeakSet'
+  , SYMBOL          = 'Symbol'
+  , PROMISE         = 'Promise'
+  , MATH            = 'Math'
+  , ARGUMENTS       = 'Arguments'
+  , PROTOTYPE       = 'prototype'
+  , CONSTRUCTOR     = 'constructor'
+  , TO_STRING       = 'toString'
+  , FOR_EACH        = 'forEach'
+  , PROCESS         = 'process'
+  , CREATE_ELEMENT  = 'createElement'
   // Aliases global objects and prototypes
-  , Function       = global[FUNCTION]
-  , Object         = global[OBJECT]
-  , Array          = global[ARRAY]
-  , String         = global[STRING]
-  , Number         = global[NUMBER]
-  , RegExp         = global[REGEXP]
-  , Map            = global[MAP]
-  , Set            = global[SET]
-  , WeakMap        = global[WEAKMAP]
-  , WeakSet        = global[WEAKSET]
-  , Promise        = global[PROMISE]
-  , Math           = global.Math
-  , TypeError      = global.TypeError
-  , setTimeout     = global.setTimeout
-  , clearTimeout   = global.clearTimeout
-  , setInterval    = global.setInterval
-  , setImmediate   = global.setImmediate
-  , clearImmediate = global.clearImmediate
-  , process        = global[PROCESS]
-  , document       = global.document
-  , Infinity       = 1 / 0
-  , $Array         = Array[PROTOTYPE]
-  , $Object        = Object[PROTOTYPE]
-  , $Function      = Function[PROTOTYPE]
-  , Export         = {};
-  
+  , Function        = global[FUNCTION]
+  , Object          = global[OBJECT]
+  , Array           = global[ARRAY]
+  , String          = global[STRING]
+  , Number          = global[NUMBER]
+  , RegExp          = global[REGEXP]
+  , Date            = global[DATE]
+  , Map             = global[MAP]
+  , Set             = global[SET]
+  , WeakMap         = global[WEAKMAP]
+  , WeakSet         = global[WEAKSET]
+  , Symbol          = global[SYMBOL]
+  , Math            = global[MATH]
+  , TypeError       = global.TypeError
+  , setTimeout      = global.setTimeout
+  , clearTimeout    = global.clearTimeout
+  , setInterval     = global.setInterval
+  , setImmediate    = global.setImmediate
+  , clearImmediate  = global.clearImmediate
+  , process         = global[PROCESS]
+  , nextTick        = process && process.nextTick
+  , document        = global.document
+  , define          = global.define
+  , ArrayProto      = Array[PROTOTYPE]
+  , ObjectProto     = Object[PROTOTYPE]
+  , FunctionProto   = Function[PROTOTYPE]
+  , Infinity        = 1 / 0
+  , core            = {}
+  , path            = framework ? global : core;
+
 // 7.2.3 SameValue(x, y)
@@ -49,5 +60,6 @@ var same = Object.is || function(x, y){
 // 7.2.4 SameValueZero(x, y)
-function same0(x, y){
-  return x === y || (x !== x && y !== y);
+function sameValueZero(x, y){
+  return x === y || x !== x && y !== y;
 }
+
 // http://jsperf.com/core-js-isobject
@@ -60,26 +72,31 @@ function isObject(it){
 }
-// native function?
-var nativeRegExp = /^\s*function[^{]+\{\s*\[native code\]\s*\}\s*$/;
-function isNative(it){
-  return nativeRegExp.test(it);
-}
-var toString = $Object.toString
+// Native function?
+var isNative = ctx(/./.test, /\[native code\]\s*\}\s*$/, 1);
+
+// Object internal [[Class]] or toStringTag
+// http://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring
+var toString = ObjectProto[TO_STRING]
+  , classes  = [ARGUMENTS, ARRAY, 'Boolean', DATE, 'Error', FUNCTION, NUMBER, REGEXP, STRING]
+    // define in es6_symbol module
   , TOSTRINGTAG;
-function setTag(constructor, tag, stat){
-  if(TOSTRINGTAG && constructor)(stat ? constructor : constructor[PROTOTYPE])[TOSTRINGTAG] = tag;
+function setToStringTag(constructor, tag, stat){
+  if(TOSTRINGTAG && constructor)set(stat ? constructor : constructor[PROTOTYPE], TOSTRINGTAG, tag);
 }
-// object internal [[Class]]
+function cof(it){
+  return it == undefined ? it === undefined ? 'Undefined' : 'Null' : toString.call(it).slice(8, -1);
+}
 function classof(it){
-  if(it == undefined)return it === undefined ? 'Undefined' : 'Null';
-  var cof = toString.call(it).slice(8, -1);
-  return TOSTRINGTAG && cof == OBJECT && it[TOSTRINGTAG] ? it[TOSTRINGTAG] : cof;
+  var klass = cof(it)
+    , tag;
+  if(klass == OBJECT && TOSTRINGTAG && (tag = it[TOSTRINGTAG]) && !~indexOf.call(classes, tag))return tag;
+  return klass;
 }
 
-// Function:
-var apply = $Function.apply
-  , call  = $Function.call
-  , path  = framework ? global : Export;
-Export._ = path._ = path._ || {};
-// partial apply
-function part(/*...args*/){
+// Function
+var apply = FunctionProto.apply
+  , call  = FunctionProto.call;
+// Placeholder
+core._ = path._ = framework ? path._ || {} : {};
+// Partial apply
+function part(/* ...args */){
   var length = arguments.length
@@ -89,84 +106,131 @@ , args   = Array(length)
     , _      = path._
-    , placeholder = false;
-  while(length > i)if((args[i] = arguments[i++]) === _)placeholder = true;
-  return createPartialApplication(this, args, length, placeholder, false);
+    , holder = false;
+  while(length > i)if((args[i] = arguments[i++]) === _)holder = true;
+  return partial(this, args, length, holder, _, false);
 }
-function ctx(fn, that){
+// Internal partial application & context binding
+function partial(fn, argsPart, lengthPart, holder, _, bind, context){
   assertFunction(fn);
-  return function(/*...args*/){
-    return fn.apply(that, arguments);
-  }
-}
-function createPartialApplication(fn, argsPart, lengthPart, placeholder, bind, context){
-  assertFunction(fn);
-  return function(/*...args*/){
+  return function(/* ...args */){
     var that   = bind ? context : this
-      , _      = path._
       , length = arguments.length
       , i = 0, j = 0, args;
-    if(!placeholder && length == 0)return fn.apply(that, argsPart);
+    if(!holder && length == 0)return invoke(fn, argsPart, that);
     args = argsPart.slice();
-    if(placeholder)for(;lengthPart > i; i++)if(args[i] === _)args[i] = arguments[j++];
+    if(holder)for(;lengthPart > i; i++)if(args[i] === _)args[i] = arguments[j++];
     while(length > j)args.push(arguments[j++]);
-    return fn.apply(that, args);
+    return invoke(fn, args, that);
   }
 }
-// unbind method from context
-// foo.fn(arg1, arg2, ...) => fn(foo, arg1, arg2, ...)
-function unbind(that){
-  return function(){
-    return call.apply(that, arguments);
+function ctx(fn, that, length){
+  assertFunction(fn);
+  if(~length && that === undefined)return fn;
+  switch(length){
+    case 1: return function(a){
+      return fn.call(that, a);
+    }
+    case 2: return function(a, b){
+      return fn.call(that, a, b);
+    }
+    case 3: return function(a, b, c){
+      return fn.call(that, a, b, c);
+    }
+  } return function(/* ...args */){
+      return fn.apply(that, arguments);
   }
 }
+// Fast apply
+// http://jsperf.lnkit.com/fast-apply/5
+function invoke(fn, args, that){
+  var un = that === undefined;
+  switch(args.length){
+    case 0: return un ? fn()
+                      : fn.call(that);
+    case 1: return un ? fn(args[0])
+                      : fn.call(that, args[0]);
+    case 2: return un ? fn(args[0], args[1])
+                      : fn.call(that, args[0], args[1]);
+    case 3: return un ? fn(args[0], args[1], args[2])
+                      : fn.call(that, args[0], args[1], args[2]);
+    case 4: return un ? fn(args[0], args[1], args[2], args[3])
+                      : fn.call(that, args[0], args[1], args[2], args[3]);
+    case 5: return un ? fn(args[0], args[1], args[2], args[3], args[4])
+                      : fn.call(that, args[0], args[1], args[2], args[3], args[4]);
+  } return              fn.apply(that, args);
+}
 
 // Object:
-var _hasOwn = $Object.hasOwnProperty;
+var create           = Object.create
+  , getPrototypeOf   = Object.getPrototypeOf
+  , defineProperty   = Object.defineProperty
+  , defineProperties = Object.defineProperties
+  , getOwnDescriptor = Object.getOwnPropertyDescriptor
+  , getKeys          = Object.keys
+  , getNames         = Object.getOwnPropertyNames
+  , hasOwnProperty   = ObjectProto.hasOwnProperty
+  , isEnumerable     = ObjectProto.propertyIsEnumerable
+  , __PROTO__        = '__proto__' in ObjectProto
+  // Dummy, fix for not array-like ES3 string in es5 module
+  , ES5Object        = Object;
 function has(object, key){
-  return _hasOwn.call(object, key);
+  return hasOwnProperty.call(object, key);
 }
-var create                   = Object.create
-  , getPrototypeOf           = Object.getPrototypeOf
-  , defineProperty           = Object.defineProperty
-  , defineProperties         = Object.defineProperties
-  , getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor
-  , keys                     = Object.keys
-  , getOwnPropertyNames      = Object.getOwnPropertyNames
-  , isEnumerable             = $Object.propertyIsEnumerable
-  , __PROTO__ = '__proto__' in $Object
-  , DESCRIPTORS = true
-  // Dummy, fix for not array-like ES3 string in es5.js
-  , ES5Object = Object;
-// http://wiki.ecmascript.org/doku.php?id=strawman:extended_object_api
-function getOwnPropertyDescriptors(object){
-  var result = {}
-    , names  = getOwnPropertyNames(object)
-    , length = names.length
-    , i      = 0
-    , key;
-  while(length > i)result[key = names[i++]] = getOwnPropertyDescriptor(object, key);
-  return result;
-}
-// http://wiki.ecmascript.org/doku.php?id=harmony:extended_object_api
-function getPropertyDescriptor(object, key){
-  if(key in object)do {
-    if(has(object, key))return getOwnPropertyDescriptor(object, key);
-  } while(object = getPrototypeOf(object));
-}
-// 19.1.2.1 Object.assign ( target, source, ... )
+// 19.1.2.1 Object.assign(target, source, ...)
 var assign = Object.assign || function(target, source){
-  target = Object(target);
-  var agsLength = arguments.length
-    , i         = 1;
-  while(agsLength > i){
-    source = ES5Object(arguments[i++]);
-    var props  = keys(source)
-      , length = props.length
+  var T = Object(target)
+    , l = arguments.length
+    , i = 1;
+  while(l > i){
+    var S      = ES5Object(arguments[i++])
+      , keys   = getKeys(S)
+      , length = keys.length
       , j      = 0
       , key;
-    while(length > j)target[key = props[j++]] = source[key];
+    while(length > j)T[key = keys[j++]] = S[key];
   }
-  return target;
+  return T;
 }
+function createObjectToArray(isEntries){
+  return function(object){
+    var O      = ES5Object(object)
+      , keys   = getKeys(object)
+      , length = keys.length
+      , i      = 0
+      , result = Array(length)
+      , key;
+    while(length > i)result[i] = isEntries ? [key = keys[i++], O[key]] : O[keys[i++]];
+    return result;
+  }
+}
+function keyOf(object, searchElement){
+  var O      = ES5Object(object)
+    , keys   = getKeys(O)
+    , length = keys.length
+    , index  = 0
+    , key;
+  while(length > index)if(O[key = keys[index++]] === searchElement)return key;
+}
+// Simple structured cloning
+function clone(it, stack1, stack2){
+  var klass   = cof(it)
+    , isArray = klass == ARRAY
+    , index, result, i, l, keys, key;
+  if(isArray || klass == OBJECT){
+    index = indexOf.call(stack1, it);
+    if(~index)return stack2[index];
+    stack1.push(it);
+    stack2.push(result = isArray ? Array(l = it.length) : create(getPrototypeOf(it)));
+    if(isArray){
+      for(i = 0; l > i;)if(has(it, i))result[i] = clone(it[i++], stack1, stack2);
+    } else {
+      keys = getKeys(it);
+      l    = keys.length;
+      for(i = 0; l > i;)result[key = keys[i++]] = clone(it[key], stack1, stack2);
+    }
+    return result;
+  }
+  return it;
+}
 
-// Array:
+// Array
 // array('str1,str2,str3') => ['str1', 'str2', 'str3']
@@ -176,22 +240,65 @@ function array(it){
 }
-var push     = $Array.push
-  , unshift  = $Array.unshift
-  , slice    = $Array.slice
-  , $indexOf = Array.indexOf || unbind($Array.indexOf)
-  , $forEach = Array.forEach || unbind($Array.forEach)
-  , $slice   = Array.slice || function(arrayLike, from){
-      return slice.call(arrayLike, from);
+var push    = ArrayProto.push
+  , unshift = ArrayProto.unshift
+  , slice   = ArrayProto.slice
+  , splice  = ArrayProto.splice
+  , indexOf = ArrayProto.indexOf
+  , forEach = ArrayProto[FOR_EACH];
+/*
+ * 0 -> forEach
+ * 1 -> map
+ * 2 -> filter
+ * 3 -> some
+ * 4 -> every
+ * 5 -> find
+ * 6 -> findIndex
+ */
+function createArrayMethod(type){
+  var isMap       = type == 1
+    , isFilter    = type == 2
+    , isSome      = type == 3
+    , isEvery     = type == 4
+    , isFindIndex = type == 6
+    , noholes     = type == 5 || isFindIndex;
+  return function(callbackfn, thisArg /* = undefined */){
+    var f      = ctx(callbackfn, thisArg, 3)
+      , O      = Object(this)
+      , self   = ES5Object(O)
+      , length = toLength(self.length)
+      , index  = 0
+      , result = isMap ? Array(length) : isFilter ? [] : undefined
+      , val, res;
+    for(;length > index; index++)if(noholes || index in self){
+      val = self[index];
+      res = f(val, index, O);
+      if(type){
+        if(isMap)result[index] = res;             // map
+        else if(res)switch(type){
+          case 3: return true;                    // some
+          case 5: return val;                     // find
+          case 6: return index;                   // findIndex
+          case 2: result.push(val);               // filter
+        } else if(isEvery)return false;           // every
+      }
     }
-// simple reduce to object
-function transform(mapfn, target /* = [] */){
+    return isFindIndex ? -1 : isSome || isEvery ? isEvery : result;
+  }
+}
+// Simple reduce to object
+function turn(mapfn, target /* = [] */){
   assertFunction(mapfn);
-  target = target == undefined ? [] : Object(target);
-  var self   = ES5Object(this)
-    , length = toLength(self.length)
-    , i      = 0;
-  for(;length > i; i++)if(i in self && mapfn(target, self[i], i, this) === false)break;
-  return target;
+  var memo   = target == undefined ? [] : Object(target)
+    , O      = ES5Object(this)
+    , length = toLength(O.length)
+    , index  = 0;
+  for(;length > index; index++){
+    if(mapfn(memo, O[index], index, this) === false)break;
+  }
+  return memo;
 }
+function generic(A, B){
+  return typeof A == 'function' ? A : B; // strange IE quirks mode bug -> use typeof vs isFunction
+}
 
-// Math:
+// Math
 var ceil   = Math.ceil
@@ -203,3 +310,3 @@ , floor  = Math.floor
   , random = Math.random
-  , MAX_SAFE_INTEGER = pow(2, 53) - 1; // 0x1fffffffffffff == 9007199254740991
+  , MAX_SAFE_INTEGER = 0x1fffffffffffff; // pow(2, 53) - 1 == 9007199254740991
 // 7.1.4 ToInteger
@@ -214,76 +321,111 @@ var toInteger = Number.toInteger || function(it){
 
-// Assertion & errors:
+function createEscaper(regExp, replace, isStatic){
+  var replacer = isObject(replace) ? function(part){
+    return replace[part];
+  } : replace;
+  return function(it){
+    return String(isStatic ? it : this).replace(regExp, replacer);
+  }
+}
+
+// Assertion & errors
 var REDUCE_ERROR = 'Reduce of empty object with no initial value';
-function assert(condition){
-  if(!condition)throw TypeError($slice(arguments, 1).join(' '));
+function assert(condition, msg1, msg2){
+  if(!condition)throw TypeError(msg2 ? msg1 + msg2 : msg1);
 }
 function assertFunction(it){
-  if(!isFunction(it))throw TypeError(it + 'is not a function!');
+  assert(isFunction(it), it, ' is not a function!');
+  return it;
 }
 function assertObject(it){
-  if(!isObject(it))throw TypeError(it + 'is not an object!');
+  assert(isObject(it), it, ' is not an object!');
+  return it;
 }
-function assertInstance(it, constructor, name){
-  assert(it instanceof constructor, name, ": please use the 'new' operator!");
+function assertInstance(it, Constructor, name){
+  assert(it instanceof Constructor, name, ": use the 'new' operator!");
 }
 
-var symbolUniq = 0;
-function symbol(key){
-  return '@@' + key + '_' + (++symbolUniq + random()).toString(36);
-}
+// Property descriptors & Symbol
 function descriptor(bitmap, value){
   return {
-    enumerable  : !!(bitmap & 1),
-    configurable: !!(bitmap & 2),
-    writable    : !!(bitmap & 4),
+    enumerable  : !(bitmap & 1),
+    configurable: !(bitmap & 2),
+    writable    : !(bitmap & 4),
     value       : value
   }
 }
-function hidden(object, key, value){
-  return defineProperty(object, key, descriptor(6, value));
+function simpleSet(object, key, value){
+  object[key] = value;
+  return object;
 }
+function createDefiner(bitmap){
+  return DESCRIPTORS ? function(object, key, value){
+    return defineProperty(object, key, descriptor(bitmap, value));
+  } : simpleSet;
+}
+function uid(key){
+  return SYMBOL + '(' + key + ')_' + (++sid + random())[TO_STRING](36);
+}
+// The engine works fine with descriptors? Thank's IE8 for his funny defineProperty.
+var DESCRIPTORS = !!function(){try{return defineProperty({}, 0, ObjectProto)}catch(e){}}()
+  , sid         = 0
+  , hidden      = createDefiner(1)
+  , symbol      = Symbol || uid
+  , set         = Symbol ? simpleSet : hidden;
 
-var ITERATOR, forOf, isIterable, getIterator, objectIterators; // define in symbol & iterators modules
+// Collections & iterators variables, define in over modules
+var ITERATOR
+  , $for
+  , isIterable
+  , getIterator
+  , COLLECTION_KEYS
+  , SHIM;
 
-var GLOBAL = 1
-  , STATIC = 2
-  , PROTO  = 4;
-function $define(type, name, source, forced /* = false */){
-  var key, own, prop
+// DOM
+var html = document && document.documentElement;
+
+// core
+var NODE   = cof(process) == PROCESS
+  , REQJS  = isFunction(define) && define.amd
+  // type bitmap
+  , FORCED = 1
+  , GLOBAL = 2
+  , STATIC = 4
+  , PROTO  = 8
+  , BIND   = 16
+  , WRAP   = 32;
+function $define(type, name, source){
+  var key, own, out, exp
     , isGlobal = type & GLOBAL
-    , isStatic = type & STATIC
-    , isProto  = type & PROTO
-    , target   = isGlobal ? global : isStatic ? global[name] : (global[name] || $Object)[PROTOTYPE]
-    , exports  = isGlobal ? Export : Export[name] || (Export[name] = {});
-  if(isGlobal){
-    forced = source;
-    source = name;
+    , target   = isGlobal ? global : (type & STATIC) ? global[name] : (global[name] || ObjectProto)[PROTOTYPE]
+    , exports  = isGlobal ? core : core[name] || (core[name] = {});
+  if(isGlobal)source = name;
+  for(key in source){
+    // there is a similar native
+    own = !(type & FORCED) && target && key in target && (!isFunction(target[key]) || isNative(target[key]));
+    // export native or passed
+    out = (own ? target : source)[key];
+    // bind timers to global for call from export context
+    if(type & BIND && own)exp = ctx(out, global);
+    // wrap global constructors for prevent change them in library
+    else if(type & WRAP && !framework && target[key] == out){
+      exp = function(param){
+        return this instanceof out ? new out(param) : out(param);
+      }
+      exp[PROTOTYPE] = out[PROTOTYPE];
+    } else exp = type & PROTO && isFunction(out) ? ctx(call, out) : out;
+    // .CORE mark
+    if(!own)out.CORE = exp.CORE = true;
+    // export
+    if(exports[key] != out)exports[key] = exp;
+    // extend global
+    framework && target && !own && (isGlobal || delete target[key]) && hidden(target, key, out);
   }
-  for(key in source)if(has(source, key)){
-    own  = !forced && target && has(target, key) && (!isFunction(target[key]) || isNative(target[key]));
-    prop = own ? target[key] : source[key];
-    // export to `C`
-    exports[key] = isProto && isFunction(prop) ? unbind(prop) : prop;
-    // if build as framework, extend global objects
-    framework && target && !own && (isGlobal || delete target[key])
-      && defineProperty(target, key, descriptor(6 + !isProto, source[key]));
-  }
 }
-function $defineTimer(key, fn){
-  if(framework)global[key] = fn;
-  Export[key] = global[key] != fn ? fn : ctx(fn, global);
-}
-// wrap to prevent obstruction of the global constructors, when build as library
-function wrapGlobalConstructor(Base){
-  if(framework || !isNative(Base))return Base;
-  function F(param){
-    // used on constructors that takes 1 argument
-    return this instanceof Base ? new Base(param) : Base(param);
-  }
-  F[PROTOTYPE] = Base[PROTOTYPE];
-  return F;
-}
-// export
-var isNode = classof(process) == PROCESS;
-if(isNode)module.exports = Export;
-if(!isNode || framework)global.C = Export;
+core.CORE = true;
+// CommonJS export
+if(NODE)module.exports = core;
+// RequireJS export
+if(REQJS)define(function(){return core});
+// Export to global object
+if(!NODE && !REQJS || framework)global.core = core;

src/date.js

@@ -1,10 +0,2 @@
-/**
- * Alternatives:
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl
- * https://github.com/andyearnshaw/Intl.js
- * http://momentjs.com/
- * http://sugarjs.com/api/Date/format
- * http://mootools.net/docs/more/Types/Date#Date:format
- */
-!function(formatRegExp, flexioRegExp, locales, current, SECONDS, MINUTES, HOURS, DATE, MONTH, YEAR){
+!function(formatRegExp, flexioRegExp, locales, current, SECONDS, MINUTES, HOURS, MONTH, YEAR){
   function createFormat(UTC){
@@ -19,8 +11,8 @@ return function(template, locale /* = current */){
         switch(part){
-          case 'ms'   : var ms = get('Milliseconds');                           // Milliseconds : 001-999
-            return ms > 99 ? ms : ms > 9 ? '0' + ms : '00' + ms;
-          case 's'    : return get(SECONDS);                                    // Seconds      : 1-59
-          case 'ss'   : return lz(get(SECONDS));                                // Seconds      : 01-59
-          case 'm'    : return get(MINUTES);                                    // Minutes      : 1-59
-          case 'mm'   : return lz(get(MINUTES));                                // Minutes      : 01-59
+          case 'ms'   : var ms = get('Milliseconds');                           // Milliseconds : 000-999
+            return ms > 99 ? ms : '0' + lz(ms);
+          case 's'    : return get(SECONDS);                                    // Seconds      : 0-59
+          case 'ss'   : return lz(get(SECONDS));                                // Seconds      : 00-59
+          case 'm'    : return get(MINUTES);                                    // Minutes      : 0-59
+          case 'mm'   : return lz(get(MINUTES));                                // Minutes      : 00-59
           case 'h'    : return get(HOURS);                                      // Hours        : 0-23
@@ -35,6 +27,5 @@ case 'hh'   : return lz(get(HOURS));                                  // Hours        : 00-23
           case 'MM'   : return dict.MM[get(MONTH)];                             // Month        : Января
-          case 'YY'   : return lz(get(YEAR) % 100);                             // Year         : 13
-          case 'YYYY' : return get(YEAR);                                       // Year         : 2013
-        }
-        return part;
+          case 'YY'   : return lz(get(YEAR) % 100);                             // Year         : 14
+          case 'YYYY' : return get(YEAR);                                       // Year         : 2014
+        } return part;
       });
@@ -47,14 +38,14 @@ }
   function addLocale(lang, locale){
+    function split(index){
+      return turn.call(array(locale.months), function(memo, it){
+        memo.push(it.replace(flexioRegExp, '$' + index));
+      });
+    }
     locales[lang] = {
       W : array(locale.weekdays),
-      MM: flexio(locale.months, 1),
-      M : flexio(locale.months, 2)
+      MM: split(1),
+      M : split(2)
     };
-    return Date;
+    return this;
   }
-  function flexio(locale, index){
-    return transform.call(array(locale), function(memo, it){
-      memo.push(it.replace(flexioRegExp, '$' + index));
-    });
-  }
   $define(STATIC, DATE, {
@@ -67,4 +58,4 @@ locale: function(locale){
   $define(PROTO, DATE, {
-    format:    createFormat(0),
-    formatUTC: createFormat(1)
+    format:    createFormat(false),
+    formatUTC: createFormat(true)
   });
@@ -79,2 +70,2 @@ addLocale(current, {
   });
-}(/\b\w{1,4}\b/g, /:(.*)\|(.*)$/, {}, 'en', 'Seconds', 'Minutes', 'Hours', 'Date', 'Month', 'FullYear');
+}(/\b\w{1,4}\b/g, /:(.*)\|(.*)$/, {}, 'en', 'Seconds', 'Minutes', 'Hours', 'Month', 'FullYear');

src/deferred.js

@@ -13,16 +13,16 @@ /**
     function Deferred(args){
-      this[ID] = set.apply(global, this[ARGUMENTS] = args)
+      this[ID] = invoke(set, this[ARGUMENTS] = args);
     }
-    Deferred[PROTOTYPE].set = function(){
+    hidden(Deferred[PROTOTYPE], 'set', function(){
       clear(this[ID]);
-      this[ID] = set.apply(global, this[ARGUMENTS]);
+      this[ID] = invoke(set, this[ARGUMENTS]);
       return this;
-    }
-    Deferred[PROTOTYPE].clear = function(){
+    });
+    hidden(Deferred[PROTOTYPE], 'clear', function(){
       clear(this[ID]);
       return this;
-    }
+    });
     return function(/* ...args */){
-      assertFunction(this);
-      var args = [this], i = 0;
+      var args = [assertFunction(this)]
+        , i    = 0;
       while(arguments.length > i)args.push(arguments[i++]);
@@ -33,6 +33,6 @@ return new Deferred(args);
   $define(PROTO, FUNCTION, {
-    timeout:   createDeferredFactory(setTimeout, clearTimeout),
-    interval:  createDeferredFactory(setInterval, clearInterval),
+    timeout:   createDeferredFactory(setTimeout,   clearTimeout),
+    interval:  createDeferredFactory(setInterval,  clearInterval),
     immediate: createDeferredFactory(setImmediate, clearImmediate)
   });
 }(symbol('arguments'), symbol('id'));

src/dict.js

@@ -5,5 +5,5 @@ !function(){
     if(iterable != undefined){
-      if(isIterable(iterable))forOf(iterable, function(key, value){
+      if($for && isIterable(iterable))$for(iterable, true).of(function(key, value){
         dict[key] = value;
-      }, undefined, 1);
+      });
       else assign(dict, iterable);
@@ -14,130 +14,89 @@ }
   Dict[PROTOTYPE] = null;
-  function findKey(object, fn, that /* = undefined */){
-    assertFunction(fn);
-    var O      = ES5Object(object)
-      , props  = keys(O)
-      , length = props.length
-      , i      = 0
-      , key;
-    while(length > i){
-      if(fn.call(that, O[key = props[i++]], key, object))return key;
-    }
-  }
-  function keyOf(object, searchElement){
-    var O      = ES5Object(object)
-      , props  = keys(O)
-      , length = props.length
-      , i      = 0
-      , key;
-    while(length > i)if(same0(O[key = props[i++]], searchElement))return key;
-  }
-  assign(Dict, objectIterators, {
-    /**
-     * Object enumumerabe
-     * Alternatives:
-     * http://underscorejs.org/ _.{...enumerable}
-     * http://sugarjs.com/api/Object/enumerable Object.{...enumerable}
-     * http://mootools.net/docs/core/Types/Object Object.{...enumerable}
-     * http://api.jquery.com/category/utilities/ $.{...enumerable}
-     * http://docs.angularjs.org/api/ng/function angular.{...enumerable}
-     */
-    every: function(object, fn, that /* = undefined */){
-      assertFunction(fn);
-      var O      = ES5Object(object)
-        , props  = keys(O)
-        , length = props.length
+  
+  /*
+   * 0 -> forEach
+   * 1 -> map
+   * 2 -> filter
+   * 3 -> some
+   * 4 -> every
+   * 5 -> find
+   * 6 -> findKey
+   */
+  function createDictMethod(type){
+    var isMap    = type == 1
+      , isFilter = type == 2
+      , isSome   = type == 3
+      , isEvery  = type == 4;
+    return function(object, callbackfn, thisArg /* = undefined */){
+      var f      = ctx(callbackfn, thisArg, 3)
+        , O      = ES5Object(object)
+        , keys   = getKeys(O)
+        , length = keys.length
         , i      = 0
-        , key;
+        , result = isMap || isFilter ? new (generic(this, Dict)) : undefined
+        , key, val, res;
       while(length > i){
-        if(!fn.call(that, O[key = props[i++]], key, object))return false;
+        key = keys[i++];
+        val = O[key];
+        res = f(val, key, object);
+        if(type){
+          if(isMap)result[key] = res;             // map
+          else if(res)switch(type){
+            case 3: return true;                  // some
+            case 5: return val;                   // find
+            case 6: return key;                   // findKey
+            case 2: result[key] = val;            // filter
+          } else if(isEvery)return false;         // every
+        }
       }
-      return true;
-    },
-    filter: function(object, fn, that /* = undefined */){
-      assertFunction(fn);
+      return isSome || isEvery ? isEvery : result;
+    }
+  }
+  function createDictReduce(isTurn){
+    return function(object, mapfn, init){
+      assertFunction(mapfn);
       var O      = ES5Object(object)
-        , result = create(null)
-        , props  = keys(O)
-        , length = props.length
+        , keys   = getKeys(O)
+        , length = keys.length
         , i      = 0
-        , key;
+        , memo, key, result;
+      if(isTurn)memo = init == undefined ? new (generic(this, Dict)) : Object(init);
+      else if(arguments.length < 3){
+        assert(length > i, REDUCE_ERROR);
+        memo = O[keys[i++]];
+      } else memo = Object(init);
       while(length > i){
-        if(fn.call(that, O[key = props[i++]], key, object))result[key] = O[key];
+        result = mapfn(memo, O[key = keys[i++]], key, object);
+        if(isTurn){
+          if(result === false)break;
+        } else memo = result;
       }
-      return result;
-    },
-    find: function(object, fn, that /* = undefined */){
-      var index = findKey(object, fn, that);
-      return index === undefined ? undefined : ES5Object(object)[index];
-    },
-    findKey: findKey,
-    forEach: function(object, fn, that /* = undefined */){
-      assertFunction(fn);
+      return memo;
+    }
+  }
+  assign(Dict, {
+    forEach: createDictMethod(0),
+    map:     createDictMethod(1),
+    filter:  createDictMethod(2),
+    some:    createDictMethod(3),
+    every:   createDictMethod(4),
+    find:    createDictMethod(5),
+    findKey: createDictMethod(6),
+    reduce:  createDictReduce(false),
+    turn:    createDictReduce(true),
+    keyOf:   keyOf,
+    contains: function(object, searchElement){
       var O      = ES5Object(object)
-        , props  = keys(O)
-        , length = props.length
-        , i      = 0
-        , key;
-      while(length > i)fn.call(that, O[key = props[i++]], key, object);
-      return object;
-    },
-    keyOf: keyOf,
-    map: function(object, fn, that /* = undefined */){
-      assertFunction(fn);
-      var O      = ES5Object(object)
-        , result = create(null)
-        , props  = keys(O)
-        , length = props.length
-        , i      = 0
-        , key;
+        , keys   = getKeys(O)
+        , length = keys.length
+        , i      = 0;
       while(length > i){
-        result[key = props[i++]] = fn.call(that, O[key], key, object);
+        if(sameValueZero(O[keys[i++]], searchElement))return true;
       }
-      return result;
-    },
-    reduce: function(object, fn, result /* = undefined */, that /* = undefined */){
-      assertFunction(fn);
-      var O      = ES5Object(object)
-        , props  = keys(O)
-        , i      = 0
-        , length = props.length
-        , key;
-      if(arguments.length < 3){
-        assert(length--, REDUCE_ERROR);
-        result = O[props.shift()];
-      }
-      while(length > i){
-        result = fn.call(that, result, O[key = props[i++]], key, object);
-      }
-      return result;
-    },
-    some: function(object, fn, that /* = undefined */){
-      assertFunction(fn);
-      var O      = ES5Object(object)
-        , props  = keys(O)
-        , length = props.length
-        , i      = 0
-        , key;
-      while(length > i){
-        if(fn.call(that, O[key = props[i++]], key, object))return true;
-      }
       return false;
     },
-    transform: function(object, mapfn, target /* = Dict() */){
-      assertFunction(mapfn);
-      target = target == undefined ? create(null) : Object(target);
-      var O      = ES5Object(object)
-        , props  = keys(O)
-        , length = props.length
-        , i      = 0
-        , key;
-      while(length > i){
-        if(mapfn(target, O[key = props[i++]], key, object) === false)break;
-      }
-      return target;
+    clone: function(it){
+      return clone(it, [], []);
     },
-    contains: function(object, value){
-      return keyOf(object, value) !== undefined;
-    },
-    // Has / get own property
+    // Has / get / set own property
     has: has,
@@ -147,4 +106,5 @@ get: function(object, key){
     },
+    set: createDefiner(0),
     isDict: function(it){
-      return getPrototypeOf(it) == null;
+      return getPrototypeOf(it) == Dict[PROTOTYPE];
     }
@@ -151,0 +111,0 @@ });

src/es5.js

 /**
  * ECMAScript 5 shim
  * http://es5.github.io/
- * Alternatives:
- * https://github.com/es-shims/es5-shim
- * https://github.com/ddrcode/ddr-ecma5
- * http://augmentjs.com/
- * https://github.com/inexorabletash/polyfill/blob/master/es5.js
  */
 !function(){
-  var Empty              = Function()
-    , _classof           = classof
-    , whitespace         = '[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]'
-    , trimRegExp         = RegExp('^' + whitespace + '+|' + whitespace + '+$', 'g')
-    // for fix IE 8- don't enum bug https://developer.mozilla.org/en-US/docs/ECMAScript_DontEnum_attribute
-    // http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
-    , hiddenNames1       = array('toString,toLocaleString,valueOf,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,constructor')
-    , hiddenNames2       = hiddenNames1.concat(['length'])
-    , hiddenNames1Length = hiddenNames1.length
+  var Empty       = Function()
+    , _classof    = classof
+    , whitespace  = '[\x09\x0A\x0B\x0C\x0D\x20\xA0\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF]'
+    // For fix IE 8- don't enum bug https://developer.mozilla.org/en-US/docs/ECMAScript_DontEnum_attribute#JScript_DontEnum_Bug
+    , slyKeys1    = array(TO_STRING + ',toLocaleString,valueOf,hasOwnProperty,isPrototypeOf,propertyIsEnumerable,' + CONSTRUCTOR)
+    , slyKeys2    = slyKeys1.concat(PROTOTYPE, 'length')
+    , slyKeysLen1 = slyKeys1.length
+    , dontEnumBug = !isEnumerable.call({toString: undefined}, TO_STRING)
+    , $PROTO      = symbol(PROTOTYPE)
     // Create object with null prototype
-    , createDict         = __PROTO__
+    , createDict  = __PROTO__
       ? function(){
@@ -28,9 +23,8 @@ return {__proto__: null};
           var iframe = document[CREATE_ELEMENT]('iframe')
-            , i      = hiddenNames1Length
-            , body   = document.body || document.documentElement
+            , i      = slyKeysLen1
             , iframeDocument;
           iframe.style.display = 'none';
-          body.appendChild(iframe);
+          html.appendChild(iframe);
           iframe.src = 'javascript:';
-          iframeDocument = iframe.contentWindow.document || iframe.contentDocument || iframe.document;
+          iframeDocument = iframe.contentWindow.document;
           iframeDocument.open();
@@ -40,28 +34,25 @@ iframeDocument.write('<script>document.F=Object</script>');
           createDict = iframeDocument.F;
-          while(i--)delete createDict[PROTOTYPE][hiddenNames1[i]];
+          while(i--)delete createDict[PROTOTYPE][slyKeys1[i]];
           return createDict();
         }
-    , createGetKeys = function(names, length){
-        return function(O){
-          O = ES5Object(O);
-          var i      = 0
+    , createGetKeys = function(names, length, isNames){
+        return function(object){
+          var O      = ES5Object(object)
+            , i      = 0
             , result = []
             , key;
-          for(key in O)has(O, key) && result.push(key);
-          // hidden names for Object.getOwnPropertyNames & don't enum bug fix for Object.keys
-          while(length > i)has(O, key = names[i++]) && !~$indexOf(result, key) && result.push(key);
+          for(key in O)(key !== $PROTO) && has(O, key) && result.push(key);
+          // Hidden names for Object.getOwnPropertyNames & don't enum bug fix for Object.keys
+          if(dontEnumBug || isNames)while(length > i)if(has(O, key = names[i++])){
+            ~indexOf.call(result, key) || result.push(key);
+          }
           return result;
         }
       };
-  // The engine works fine with descriptors? Thank's IE8 for his funny defineProperty.
-  try {
-    Object.defineProperty({}, 0, $Object);
-  } catch(e){
-    DESCRIPTORS = false;
-    getOwnPropertyDescriptor = function(O, P){
-      if(has(O, P))return descriptor(6 + isEnumerable.call(O, P), O[P]);
+  if(!DESCRIPTORS){
+    getOwnDescriptor = function(O, P){
+      if(has(O, P))return descriptor(!isEnumerable.call(O, P), O[P]);
     };
     defineProperty = function(O, P, Attributes){
-      assertObject(O);
-      if('value' in Attributes)O[P] = Attributes.value;
+      if('value' in Attributes)assertObject(O)[P] = Attributes.value;
       return O;
@@ -71,8 +62,8 @@ };
       assertObject(O);
-      var names  = keys(Properties)
-        , length = names.length
+      var keys   = getKeys(Properties)
+        , length = keys.length
         , i = 0
         , P, Attributes;
       while(length > i){
-        P          = names[i++];
+        P          = keys[i++];
         Attributes = Properties[P];
@@ -82,7 +73,7 @@ if('value' in Attributes)O[P] = Attributes.value;
       return O;
-    }
+    };
   }
-  $define(STATIC, OBJECT, {
+  $define(STATIC + FORCED * !DESCRIPTORS, OBJECT, {
     // 19.1.2.6 / 15.2.3.3 Object.getOwnPropertyDescriptor(O, P)
-    getOwnPropertyDescriptor: getOwnPropertyDescriptor,
+    getOwnPropertyDescriptor: getOwnDescriptor,
     // 19.1.2.4 / 15.2.3.6 Object.defineProperty(O, P, Attributes)
@@ -92,25 +83,28 @@ defineProperty: defineProperty,
     defineProperties: defineProperties
-  }, 1);
+  });
   $define(STATIC, OBJECT, {
     // 19.1.2.9 / 15.2.3.2 Object.getPrototypeOf(O) 
-    getPrototypeOf: function(O){
-      var constructor
-        , proto = O.__proto__ || ((constructor = O.constructor) ? constructor[PROTOTYPE] : $Object);
-      return O !== proto && 'toString' in O ? proto : null;
+    getPrototypeOf: getPrototypeOf = getPrototypeOf || function(O){
+      assertObject(O);
+      if(has(O, $PROTO))return O[$PROTO];
+      if(__PROTO__ && '__proto__' in O)return O.__proto__;
+      if(isFunction(O[CONSTRUCTOR]) && O != O[CONSTRUCTOR][PROTOTYPE])return O[CONSTRUCTOR][PROTOTYPE];
+      if(O instanceof Object)return ObjectProto;
+      return null;
     },
     // 19.1.2.7 / 15.2.3.4 Object.getOwnPropertyNames(O)
-    getOwnPropertyNames: createGetKeys(hiddenNames2, hiddenNames2.length),
+    getOwnPropertyNames: getNames = getNames || createGetKeys(slyKeys2, slyKeys2.length, true),
     // 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])
-    create: function(O, /*?*/Properties){
+    create: create = create || function(O, /*?*/Properties){
       if(O === null)return Properties ? defineProperties(createDict(), Properties) : createDict();
-      assertObject(O);
-      Empty[PROTOTYPE] = O;
+      Empty[PROTOTYPE] = assertObject(O);
       var result = new Empty();
+      Empty[PROTOTYPE] = null;
       if(Properties)defineProperties(result, Properties);
       // add __proto__ for Object.getPrototypeOf shim
-      __PROTO__ || result.constructor[PROTOTYPE] === O || (result.__proto__ = O);
+      __PROTO__ || result[CONSTRUCTOR][PROTOTYPE] === O || (result[$PROTO] = O);
       return result;
     },
     // 19.1.2.14 / 15.2.3.14 Object.keys(O)
-    keys: createGetKeys(hiddenNames1, hiddenNames1Length)
+    keys: getKeys = getKeys || createGetKeys(slyKeys1, slyKeysLen1, false)
   });
@@ -121,9 +115,8 @@
     bind: function(scope /*, args... */){
-      var fn   = this
-        , args = $slice(arguments, 1);
-      assertFunction(fn);
+      var fn   = assertFunction(this)
+        , args = slice.call(arguments, 1);
       function bound(/* args... */){
-        var _args = args.concat($slice(arguments))
-          , result, that
-        if(this instanceof fn)return isObject(result = apply.call(that = create(fn[PROTOTYPE]), scope, _args)) ? result : that;
+        var _args = args.concat(slice.call(arguments))
+          , result, that;
+        if(this instanceof fn)return isObject(result = invoke(that = create(fn[PROTOTYPE]), _args, scope)) ? result : that;
         return apply.call(fn, scope, _args);
@@ -136,3 +129,3 @@ }
   
-  // fix for not array-like ES3 string
+  // Fix for not array-like ES3 string
   function arrayMethodFix(fn){
@@ -145,113 +138,76 @@ return function(){
     ES5Object = function(it){
-      return _classof(it) == STRING ? it.split('') : Object(it);
+      return cof(it) == STRING ? it.split('') : Object(it);
     }
     slice = arrayMethodFix(slice);
   }
-  $define(PROTO, ARRAY, {
+  $define(PROTO + FORCED * (ES5Object != Object), ARRAY, {
     slice: slice,
-    join: arrayMethodFix($Array.join)
-  }, ES5Object != Object);
+    join: arrayMethodFix(ArrayProto.join)
+  });
   
   // 22.1.2.2 / 15.4.3.2 Array.isArray(arg)
-  $define(STATIC, ARRAY, {isArray: function(arg){
-    return _classof(arg) == ARRAY
-  }});
-  $define(PROTO, ARRAY, {
-    // 22.1.3.11 / 15.4.4.14 Array.prototype.indexOf(searchElement [, fromIndex])
-    indexOf: function(searchElement, fromIndex /* = 0 */){
-      var self   = ES5Object(this)
-        , length = toLength(self.length)
-        , i      = fromIndex | 0;
-      if(0 > i)i = toLength(length + i);
-      for(;length > i; i++)if(i in self && self[i] === searchElement)return i;
-      return -1;
-    },
-    // 22.1.3.14 / 15.4.4.15 Array.prototype.lastIndexOf(searchElement [, fromIndex])
-    lastIndexOf: function(searchElement, fromIndex /* = @[*-1] */){
-      var self   = ES5Object(this)
-        , length = toLength(self.length)
-        , i      = length - 1;
-      if(arguments.length > 1)i = min(i, fromIndex | 0);
-      if(0 > i)i = toLength(length + i);
-      for(;i >= 0; i--)if(i in self && self[i] === searchElement)return i;
-      return -1;
-    },
-    // 22.1.3.5 / 15.4.4.16 Array.prototype.every(callbackfn [, thisArg])
-    every: function(callbackfn, thisArg /* = undefined */){
+  $define(STATIC, ARRAY, {
+    isArray: function(arg){
+      return cof(arg) == ARRAY
+    }
+  });
+  function createArrayReduce(isRight){
+    return function(callbackfn, memo /* = @.0 */){
       assertFunction(callbackfn);
-      var self   = ES5Object(this)
-        , length = toLength(self.length)
-        , i      = 0;
-      for(;length > i; i++){
-        if(i in self && !callbackfn.call(thisArg, self[i], i, this))return false;
+      var O      = ES5Object(this)
+        , length = toLength(O.length)
+        , index  = isRight ? length - 1 : 0
+        , inc    = isRight ? -1 : 1;
+      if(2 > arguments.length)for(;;){
+        if(index in O){
+          memo = O[index];
+          index += inc;
+          break;
+        }
+        index += inc;
+        assert(isRight ? index >= 0 : length > index, REDUCE_ERROR);
       }
-      return true;
-    },
-    // 22.1.3.23 / 15.4.4.17 Array.prototype.some(callbackfn [, thisArg])
-    some: function(callbackfn, thisArg /* = undefined */){
-      assertFunction(callbackfn);
-      var self   = ES5Object(this)
-        , length = toLength(self.length)
-        , i      = 0;
-      for(;length > i; i++){
-        if(i in self && callbackfn.call(thisArg, self[i], i, this))return true;
+      for(;isRight ? index >= 0 : length > index; index += inc)if(index in O){
+        memo = callbackfn(memo, O[index], index, this);
       }
-      return false;
-    },
+      return memo;
+    }
+  }
+  $define(PROTO, ARRAY, {
     // 22.1.3.10 / 15.4.4.18 Array.prototype.forEach(callbackfn [, thisArg])
-    forEach: function(callbackfn, thisArg /* = undefined */){
-      assertFunction(callbackfn);
-      var self   = ES5Object(this)
-        , length = toLength(self.length)
-        , i      = 0;
-      for(;length > i; i++)i in self && callbackfn.call(thisArg, self[i], i, this);
-    },
+    forEach: forEach = forEach || createArrayMethod(0),
     // 22.1.3.15 / 15.4.4.19 Array.prototype.map(callbackfn [, thisArg])
-    map: function(callbackfn, thisArg /* = undefined */){
-      assertFunction(callbackfn);
-      var result = Array(toLength(this.length));
-      $forEach(this, function(val, key, that){
-        result[key] = callbackfn.call(thisArg, val, key, that);
-      });
-      return result;
-    },
+    map:         createArrayMethod(1),
     // 22.1.3.7 / 15.4.4.20 Array.prototype.filter(callbackfn [, thisArg])
-    filter: function(callbackfn, thisArg /* = undefined */){
-      assertFunction(callbackfn);
-      var result = [];
-      $forEach(this, function(val){
-        callbackfn.apply(thisArg, arguments) && result.push(val);
-      });
-      return result;
-    },
+    filter:      createArrayMethod(2),
+    // 22.1.3.23 / 15.4.4.17 Array.prototype.some(callbackfn [, thisArg])
+    some:        createArrayMethod(3),
+    // 22.1.3.5 / 15.4.4.16 Array.prototype.every(callbackfn [, thisArg])
+    every:       createArrayMethod(4),
     // 22.1.3.18 / 15.4.4.21 Array.prototype.reduce(callbackfn [, initialValue])
-    reduce: function(callbackfn, memo /* = @.0 */){
-      assertFunction(callbackfn);
-      var self   = ES5Object(this)
-        , length = toLength(self.length)
-        , i      = 0;
-      if(2 > arguments.length)for(;;){
-        if(i in self){
-          memo = self[i++];
-          break;
-        }
-        assert(length > ++i, REDUCE_ERROR);
+    reduce:      createArrayReduce(false),
+    // 22.1.3.19 / 15.4.4.22 Array.prototype.reduceRight(callbackfn [, initialValue])
+    reduceRight: createArrayReduce(true),
+    // 22.1.3.11 / 15.4.4.14 Array.prototype.indexOf(searchElement [, fromIndex])
+    indexOf: indexOf = indexOf || function(searchElement, fromIndex /* = 0 */){
+      var O      = ES5Object(this)
+        , length = toLength(O.length)
+        , index  = toInteger(fromIndex);
+      if(index < 0)index = max(length + index, 0);
+      for(;length > index; index++)if(index in O){
+        if(O[index] === searchElement)return index;
       }
-      for(;length > i; i++)if(i in self)memo = callbackfn(memo, self[i], i, this);
-      return memo;
+      return -1;
     },
-    // 22.1.3.19 / 15.4.4.22 Array.prototype.reduceRight(callbackfn [, initialValue])
-    reduceRight: function(callbackfn, memo /* = @[*-1] */){
-      assertFunction(callbackfn);
-      var self = ES5Object(this)
-        , i    = toLength(self.length) - 1;
-      if(2 > arguments.length)for(;;){
-        if(i in self){
-          memo = self[i--];
-          break;
-        }
-        assert(0 <= --i, REDUCE_ERROR);
+    // 22.1.3.14 / 15.4.4.15 Array.prototype.lastIndexOf(searchElement [, fromIndex])
+    lastIndexOf: function(searchElement, fromIndex /* = @[*-1] */){
+      var O      = ES5Object(this)
+        , length = toLength(O.length)
+        , index  = length - 1;
+      if(arguments.length > 1)index = min(index, toInteger(fromIndex));
+      if(index < 0)index = toLength(length + index);
+      for(;index >= 0; index--)if(index in O){
+        if(O[index] === searchElement)return index;
       }
-      for(;i >= 0; i--)if(i in self)memo = callbackfn(memo, self[i], i, this);
-      return memo;
+      return -1;
     }
@@ -261,25 +217,18 @@ });
   // 21.1.3.25 / 15.5.4.20 String.prototype.trim()
-  $define(PROTO, STRING, {trim: function(){
-    return String(this).replace(trimRegExp, '');
-  }});
+  $define(PROTO, STRING, {
+    trim: createEscaper(RegExp('^' + whitespace + '+|' + whitespace + '+$', 'g'), '')
+  });
   
   // 20.3.3.1 / 15.9.4.4 Date.now()
-  $define(STATIC, 'Date', {now: function(){
+  $define(STATIC, DATE, {now: function(){
     return +new Date;
   }});
   
-  if(isFunction(trimRegExp))isFunction = function(it){
-    return _classof(it) == FUNCTION;
+  if(isFunction(/./))isFunction = function(it){
+    return cof(it) == FUNCTION;
   }
-  if(_classof(function(){return arguments}()) == OBJECT)classof =  function(it){
+  if(_classof(function(){return arguments}()) == OBJECT)classof = function(it){
     var cof = _classof(it);
-    return cof != OBJECT || !isFunction(it.callee) ? cof : ARGUMENTS;
+    return cof == OBJECT && isFunction(it.callee) ? ARGUMENTS : cof;
   }
-  
-  create              = Export[OBJECT].create;
-  getPrototypeOf      = Export[OBJECT].getPrototypeOf;
-  keys                = Export[OBJECT].keys;
-  getOwnPropertyNames = Export[OBJECT].getOwnPropertyNames;
-  $indexOf            = Export[ARRAY].indexOf;
-  $forEach            = Export[ARRAY].forEach;
 }();

src/es6_collections.js

@@ -6,4 +6,2 @@ /**
  * Alternatives:
- * https://github.com/paulmillr/es6-shim
- * https://github.com/monolithed/ECMAScript-6
  * https://github.com/Benvie/harmony-collections
@@ -16,96 +14,91 @@ * https://github.com/eriwen/es6-map-shim
 !function(){
-  var STOREID  = symbol('storeid')
-    , KEYS     = symbol('keys')
+  SHIM = symbol('shim');
+  var KEYS     = COLLECTION_KEYS = symbol('keys')
     , VALUES   = symbol('values')
-    , WEAKDATA = symbol('weakdata')
-    , WEAKID   = symbol('weakid')
+    , STOREID  = symbol('storeId')
+    , WEAKDATA = symbol('weakData')
+    , WEAKID   = symbol('weakId')
     , SIZE     = DESCRIPTORS ? symbol('size') : 'size'
-    , uid = 0
-    , wid = 0
-    , tmp = {}
-    , sizeGetter = {size: {get: function(){
+    , uid      = 0
+    , wid      = 0;
+  
+  function getCollection(C, NAME, test, methods, commonMethods, isMap, isWeak){
+    var ADDER_KEY = isMap ? 'set' : 'add'
+      , init      = commonMethods.clear;
+    function initFromIterable(that, iterable){
+      if(iterable != undefined && $for){
+        $for(iterable, isMap).of(that[ADDER_KEY], that);
+      }
+      return that;
+    }
+    if(!test){
+      // create collection constructor
+      C = function(iterable){
+        assertInstance(this, C, NAME);
+        init.call(this);
+        initFromIterable(this, iterable);
+      }
+      set(C, SHIM, true);
+      assign(C[PROTOTYPE], methods, commonMethods);
+      isWeak || defineProperty(C[PROTOTYPE], 'size', {get: function(){
         return this[SIZE];
-      }}};
-  function initCollection(that, iterable, isSet){
-    if(iterable != undefined)forOf && forOf(iterable, isSet ? that.add : that.set, that, !isSet);
-    return that;
-  }
-  function createCollectionConstructor(name, isSet){
-    function F(iterable){
-      assertInstance(this, F, name);
-      this.clear();
-      initCollection(this, iterable, isSet);
+      }});
+    } else {
+      var Native     = C
+        , test_key   = {}
+        , collection = new C([isMap ? [test_key, 1] : test_key])
+        , adder      = collection[ADDER_KEY];
+      // wrap to init collections from iterable
+      if(!(ITERATOR in ArrayProto && collection.has(test_key))){
+        C = function(iterable){
+          assertInstance(this, C, NAME);
+          return initFromIterable(new Native, iterable);
+        }
+        C[PROTOTYPE] = Native[PROTOTYPE];
+      }
+      // fix .add & .set for chaining
+      if(framework && collection[ADDER_KEY](test_key, 1) !== collection){
+        hidden(C[PROTOTYPE], ADDER_KEY, function(a, b){
+          adder.call(this, a, b);
+          return this;
+        });
+      }
     }
-    return F;
+    setToStringTag(C, NAME);
+    var O = {};
+    O[NAME] = C;
+    $define(GLOBAL + WRAP + FORCED * !isNative(C), O);
+    return C;
   }
-  function fixCollection(Base, name, isSet){
-    var collection   = new Base([isSet ? tmp : [tmp, 1]])
-      , initFromIter = collection.has(tmp)
-      , key = isSet ? 'add' : 'set'
-      , fn;
-    // fix .add & .set for chaining
-    if(framework && collection[key](tmp, 1) !== collection){
-      fn = collection[key];
-      hidden(Base[PROTOTYPE], key, function(){
-        fn.apply(this, arguments);
-        return this;
-      });
-    }
-    if(initFromIter)return wrapGlobalConstructor(Base);
-    // wrap to init collections from iterable
-    function F(iterable){
-      assertInstance(this, F, name);
-      return initCollection(new Base, iterable, isSet);
-    }
-    F[PROTOTYPE] = Base[PROTOTYPE];
-    return F;
-  }
   
   function fastKey(it, create){
-    return isObject(it)
-      ? 'O' + (has(it, STOREID)
-        ? it[STOREID]
-        : create ? defineProperty(it, STOREID, {value: uid++})[STOREID] : '')
-      : (typeof it == 'string' ? 'S' : 'P') + it;
-  }
-  function createForEach(key){
-    return function(callbackfn, thisArg /* = undefined */){
-      assertFunction(callbackfn);
-      var values = this[VALUES]
-        , keyz   = this[key]
-        , names  = keys(keyz)
-        , length = names.length
-        , i = 0
-        , index;
-      while(length > i){
-        index = names[i++];
-        callbackfn.call(thisArg, values[index], keyz[index], this);
-      }
+    // return it with 'S' prefix if it's string or with 'P' prefix for over primitives
+    if(!isObject(it))return (typeof it == 'string' ? 'S' : 'P') + it;
+    // if it hasn't object id - add next
+    if(!has(it, STOREID)){
+      if(create)set(it, STOREID, ++uid);
+      else return '';
     }
+    // return object id with 'O' prefix
+    return 'O' + it[STOREID];
   }
-  function collectionHas(key){
-    return fastKey(key) in this[VALUES];
-  }
-  function clearSet(){
-    hidden(this, VALUES, create(null));
-    hidden(this, SIZE, 0);
-  }
-  
-  // 23.1 Map Objects
-  if(!isFunction(Map) || !has(Map[PROTOTYPE], 'forEach')){
-    Map = createCollectionConstructor(MAP);
-    assign(Map[PROTOTYPE], {
+
+  function collectionMethods($VALUES){
+    return {
       // 23.1.3.1 Map.prototype.clear()
+      // 23.2.3.2 Set.prototype.clear()
       clear: function(){
-        hidden(this, KEYS, create(null));
-        clearSet.call(this);
+        set(this, KEYS, create(null));
+        if($VALUES == VALUES)set(this, VALUES, create(null));
+        set(this, SIZE, 0);
       },
       // 23.1.3.3 Map.prototype.delete(key)
+      // 23.2.3.4 Set.prototype.delete(value)
       'delete': function(key){
         var index    = fastKey(key)
-          , values   = this[VALUES]
-          , contains = index in values;
+          , keys     = this[KEYS]
+          , contains = index in keys;
         if(contains){
-          delete this[KEYS][index];
-          delete values[index];
+          delete keys[index];
+          if($VALUES == VALUES)delete this[VALUES][index];
           this[SIZE]--;
@@ -115,65 +108,65 @@ }
       },
+      // 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined)
       // 23.1.3.5 Map.prototype.forEach(callbackfn, thisArg = undefined)
-      forEach: createForEach(KEYS),
-      // 23.1.3.6 Map.prototype.get(key)
-      get: function(key){
-        return this[VALUES][fastKey(key)];
+      forEach: function(callbackfn, thisArg /* = undefined */){
+        var f      = ctx(callbackfn, thisArg, 3)
+          , values = this[$VALUES]
+          , keys   = this[KEYS]
+          , names  = getKeys(keys)
+          , length = names.length
+          , i = 0
+          , index;
+        while(length > i){
+          index = names[i++];
+          f(values[index], keys[index], this);
+        }
       },
       // 23.1.3.7 Map.prototype.has(key)
-      has: collectionHas,
-      // 23.1.3.9 Map.prototype.set(key, value)
-      set: function(key, value){
-        var index  = fastKey(key, 1)
-          , values = this[VALUES];
-        if(!(index in values)){
-          this[KEYS][index] = key;
-          this[SIZE]++;
-        }
-        values[index] = value;
-        return this;
+      // 23.2.3.7 Set.prototype.has(value)
+      has: function(key){
+        return fastKey(key) in this[KEYS];
       }
-    });
-    // 23.1.3.10 get Map.prototype.size
-    defineProperties(Map[PROTOTYPE], sizeGetter);
-  } else Map = fixCollection(Map, MAP);
+    }
+  }
   
+  // 23.1 Map Objects
+  Map = getCollection(Map, MAP, isNative(Map) && has(Map[PROTOTYPE], FOR_EACH), {
+    // 23.1.3.6 Map.prototype.get(key)
+    get: function(key){
+      return this[VALUES][fastKey(key)];
+    },
+    // 23.1.3.9 Map.prototype.set(key, value)
+    set: function(key, value){
+      var index  = fastKey(key, true)
+        , values = this[VALUES];
+      if(!(index in values)){
+        this[KEYS][index] = key;
+        this[SIZE]++;
+      }
+      values[index] = value;
+      return this;
+    }
+  }, collectionMethods(VALUES), true);
+  
   // 23.2 Set Objects
-  if(!isFunction(Set) || !has(Set[PROTOTYPE], 'forEach')){
-    Set = createCollectionConstructor(SET, 1);
-    assign(Set[PROTOTYPE], {
-      // 23.2.3.1 Set.prototype.add(value)
-      add: function(value){
-        var index  = fastKey(value, 1)
-          , values = this[VALUES];
-        if(!(index in values)){
-          values[index] = value;
-          this[SIZE]++;
-        }
-        return this;
-      },
-      // 23.2.3.2 Set.prototype.clear()
-      clear: clearSet,
-      // 23.2.3.4 Set.prototype.delete(value)
-      'delete': function(value){
-        var index    = fastKey(value)
-          , values   = this[VALUES]
-          , contains = index in values;
-        if(contains){
-          delete values[index];
-          this[SIZE]--;
-        }
-        return contains;
-      },
-      // 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined)
-      forEach: createForEach(VALUES),
-      // 23.2.3.7 Set.prototype.has(value)
-      has: collectionHas
-    });
-    // 23.2.3.9 get Set.prototype.size
-    defineProperties(Set[PROTOTYPE], sizeGetter);
-  } else Set = fixCollection(Set, SET, 1);
+  Set = getCollection(Set, SET, isNative(Set) && has(Set[PROTOTYPE], FOR_EACH), {
+    // 23.2.3.1 Set.prototype.add(value)
+    add: function(value){
+      var index  = fastKey(value, true)
+        , values = this[KEYS];
+      if(!(index in values)){
+        values[index] = value;
+        this[SIZE]++;
+      }
+      return this;
+    }
+  }, collectionMethods(KEYS));
   
   function getWeakData(it){
-    return (has(it, WEAKDATA) ? it : defineProperty(it, WEAKDATA, {value: {}}))[WEAKDATA];
+    has(it, WEAKDATA) || set(it, WEAKDATA, {});
+    return it[WEAKDATA];
   }
+  function weakCollectionHas(key){
+    return isObject(key) && has(key, WEAKDATA) && has(key[WEAKDATA], this[WEAKID]);
+  }
   var weakCollectionMethods = {
@@ -183,3 +176,3 @@ // 23.3.3.1 WeakMap.prototype.clear()
     clear: function(){
-      hidden(this, WEAKID, wid++);
+      set(this, WEAKID, wid++);
     },
@@ -189,52 +182,30 @@ // 23.3.3.3 WeakMap.prototype.delete(key)
     'delete': function(key){
-      return this.has(key) && delete key[WEAKDATA][this[WEAKID]];
+      return weakCollectionHas.call(this, key) && delete key[WEAKDATA][this[WEAKID]];
     },
     // 23.3.3.5 WeakMap.prototype.has(key)
     // 23.4.3.5 WeakSet.prototype.has(value)
-    has: function(key){
-      return isObject(key) && has(key, WEAKDATA) && has(key[WEAKDATA], this[WEAKID]);
-    }
+    has: weakCollectionHas
   };
   
   // 23.3 WeakMap Objects
-  if(!isFunction(WeakMap) || !has(WeakMap[PROTOTYPE], 'clear')){
-    WeakMap = createCollectionConstructor(WEAKMAP);
-    assign(WeakMap[PROTOTYPE], assign({
-      // 23.3.3.4 WeakMap.prototype.get(key)
-      get: function(key){
-        return isObject(key) && has(key, WEAKDATA) ? key[WEAKDATA][this[WEAKID]] : undefined;
-      },
-      // 23.3.3.6 WeakMap.prototype.set(key, value)
-      set: function(key, value){
-        assertObject(key);
-        getWeakData(key)[this[WEAKID]] = value;
-        return this;
-      }
-    }, weakCollectionMethods));
-  } else WeakMap = fixCollection(WeakMap, WEAKMAP);
+  WeakMap = getCollection(WeakMap, WEAKMAP, isNative(WeakMap) && has(WeakMap[PROTOTYPE], 'clear'), {
+    // 23.3.3.4 WeakMap.prototype.get(key)
+    get: function(key){
+      if(isObject(key) && has(key, WEAKDATA))return key[WEAKDATA][this[WEAKID]];
+    },
+    // 23.3.3.6 WeakMap.prototype.set(key, value)
+    set: function(key, value){
+      getWeakData(assertObject(key))[this[WEAKID]] = value;
+      return this;
+    }
+  }, weakCollectionMethods, true, true);
   
   // 23.4 WeakSet Objects
-  if(!isFunction(WeakSet)){
-    WeakSet = createCollectionConstructor(WEAKSET, 1);
-    assign(WeakSet[PROTOTYPE], assign({
-      // 23.4.3.1 WeakSet.prototype.add(value)
-      add: function(value){
-        assertObject(value);
-        getWeakData(value)[this[WEAKID]] = true;
-        return this;
-      }
-    }, weakCollectionMethods));
-  } else WeakSet = fixCollection(WeakSet, WEAKSET, 1);
-  
-  setTag(Map, MAP);
-  setTag(Set, SET);
-  setTag(WeakMap, WEAKMAP);
-  setTag(WeakSet, WEAKSET);
-    
-  $define(GLOBAL, {
-    Map: Map,
-    Set: Set,
-    WeakMap: WeakMap,
-    WeakSet: WeakSet
-  }, 1);
+  WeakSet = getCollection(WeakSet, WEAKSET, isNative(WeakSet), {
+    // 23.4.3.1 WeakSet.prototype.add(value)
+    add: function(value){
+      getWeakData(assertObject(value))[this[WEAKID]] = true;
+      return this;
+    }
+  }, weakCollectionMethods, false, true);
 }();

src/es6_iterators.js

@@ -1,186 +0,172 @@
-!function($ITERATOR, KEY, VALUE, ITERATED, KIND, INDEX, KEYS, returnThis){
-  function createIterResultObject(value, done){
+!function($$ITERATOR){
+  var FFITERATOR = $$ITERATOR in ArrayProto
+    , KEY        = 1
+    , VALUE      = 2
+    , ITERATED   = symbol('iterated')
+    , KIND       = symbol('kind')
+    , INDEX      = symbol('index')
+    , KEYS       = symbol('keys')
+    , ENTRIES    = symbol('entries')
+    , getValues  = createObjectToArray(false)
+    , Iterators  = {};
+  
+  function createIterResultObject(done, value){
     return {value: value, done: !!done};
   }
-  function createIteratorFactory(constructor, kind){
+  function createIteratorClass(Constructor, NAME, Base, next, DEFAULT){
+    Constructor[PROTOTYPE] = {};
+    // 22.1.5.2.1 %ArrayIteratorPrototype%.next()
+    // 23.1.5.2.1 %MapIteratorPrototype%.next()
+    // 23.2.5.2.1 %SetIteratorPrototype%.next()
+    hidden(Constructor[PROTOTYPE], 'next', next);
+    // 22.1.5.2.2 %ArrayIteratorPrototype%[@@iterator]()
+    // 23.1.5.2.2 %MapIteratorPrototype%[@@iterator]()
+    // 23.2.5.2.2 %SetIteratorPrototype%[@@iterator]()
+    hidden(Constructor[PROTOTYPE], ITERATOR, returnThis);
+    // Add iterator for FF iterator protocol
+    FFITERATOR && hidden(Constructor[PROTOTYPE], $$ITERATOR, returnThis);
+    // 22.1.5.2.3 %ArrayIteratorPrototype%[@@toStringTag]
+    // 23.1.5.2.3 %MapIteratorPrototype%[@@toStringTag]
+    // 23.2.5.2.3 %SetIteratorPrototype%[@@toStringTag]
+    setToStringTag(Constructor, NAME + ' Iterator');
+    $define(PROTO, NAME, {
+      // 22.1.3.4 Array.prototype.entries()
+      // 23.1.3.4 Map.prototype.entries()
+      // 23.2.3.5 Set.prototype.entries()
+      entries: createIteratorFactory(Constructor, KEY+VALUE),
+      // 22.1.3.13 Array.prototype.keys()
+      // 23.1.3.8 Map.prototype.keys()
+      // 23.2.3.8 Set.prototype.keys()
+      keys:    createIteratorFactory(Constructor, KEY),
+      // 22.1.3.29 Array.prototype.values()
+      // 23.1.3.11 Map.prototype.values()
+      // 23.2.3.10 Set.prototype.values()
+      values:  createIteratorFactory(Constructor, VALUE)
+    });
+    // 22.1.3.30 Array.prototype[@@iterator]()
+    // 23.1.3.12 Map.prototype[@@iterator]()
+    // 23.2.3.11 Set.prototype[@@iterator]()
+    Base && defineIterator(Base, NAME, createIteratorFactory(Constructor, DEFAULT));
+  }
+  function createIteratorFactory(Constructor, kind){
     return function(){
-      return new constructor(this, kind);
+      return new Constructor(this, kind);
     }
   }
+  function defineIterator(Constructor, NAME, value){
+    var proto         = Constructor[PROTOTYPE]
+      , has$$ITERATOR = has(proto, $$ITERATOR);
+    var iter = has(proto, ITERATOR)
+      ? proto[ITERATOR]
+      : has$$ITERATOR
+        ? proto[$$ITERATOR]
+        : value;
+    if(framework){
+      // Define iterator
+      !has(proto, ITERATOR) && hidden(proto, ITERATOR, iter);
+      // FF fix
+      if(has$$ITERATOR)hidden(getPrototypeOf(iter.call(new Constructor)), ITERATOR, returnThis);
+      // Add iterator for FF iterator protocol
+      else FFITERATOR && hidden(proto, $$ITERATOR, iter);
+    }
+    // Plug for library
+    Iterators[NAME] = iter;
+    // FF & v8 fix
+    Iterators[NAME + ' Iterator'] = returnThis;
+  }
   
+  // 22.1.5.1 CreateArrayIterator Abstract Operation
   function ArrayIterator(iterated, kind){
-    this[ITERATED] = ES5Object(iterated);
-    this[KIND]     = kind;
-    this[INDEX]    = 0;
+    set(this, ITERATED, ES5Object(iterated));
+    set(this, KIND,     kind);
+    set(this, INDEX,    0);
   }
-  ArrayIterator[PROTOTYPE] = {
-    next: function(){
-      var that     = this
-        , iterated = that[ITERATED]
-        , index    = that[INDEX]++;
-      if(index >= iterated.length)return createIterResultObject(undefined, 1);
-      switch(that[KIND]){
-        case KEY   : return createIterResultObject(index, 0);
-        case VALUE : return createIterResultObject(iterated[index], 0);
-      }
-      return createIterResultObject([index, iterated[index]], 0);
-    }
-  };
+  // 22.1.5.2.1 %ArrayIteratorPrototype%.next()
+  createIteratorClass(ArrayIterator, ARRAY, Array, function(){
+    var iterated = this[ITERATED]
+      , index    = this[INDEX]++
+      , kind     = this[KIND]
+      , value;
+    if(index >= iterated.length)return createIterResultObject(1);
+    if(kind == KEY)       value = index;
+    else if(kind == VALUE)value = iterated[index];
+    else                  value = [index, iterated[index]];
+    return createIterResultObject(0, value);
+  }, VALUE);
   
+  // 21.1.3.27 String.prototype[@@iterator]() - SHAM, TODO
+  defineIterator(String, STRING, Iterators[ARRAY]);
+  // argumentsList[@@iterator] is %ArrayProto_values% (9.4.4.6, 9.4.4.7)
+  Iterators[ARGUMENTS] = Iterators[ARRAY];
+  
+  // 23.1.5.1 CreateMapIterator Abstract Operation
   function MapIterator(iterated, kind){
-    this[ITERATED] = iterated;
-    this[KIND]     = kind;
-    this[INDEX]    = 0;
-    iterated.forEach(function(val, key){
+    var that = this, keys;
+    if(Map[SHIM])keys = getValues(iterated[COLLECTION_KEYS]);
+    else Map[PROTOTYPE][FOR_EACH].call(iterated, function(val, key){
       this.push(key);
-    }, this[KEYS] = []);
+    }, keys = []);
+    set(that, ITERATED, iterated);
+    set(that, KIND,     kind);
+    set(that, INDEX,    0);
+    set(that, KEYS,     keys);
   }
-  MapIterator[PROTOTYPE] = {
-    next: function(){
-      var iterated = this[ITERATED]
-        , keys     = this[KEYS]
-        , index    = this[INDEX]++
-        , key;
-      if(index >= keys.length)return createIterResultObject(undefined, 1);
-      key = keys[index];
-      switch(this[KIND]){
-        case KEY   : return createIterResultObject(key, 0);
-        case VALUE : return createIterResultObject(iterated.get(key), 0);
-      }
-      return createIterResultObject([key, iterated.get(key)], 0);
-    }
-  };
+  // 23.1.5.2.1 %MapIteratorPrototype%.next()
+  createIteratorClass(MapIterator, MAP, Map, function(){
+    var that     = this
+      , iterated = that[ITERATED]
+      , keys     = that[KEYS]
+      , index    = that[INDEX]++
+      , kind     = that[KIND]
+      , key, value;
+    if(index >= keys.length)return createIterResultObject(1);
+    key = keys[index];
+    if(kind == KEY)       value = key;
+    else if(kind == VALUE)value = iterated.get(key);
+    else                  value = [key, iterated.get(key)];
+    return createIterResultObject(0, value);
+  }, KEY+VALUE);
   
+  // 23.2.5.1 CreateSetIterator Abstract Operation
   function SetIterator(iterated, kind){
-    this[KIND]  = kind;
-    this[INDEX] = 0;
-    iterated.forEach(function(val){
+    var keys;
+    if(Set[SHIM])keys = getValues(iterated[COLLECTION_KEYS]);
+    else Set[PROTOTYPE][FOR_EACH].call(iterated, function(val){
       this.push(val);
-    }, this[KEYS] = []);
+    }, keys = []);
+    set(this, KIND, kind);
+    set(this, KEYS, keys.reverse());
   }
-  SetIterator[PROTOTYPE] = {
-    next: function(){
-      var keys  = this[KEYS]
-        , index = this[INDEX]++
-        , key;
-      if(index >= keys.length)return createIterResultObject(undefined, 1);
-      key = keys[index];
-      if(this[KIND] == VALUE)return createIterResultObject(key, 0);
-      return createIterResultObject([key, key], 0);
-    }
-  };
+  // 23.2.5.2.1 %SetIteratorPrototype%.next()
+  createIteratorClass(SetIterator, SET, Set, function(){
+    var keys = this[KEYS]
+      , key;
+    if(!keys.length)return createIterResultObject(1);
+    key = keys.pop();
+    return createIterResultObject(0, this[KIND] == KEY+VALUE ? [key, key] : key);
+  }, VALUE);
   
-  function ObjectIterator(iterated, kind){
-    this[ITERATED] = iterated;
-    this[KEYS]     = keys(iterated);
-    this[INDEX]    = 0;
-    this[KIND]     = kind;
+  $for = function(iterable, entries){
+    if(!(this instanceof $for))return new $for(iterable, entries);
+    set(this, ITERATED, iterable);
+    set(this, ENTRIES,  entries);
   }
-  ObjectIterator[PROTOTYPE] = {
-    next: function(){
-      var index  = this[INDEX]++
-        , object = this[ITERATED]
-        , keys   = this[KEYS]
-        , key;
-      if(index >= keys.length)return createIterResultObject(undefined, 1);
-      key = keys[index];
-      switch(this[KIND]){
-        case KEY   : return createIterResultObject(key, 0);
-        case VALUE : return createIterResultObject(object[key], 0);
-      }
-      return createIterResultObject([key, object[key]], 0);
-    }
-  }
-  
-  setTag(ArrayIterator, ARRAY + $ITERATOR);
-  setTag(MapIterator, MAP + $ITERATOR);
-  setTag(SetIterator, SET + $ITERATOR);
-  setTag(ObjectIterator, OBJECT + $ITERATOR);
-  
-  ArrayIterator[PROTOTYPE][ITERATOR] = MapIterator[PROTOTYPE][ITERATOR] =
-    SetIterator[PROTOTYPE][ITERATOR] = ObjectIterator[PROTOTYPE][ITERATOR] = returnThis;
-  
-  function defineIterator(object, value){
-    has(object, ITERATOR) || (object[ITERATOR] = value);
-  }
-  
-  isIterable = function(it){
-    if(it != undefined && isFunction(it[ITERATOR]))return true;
-    // plug for library. TODO: correct proto check
-    switch(it && it.constructor){
-      case String: case Array: case Map: case Set: return true;
-      case Object: return classof(it) == ARGUMENTS;
-    } return false;
-  }
-  getIterator = function(it){
-    if(it != undefined && isFunction(it[ITERATOR]))return it[ITERATOR]();
-    // plug for library. TODO: correct proto check
-    switch(it && it.constructor){
-      case Object : if(classof(it) != ARGUMENTS)break;
-      case String :
-      case Array  : return new ArrayIterator(it, VALUE);
-      case Map    : return new MapIterator(it, KEY+VALUE);
-      case Set    : return new SetIterator(it, VALUE);
-    } throw TypeError(it + ' is not iterable!');
-  }
-  forOf = function(it, fn, that, entries){
-    var iterator = getIterator(it), step, value;
+  $for[PROTOTYPE].of = function(fn, that){
+    var iterator = getIterator(this[ITERATED])
+      , entries  = this[ENTRIES]
+      , f        = ctx(fn, that, entries ? 2 : 1)
+      , step;
     while(!(step = iterator.next()).done){
-      if((entries ? fn.apply(that, ES5Object(step.value)) : fn.call(that, step.value)) === false)return;
+      if((entries ? invoke(f, step.value) : f(step.value)) === false)return;
     }
   }
   
-  // v8 & FF fix
-  isFunction($Array.keys) && defineIterator(getPrototypeOf([].keys()), returnThis);
-  //isFunction(Set[PROTOTYPE].keys) && defineIterator(getPrototypeOf(new Set().keys()), returnThis);
-  //isFunction(Map[PROTOTYPE].keys) && defineIterator(getPrototypeOf(new Map().keys()), returnThis);
-  
-  $define(PROTO, ARRAY, {
-    // 22.1.3.4 Array.prototype.entries()
-    entries: createIteratorFactory(ArrayIterator, KEY+VALUE),
-    // 22.1.3.13 Array.prototype.keys()
-    keys:    createIteratorFactory(ArrayIterator, KEY),
-    // 22.1.3.29 Array.prototype.values()
-    values:  createIteratorFactory(ArrayIterator, VALUE)
-  });
-  $define(PROTO, MAP, {
-    // 23.1.3.4 Map.prototype.entries()
-    entries: createIteratorFactory(MapIterator, KEY+VALUE),
-    // 23.1.3.8 Map.prototype.keys()
-    keys:    createIteratorFactory(MapIterator, KEY),
-    // 23.1.3.11 Map.prototype.values()
-    values:  createIteratorFactory(MapIterator, VALUE)
-  });
-  $define(PROTO, SET, {
-    // 23.2.3.5 Set.prototype.entries()
-    entries: createIteratorFactory(SetIterator, KEY+VALUE),
-    // 23.2.3.8 Set.prototype.keys()
-    keys:    createIteratorFactory(SetIterator, VALUE),
-    // 23.2.3.10 Set.prototype.values()
-    values:  createIteratorFactory(SetIterator, VALUE)
-  });
-  
-  if(framework){
-    // 21.1.3.27 String.prototype[@@iterator]()
-    defineIterator(String[PROTOTYPE], createIteratorFactory(ArrayIterator, VALUE));
-    // 22.1.3.30 Array.prototype[@@iterator]()
-    defineIterator($Array, $Array.values);
-    // 23.1.3.12 Map.prototype[@@iterator]()
-    defineIterator(Map[PROTOTYPE], createIteratorFactory(MapIterator, KEY+VALUE));
-    // 23.2.3.11 Set.prototype[@@iterator]()
-    defineIterator(Set[PROTOTYPE], createIteratorFactory(SetIterator, VALUE));
+  $for.isIterable = isIterable = function(it){
+    return (it != undefined && ITERATOR in it) || has(Iterators, classof(it));
   }
-  
-  function createObjectIteratorFactory(kind){
-    return function(it){
-      return new ObjectIterator(it, kind);
-    }
+  $for.getIterator = getIterator = function(it){
+    return assertObject((it[ITERATOR] || Iterators[classof(it)]).call(it));
   }
-  objectIterators = {
-    keys:    createObjectIteratorFactory(KEY),
-    values:  createObjectIteratorFactory(VALUE),
-    entries: createObjectIteratorFactory(KEY+VALUE)
-  }
   
-  $define(GLOBAL, {forOf: forOf});
-}(' Iterator', 1, 2, symbol('iterated'), symbol('kind'), symbol('index'), symbol('keys'), Function('return this'));
+  $define(GLOBAL, {$for: $for});
+}('@@iterator');

src/es6_promise.js

@@ -5,59 +5,107 @@ /**
  * https://github.com/domenic/promises-unwrapping
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
- * http://caniuse.com/promises
- * Based on:
- * https://github.com/jakearchibald/ES6-Promises
- * Alternatives:
- * https://github.com/paulmillr/es6-shim
+ * Based on https://github.com/getify/native-promise-only/
  */
-!function(Promise, $Promise){
-  isFunction(Promise)
-  && isFunction(Promise.resolve) && isFunction(Promise.reject) && isFunction(Promise.all) && isFunction(Promise.race)
-  && (function(promise){
-    return Promise.resolve(promise) === promise;
-  })(new Promise(Function()))
-  || !function(SUBSCRIBERS, STATE, DETAIL, SEALED, FULFILLED, REJECTED, PENDING){
-    // microtask or, if not possible, macrotask
-    var asap =
-      isNode ? process.nextTick :
-      Promise && isFunction(Promise.resolve) ? function(fn){ $Promise.resolve().then(fn); } :
-      setImmediate;
-    // 25.4.3 The Promise Constructor
+!function(Promise){
+  isFunction(Promise) && isFunction(Promise.resolve)
+  && function(promise){
+    return Promise.resolve(promise) == promise;
+  }(new Promise(Function()))
+  || !function(asap, DEF){
+    function isThenable(o){
+      var then;
+      if(isObject(o))then = o.then;
+      return isFunction(then) ? then : false;
+    }
+    function notify(def){
+      var chain = def.chain;
+      chain.length && asap(function(){
+        var msg = def.msg
+          , ok  = def.state == 1
+          , i   = 0;
+        while(chain.length > i)!function(react){
+          var cb = ok ? react.ok : react.fail
+            , ret, then;
+          try {
+            if(cb){
+              ret = cb === true ? msg : cb(msg);
+              if(ret === react.P){
+                react.rej(TypeError(PROMISE + '-chain cycle'));
+              } else if(then = isThenable(ret)){
+                then.call(ret, react.res, react.rej);
+              } else react.res(ret);
+            } else react.rej(msg);
+          } catch(err){
+            react.rej(err);
+          }
+        }(chain[i++]);
+        chain.length = 0;
+      });
+    }
+    function resolve(msg){
+      var def = this
+        , then, wrapper;
+      if(def.done)return;
+      def.done = true;
+      def = def.def || def; // unwrap
+      try {
+        if(then = isThenable(msg)){
+          wrapper = {def: def, done : false}; // wrap
+          then.call(msg, ctx(resolve, wrapper, 1), ctx(reject, wrapper, 1));
+        } else {
+          def.msg = msg;
+          def.state = 1;
+          notify(def);
+        }
+      } catch(err){
+        reject.call(wrapper || {def: def, done : false}, err); // wrap
+      }
+    }
+    function reject(msg){
+      var def = this;
+      if(def.done)return;
+      def.done = true;
+      def = def.def || def; // unwrap
+      def.msg = msg;
+      def.state = 2;
+      notify(def);
+    }
+    // 25.4.3.1 Promise(executor)
     Promise = function(executor){
-      var promise       = this
-        , rejectPromise = part.call(handle, promise, REJECTED);
-      assertInstance(promise, Promise, PROMISE);
       assertFunction(executor);
-      promise[SUBSCRIBERS] = [];
+      assertInstance(this, Promise, PROMISE);
+      var def = {chain: [], state: 0, done : false, msg: undefined};
+      set(this, DEF, def);
       try {
-        executor(part.call(resolve, promise), rejectPromise);
-      } catch(e){
-        rejectPromise(e);
+        executor(ctx(resolve, def, 1), ctx(reject, def, 1));
+      } catch(err){
+        reject.call(def, err);
       }
     }
+    // 25.4.5.3 Promise.prototype.then(onFulfilled, onRejected)
+    hidden(Promise[PROTOTYPE], 'then', function(onFulfilled, onRejected){
+      var react = {
+        ok:   isFunction(onFulfilled) ? onFulfilled : true,
+        fail: isFunction(onRejected)  ? onRejected  : false
+      } , P = react.P = new this[CONSTRUCTOR](function(resolve, reject){
+        react.res = assertFunction(resolve);
+        react.rej = assertFunction(reject);
+      }), def = this[DEF];
+      def.chain.push(react);
+      def.state && notify(def);
+      return P;
+    });
     // 25.4.5.1 Promise.prototype.catch(onRejected)
-    Promise[PROTOTYPE]['catch'] = function(onRejected){
+    hidden(Promise[PROTOTYPE], 'catch', function(onRejected){
       return this.then(undefined, onRejected);
-    },
-    // 25.4.5.3 Promise.prototype.then(onFulfilled, onRejected)
-    Promise[PROTOTYPE].then = function(onFulfilled, onRejected){
-      var promise     = this
-        , thenPromise = new Promise(Function())
-        , args        = [onFulfilled, onRejected]; 
-      if(promise[STATE])asap(function(){
-        invokeCallback(promise[STATE], thenPromise, args[promise[STATE] - 1], promise[DETAIL]);
-      });
-      else promise[SUBSCRIBERS].push(thenPromise, onFulfilled, onRejected);
-      return thenPromise;
-    }
+    });
     // 25.4.4.1 Promise.all(iterable)
-    Promise.all = function(iterable){
-      var C      = this
-        , values = [];
-      return new C(function(resolve, reject){
-        forOf(iterable, push, values);
+    hidden(Promise, 'all', function(iterable){
+      var Promise = this
+        , values  = [];
+      return new Promise(function(resolve, reject){
+        $for(iterable).of(push, values);
         var remaining = values.length
           , results   = Array(remaining);
-        if(remaining)$forEach(values, function(promise, index){
-          C.resolve(promise).then(function(value){
+        if(remaining)forEach.call(values, function(promise, index){
+          Promise.resolve(promise).then(function(value){
             results[index] = value;
@@ -69,86 +117,27 @@ --remaining || resolve(results);
       });
-    }
+    });
     // 25.4.4.4 Promise.race(iterable)
-    Promise.race = function(iterable){
-      var C = this;
-      return new C(function(resolve, reject){
-        forOf(iterable, function(promise){
-          C.resolve(promise).then(resolve, reject)
+    hidden(Promise, 'race', function(iterable){
+      var Promise = this;
+      return new Promise(function(resolve, reject){
+        $for(iterable).of(function(promise){
+          Promise.resolve(promise).then(resolve, reject);
         });
       });
-    }
+    });
     // 25.4.4.5 Promise.reject(r)
-    Promise.reject = function(r){
+    hidden(Promise, 'reject', function(r){
       return new this(function(resolve, reject){
         reject(r);
       });
-    }
+    });
     // 25.4.4.6 Promise.resolve(x)
-    Promise.resolve = function(x){
+    hidden(Promise, 'resolve', function(x){
       return isObject(x) && getPrototypeOf(x) === this[PROTOTYPE] ? x : new this(function(resolve, reject){
         resolve(x);
       });
-    }
-    function invokeCallback(settled, promise, callback, detail){
-      var hasCallback = isFunction(callback)
-        , value, succeeded, failed;
-      if(hasCallback){
-        try {
-          value     = callback(detail);
-          succeeded = 1;
-        } catch(e){
-          failed = 1;
-          value  = e;
-        }
-      } else {
-        value = detail;
-        succeeded = 1;
-      }
-      if(handleThenable(promise, value))return;
-      else if(hasCallback && succeeded)resolve(promise, value);
-      else if(failed)handle(promise, REJECTED, value);
-      else if(settled == FULFILLED)resolve(promise, value);
-      else if(settled == REJECTED)handle(promise, REJECTED, value);
-    }
-    function handleThenable(promise, value){
-      var resolved;
-      try {
-        assert(promise !== value, "A promises callback can't return that same promise.");
-        if(value && isFunction(value.then)){
-          value.then(function(val){
-            if(resolved)return true;
-            resolved = true;
-            if(value !== val)resolve(promise, val);
-            else handle(promise, FULFILLED, val);
-          }, function(val){
-            if(resolved)return true;
-            resolved = true;
-            handle(promise, REJECTED, val);
-          });
-          return 1;
-        }
-      } catch(error){
-        if(!resolved)handle(promise, REJECTED, error);
-        return 1;
-      }
-    }
-    function resolve(promise, value){
-      if(promise === value || !handleThenable(promise, value))handle(promise, FULFILLED, value);
-    }
-    function handle(promise, state, reason){
-      if(promise[STATE] === PENDING){
-        promise[STATE]  = SEALED;
-        promise[DETAIL] = reason;
-        asap(function(){
-          promise[STATE] = state;
-          for(var subscribers = promise[SUBSCRIBERS], i = 0; i < subscribers.length; i += 3){
-            invokeCallback(state, subscribers[i], subscribers[i + state], promise[DETAIL]);
-          }
-          promise[SUBSCRIBERS] = undefined;
-        });
-      }
-    }
-  }(symbol('subscribers'), symbol('state'), symbol('detail'), 0, 1, 2);
-  setTag(Promise, PROMISE)
-  $define(GLOBAL, {Promise: Promise}, 1);
-}(Promise, Promise);
+    });
+  }(nextTick || setImmediate, symbol('def'));
+  setToStringTag(Promise, PROMISE);
+  $define(GLOBAL + FORCED * !isNative(Promise), {Promise: Promise});
+}(global[PROMISE]);

src/es6_symbol.js

 /**
  * ECMAScript 6 Symbol
+ * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol
  * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-symbol-objects
- * Alternatives:
- * http://webreflection.blogspot.com.au/2013/03/simulating-es6-symbols-in-es5.html
- * https://github.com/seanmonstar/symbol
  */
-!function(Symbol, SYMBOL, TAG, SymbolRegistry, FFITERATOR){
-  // 19.4.1 The Symbol Constructor
+!function(TAG, $ITERATOR, $TOSTRINGTAG, SymbolRegistry){
+  // 19.4.1.1 Symbol([description])
   if(!isNative(Symbol)){
     Symbol = function(description){
-      if(!(this instanceof Symbol))return new Symbol(description);
-      var tag = symbol(description);
-      defineProperty($Object, tag, {
+      assert(!(this instanceof Symbol), SYMBOL + ' is not a ' + CONSTRUCTOR);
+      var tag = uid(description);
+      defineProperty(ObjectProto, tag, {
+        configurable: true,
         set: function(value){
@@ -19,24 +18,30 @@ hidden(this, tag, value);
       });
-      hidden(this, TAG, tag);
+      return hidden(create(Symbol[PROTOTYPE]), TAG, tag);
     }
-    Symbol[PROTOTYPE].toString = Symbol[PROTOTYPE].valueOf = function(){
+    hidden(Symbol[PROTOTYPE], TO_STRING, function(){
       return this[TAG];
-    }
+    });
   }
-  $define(GLOBAL, {Symbol: wrapGlobalConstructor(Symbol)}, 1);
+  ITERATOR = $ITERATOR in Symbol
+    ? Symbol[$ITERATOR]
+    : uid(SYMBOL + '.' + $ITERATOR);
+  TOSTRINGTAG = $TOSTRINGTAG in Symbol
+    ? Symbol[$TOSTRINGTAG]
+    : Symbol(SYMBOL + '.' + $TOSTRINGTAG);
+  $define(GLOBAL + WRAP, {Symbol: Symbol});
   $define(STATIC, SYMBOL, {
     // 19.4.2.2 Symbol.for(key)
     'for': function(key){
-      return has(SymbolRegistry, key) ? SymbolRegistry[key] : SymbolRegistry[key] = Symbol(key);
+      return has(SymbolRegistry, key += '') ? SymbolRegistry[key] : SymbolRegistry[key] = Symbol(key);
     },
     // 19.4.2.6 Symbol.iterator
-    iterator: ITERATOR = Symbol.iterator || FFITERATOR in $Array ? FFITERATOR : Symbol(SYMBOL + '.iterator'),
+    iterator: ITERATOR,
     // 19.4.2.7 Symbol.keyFor(sym)
-    keyFor: function(sym){
-      for(var key in SymbolRegistry)if(SymbolRegistry[key] === sym)return key;
-    },
+    keyFor: part.call(keyOf, SymbolRegistry),
     // 19.4.2.10 Symbol.toStringTag
-    toStringTag: TOSTRINGTAG = Symbol.toStringTag || Symbol(SYMBOL + '.toStringTag')
+    toStringTag: TOSTRINGTAG,
+    pure: symbol,
+    set: set
   });
-  setTag(Symbol, SYMBOL);
-}(global.Symbol, 'Symbol', symbol('tag'), {}, '@@iterator');
+  setToStringTag(Symbol, SYMBOL);
+}(symbol('tag'), 'iterator', TO_STRING + 'Tag', {});

src/es6.js

 /**
  * ECMAScript 6 shim
  * http://people.mozilla.org/~jorendorff/es6-draft.html
- * http://wiki.ecmascript.org/doku.php?id=harmony:proposals
- * Alternatives:
- * https://github.com/paulmillr/es6-shim
- * https://github.com/monolithed/ECMAScript-6
- * https://github.com/inexorabletash/polyfill/blob/master/harmony.js
  */
 !function(isFinite){
+  // 20.2.2.28 Math.sign(x)
   function sign(it){
@@ -24,4 +20,5 @@ return (it = +it) == 0 || it != it ? it : it < 0 ? -1 : 1;
   // Works with __proto__ only. Old v8 can't works with null proto objects.
-  __PROTO__ && (function(set, buggy){
-    try { set({}, $Array) }
+  __PROTO__ && function(set){
+    var buggy;
+    try { set({}, ArrayProto) }
     catch(e){ buggy = true }
@@ -31,3 +28,3 @@ $define(STATIC, OBJECT, {
         assertObject(O);
-        assert(isObject(proto) || proto === null, "Can't set", proto, 'as prototype');
+        assert(proto === null || isObject(proto), proto, ": can't set as prototype!");
         if(buggy)O.__proto__ = proto;
@@ -38,3 +35,3 @@ else set(O, proto);
     });
-  })(unbind(getOwnPropertyDescriptor($Object, '__proto__').set));
+  }(ctx(call, getOwnDescriptor(ObjectProto, '__proto__').set, 2));
   $define(STATIC, NUMBER, {
@@ -53,3 +50,3 @@ // 20.1.2.1 Number.EPSILON
     isNaN: function(number){
-      return typeof number == 'number' && number != number;
+      return number != number;
     },
@@ -73,7 +70,8 @@ // 20.1.2.5 Number.isSafeInteger(number)
     , log       = Math.log
-    , sqrt      = Math.sqrt;
+    , sqrt      = Math.sqrt
+    , Oxffff    = 0xffff;
   function asinh(x){
     return !isFinite(x = +x) || x === 0 ? x : x < 0 ? -asinh(-x) : log(x + sqrt(x * x + 1));
   }
-  $define(STATIC, 'Math', {
+  $define(STATIC, MATH, {
     // 20.2.2.3 Math.acosh(x)
@@ -90,3 +88,3 @@ // Returns an implementation-dependent approximation to the inverse hyperbolic cosine of x.
     atanh: function(x){
-      return x === 0 ? x : 0.5 * log((1 + x) / (1 - x));
+      return x === 0 ? x : .5 * log((1 + x) / (1 - x));
     },
@@ -96,8 +94,7 @@ // 20.2.2.9 Math.cbrt(x)
     cbrt: function(x){
-      return sign(x) * pow(abs(x), 1/3);
+      return sign(x) * pow(abs(x), 1 / 3);
     },
     // 20.2.2.11 Math.clz32 (x)
     clz32: function(x){
-      x = x >>> 0;
-      return x ? 32 - x.toString(2).length : 32;
+      return (x >>>= 0) ? 32 - x[TO_STRING](2).length : 32;
     },
@@ -115,3 +112,3 @@ // 20.2.2.12 Math.cosh(x)
     // 20.2.2.16 Math.fround(x)
-    // fround: function(x){ TODO },
+    // TODO
     // 20.2.2.17 Math.hypot([value1[, value2[, … ]]])
@@ -133,7 +130,7 @@ // Returns an implementation-dependent approximation of the square root
     imul: function(x, y){
-      var xh = (x >>> 0x10) & 0xffff
-        , xl = x & 0xffff
-        , yh = (y >>> 0x10) & 0xffff
-        , yl = y & 0xffff;
-      return xl * yl + (((xh * yl + xl * yh) << 0x10) >>> 0) | 0;
+      var xh = Oxffff & x >>> 0x10
+        , xl = Oxffff & x
+        , yh = Oxffff & y >>> 0x10
+        , yl = Oxffff & y;
+      return 0 | xl * yl + (xh * yl + xl * yh << 0x10 >>> 0);
     },
@@ -162,3 +159,3 @@ // 20.2.2.20 Math.log1p(x)
     sinh: function(x){
-      return ((x = +x) == -Infinity) || x == 0 ? x : (exp(x) - exp(-x)) / 2;
+      return (x = +x) == -Infinity || x == 0 ? x : (exp(x) - exp(-x)) / 2;
     },
@@ -178,14 +175,10 @@ // 20.2.2.33 Math.tanh(x)
   // 20.2.1.9 Math [ @@toStringTag ]
-  setTag(Math, 'Math', 1);
-  /**
-    $define(STATIC, STRING, {
-      // 21.1.2.2 String.fromCodePoint(...codePoints)
-      // fromCodePoint: function(){ TODO },
-      // 21.1.2.4 String.raw(callSite, ...substitutions)
-      raw: function(){ TODO }
-    });
-    */
+  setToStringTag(Math, MATH, true);
+  // 21.1.2.2 String.fromCodePoint(...codePoints)
+  // TODO
+  // 21.1.2.4 String.raw(callSite, ...substitutions)
+  // TODO
   $define(PROTO, STRING, {
     // 21.1.3.3 String.prototype.codePointAt(pos)
-    // codePointAt: function(pos /* = 0 * /){ TODO },
+    // TODO
     // 21.1.3.6 String.prototype.contains(searchString, position = 0)
@@ -197,17 +190,21 @@ contains: function(searchString, position /* = 0 */){
     endsWith: function(searchString, endPosition /* = @length */){
-      var length = this.length;
+      var length = this.length
+        , end    = toLength(min(endPosition === undefined ? length : endPosition, length));
       searchString += '';
-      endPosition = toLength(min(endPosition === undefined ? length : endPosition, length));
-      return String(this).slice(endPosition - searchString.length, endPosition) === searchString;
+      return String(this).slice(end - searchString.length, end) === searchString;
     },
     // 21.1.3.13 String.prototype.repeat(count)
     repeat: function(count){
-      assert(0 <= (count |= 0), "Count can't be negative");
-      return Array(count + 1).join(this);
+      var str    = '' + this
+        , result = ''
+        , n      = toInteger(count);
+      assert(0 <= n, "Count can't be negative");
+      for(;n > 0; (n >>>= 1) && (str += str))if(n & 1)result += str;
+      return result;
     },
     // 21.1.3.18 String.prototype.startsWith(searchString [, position ])
     startsWith: function(searchString, position /* = 0 */){
+      var index = toLength(min(position, this.length));
       searchString += '';
-      position = toLength(min(position, this.length));
-      return String(this).slice(position, position + searchString.length) === searchString;
+      return String(this).slice(index, index + searchString.length) === searchString;
     }
@@ -218,53 +215,53 @@ });
     from: function(arrayLike, mapfn /* -> it */, thisArg /* = undefind */){
-      if(mapfn !== undefined)assertFunction(mapfn);
-      var O      = ES5Object(arrayLike)
-        , result = new (isFunction(this) ? this : Array)
-        , i = 0, length, iter, step;
-      if(isIterable && isIterable(O)){
-        iter = getIterator(O);
-        while(!(step = iter.next()).done)push.call(result, mapfn ? mapfn.call(thisArg, step.value, i++) : step.value);
-      } else for(length = toLength(O.length); i < length; i++)push.call(result, mapfn ? mapfn.call(thisArg, O[i], i) : O[i]);
+      var O       = ES5Object(arrayLike)
+        , result  = new (generic(this, Array))
+        , mapping = mapfn !== undefined
+        , index   = 0
+        , length, f;
+      if(mapping)f = ctx(mapfn, thisArg, 2);
+      if($for && isIterable(O))$for(O).of(function(value){
+        result[index] = mapping ? f(value, index) : value;
+        index++;
+      });
+      else for(length = toLength(O.length); length > index; index++){
+        result[index] = mapping ? f(O[index], index) : O[index];
+      }
+      result.length = index;
       return result;
     },
     // 22.1.2.3 Array.of( ...items)
-    of: function(/*...args*/){
-      var i = 0, length = arguments.length
-        , result = new (isFunction(this) ? this : Array);
-      while(i < length)push.call(result, arguments[i++]);
+    of: function(/* ...args */){
+      var index  = 0
+        , length = arguments.length
+        , result = new (generic(this, Array))(length);
+      while(length > index)result[index] = arguments[index++];
+      result.length = length;
       return result;
     }
   });
-  function findIndex(predicate, thisArg /* = undefind */){
-    assertFunction(predicate);
-    var O      = Object(this)
-      , self   = ES5Object(O)
-      , length = toLength(self.length)
-      , i = 0;
-    for(; i < length; i++){
-      if(i in self && predicate.call(thisArg, self[i], i, O))return i;
-    }
-    return -1;
-  }
   $define(PROTO, ARRAY, {
     // 22.1.3.3 Array.prototype.copyWithin(target, start, end = this.length)
-    // copyWithin: function(target, start, end){ TODO },
+    // TODO
     // 22.1.3.6 Array.prototype.fill(value, start = 0, end = this.length)
     fill: function(value, start /* = 0 */, end /* = @length */){
-      var length = toLength(this.length);
-      start = toInteger(start);
-      if(0 > start)start = length + start;
-      end = end == undefined ? length : toInteger(end);
-      while(end > start)this[start++] = value;
+      var length = toLength(this.length)
+        , index  = toInteger(start)
+        , endPos;
+      if(index < 0)index = max(index + length, 0);
+      if(end === undefined)endPos = length;
+      else {
+        endPos = toInteger(end);
+        if(endPos < 0)endPos += length;
+        endPos = min(endPos, length);
+      }
+      while(endPos > index)this[index++] = value;
       return this;
     },
     // 22.1.3.8 Array.prototype.find(predicate, thisArg = undefined)
-    find: function(predicate, thisArg /* = undefind */){
-      var index = findIndex.call(this, predicate, thisArg);
-      if(~index)return ES5Object(this)[index];
-    },
+    find:      createArrayMethod(5),
     // 22.1.3.9 Array.prototype.findIndex(predicate, thisArg = undefined)
-    findIndex: findIndex
+    findIndex: createArrayMethod(6)
   });
   // 24.3.3 JSON [ @@toStringTag ]
-  setTag(global.JSON, 'JSON', 1);
+  setToStringTag(global.JSON, 'JSON', true);
 }(isFinite);

src/function.js

@@ -1,13 +0,11 @@
-$define(STATIC, FUNCTION, {
-  isFunction: isFunction,
-  isNative: isNative
-});
 $define(PROTO, FUNCTION, {
   // 7.3.18 Construct (F, argumentsList)
   construct: function(args){
-    assertFunction(this);
-    var instance = create(this[PROTOTYPE])
-      , result   = this.apply(instance, ES5Object(args));
+    var instance = create(assertFunction(this)[PROTOTYPE])
+      , result   = invoke(this, args, instance);
     return isObject(result) ? result : instance;
+  },
+  invoke: function(args, that){
+    return invoke(this, args, that);
   }
 });

src/immediate.js

@@ -10,16 +10,20 @@ /**
 // Node.js 0.9+ & IE10+ has setImmediate, else:
-isFunction(setImmediate) && isFunction(clearImmediate) || !function(postMessage, MessageChannel,
-    ONREADYSTATECHANGE, IMMEDIATE_PREFIX, counter, queue, defer, channel){
+isFunction(setImmediate) && isFunction(clearImmediate) || function(ONREADYSTATECHANGE){
+  var postMessage      = global.postMessage
+    , addEventListener = global.addEventListener
+    , MessageChannel   = global.MessageChannel
+    , counter          = 0
+    , queue            = {}
+    , defer, channel, port;
   setImmediate = function(fn){
-    var id   = IMMEDIATE_PREFIX + ++counter
-      , args = [], i = 1;
+    var args = [], i = 1;
     while(arguments.length > i)args.push(arguments[i++]);
-    queue[id] = function(){
-      (isFunction(fn) ? fn : Function(fn)).apply(undefined, args);
+    queue[++counter] = function(){
+      invoke(isFunction(fn) ? fn : Function(fn), args);
     }
-    defer(id);
+    defer(counter);
     return counter;
   }
   clearImmediate = function(id){
-    delete queue[IMMEDIATE_PREFIX + id];
+    delete queue[id];
   }
@@ -37,9 +41,9 @@ function run(id){
   // Node.js 0.8-
-  if(isNode){
+  if(NODE){
     defer = function(id){
-      process.nextTick(part.call(run, id));
+      nextTick(part.call(run, id));
     }
   // Modern browsers, skip implementation for WebWorkers
   // IE8 has postMessage, but it's sync & typeof its postMessage is object
-  } else if(isFunction(postMessage) && !global.importScripts){
+  } else if(addEventListener && isFunction(postMessage) && !global.importScripts){
     defer = function(id){
@@ -52,13 +56,12 @@ postMessage(id, '*');
     channel = new MessageChannel();
+    port    = channel.port2;
     channel.port1.onmessage = listner;
-    defer = ctx(channel.port2.postMessage, channel.port2);
+    defer = ctx(port.postMessage, port, 1);
   // IE8-
   } else if(document && ONREADYSTATECHANGE in document[CREATE_ELEMENT]('script')){
     defer = function(id){
-      var el = document[CREATE_ELEMENT]('script');
-      el[ONREADYSTATECHANGE] = function(){
-        el.parentNode.removeChild(el);
+      html.appendChild(document[CREATE_ELEMENT]('script'))[ONREADYSTATECHANGE] = function(){
+        html.removeChild(this);
         run(id);
       }
-      document.documentElement.appendChild(el);
     }
@@ -71,4 +74,6 @@ // Rest old browsers
   }
-}(global.postMessage, global.MessageChannel, 'onreadystatechange', symbol('immediate'), 0, {});
-$defineTimer('setImmediate', setImmediate);
-$defineTimer('clearImmediate', clearImmediate);
+}('onreadystatechange');
+$define(GLOBAL + BIND, {
+  setImmediate:   setImmediate,
+  clearImmediate: clearImmediate
+});

src/number.js

@@ -1,8 +0,3 @@
-$define(STATIC, NUMBER, {
-  /**
-   * Alternatives:
-   * http://mootools.net/docs/core/Types/Number#Number:toInt
-   */
-  toInteger: toInteger
-});
+// Number.toInteger was part of the draft ECMAScript 6 specification, but has been removed
+$define(STATIC, NUMBER, {toInteger: toInteger});
 $define(PROTO, NUMBER, {
@@ -17,13 +12,17 @@ /**
    */
-  times: function(fn /* = -> it */, that /* = undefined */){
-    var number = toLength(this)
-      , result = Array(number)
-      , i      = 0;
-    if(isFunction(fn))while(number > i)result[i] = fn.call(that, i, i++, this);
-    else while(number > i)result[i] = i++;
+  times: function(mapfn /* = -> it */, thisArg /* = undefined */){
+    var number = +this
+      , length = toLength(number)
+      , result = Array(length)
+      , i      = 0
+      , f;
+    if(isFunction(mapfn)){
+      f = ctx(mapfn, thisArg, 3);
+      while(length > i)result[i] = f(i, i++, number);
+    } else while(length > i)result[i] = i++;
     return result;
   },
-  random: function(number /* = 0 */){
-    var a = +this   || 0
-      , b = +number || 0
+  random: function(lim /* = 0 */){
+    var a = +this
+      , b = lim == undefined ? 0 : +lim
       , m = min(a, b);
@@ -33,13 +32,8 @@ return random() * (max(a, b) - m) + m;
 });
-$define(STATIC, 'Math', {
-  /**
-   * Alternatives:
-   * http://underscorejs.org/#random
-   * http://mootools.net/docs/core/Types/Number#Number:Number-random
-   */
-  randomInt: function(a /* = 0 */, b /* = 0 */){
-    a = toInteger(a);
-    b = toInteger(b);
-    var m = min(a, b);
-    return floor((random() * (max(a, b) + 1 - m)) + m);
+$define(STATIC, MATH, {
+  randomInt: function(lim1 /* = 0 */, lim2 /* = 0 */){
+    var a = toInteger(lim1)
+      , b = toInteger(lim2)
+      , m = min(a, b);
+    return floor(random() * (max(a, b) + 1 - m) + m);
   }
@@ -53,23 +47,22 @@ });
  */
-$define(PROTO, NUMBER, transform.call(
-  // IE... getOwnPropertyNames(Math)
+$define(PROTO, NUMBER, turn.call(
+  // IE... getNames(Math)
   array(
-    // ES3
+    // ES3:
     'round,floor,ceil,abs,sin,asin,cos,acos,tan,atan,exp,sqrt,max,min,pow,atan2,' +
-    // ES6
+    // ES6:
     'acosh,asinh,atanh,cbrt,clz32,cosh,expm1,hypot,imul,log1p,log10,log2,sign,sinh,tanh,trunc,' +
-    // Core.js
+    // Core:
     'randomInt'
   ),
   function(memo, key){
-    if(key in Math)memo[key] = (function(fn){
-      return function(/*...args*/){
-        // ie8- convert `this` to object -> convert it to number
-        var args = [+this]
-          , i    = 0;
-        while(arguments.length > i)args.push(arguments[i++]);
-        return fn.apply(undefined, args);
-      }
-    })(Math[key])
+    var fn = Math[key];
+    if(fn)memo[key] = function(/* ...args */){
+      // ie8- convert `this` to object -> convert it to number
+      var args = [+this]
+        , i    = 0;
+      while(arguments.length > i)args.push(arguments[i++]);
+      return invoke(fn, args);
+    }
   }, {}
 ));

src/object.js

@@ -1,68 +0,55 @@
-$define(STATIC, OBJECT, {
-  /**
-   * Alternatives:
-   * http://underscorejs.org/#has
-   * http://sugarjs.com/api/Object/has
-   */
-  isEnumerable: unbind(isEnumerable),
-  isPrototype: unbind($Object.isPrototypeOf),
-  // http://wiki.ecmascript.org/doku.php?id=harmony:extended_object_api
-  getPropertyDescriptor: getPropertyDescriptor,
+!function(){
+  var getSymbols      = Object.getOwnPropertySymbols
+    , getPropertyKeys = getSymbols
+      ? function(it){
+          return getNames(it).concat(getSymbols(it));
+        }
+      : getNames;
   // http://wiki.ecmascript.org/doku.php?id=strawman:extended_object_api
-  // ES7 : http://esdiscuss.org/topic/april-8-2014-meeting-notes#content-1
-  getOwnPropertyDescriptors: getOwnPropertyDescriptors,
-  /**
-   * Shugar for Object.create
-   * Alternatives:
-   * http://lodash.com/docs#create
-   */
-  make: function(proto, props){
-    return props == undefined ? create(proto) : create(proto, getOwnPropertyDescriptors(props));
-  },
-  /**
-   * 19.1.3.15 Object.mixin ( target, source )
-   * Removed in Draft Rev 22, January 20, 2014
-   * http://esdiscuss.org/topic/november-19-2013-meeting-notes#content-1
-   */
-  define: function(target, source){
-    return defineProperties(target, getOwnPropertyDescriptors(source));
-  },
-  // ~ ES7 : http://esdiscuss.org/topic/april-8-2014-meeting-notes#content-1
-  values: function(object){
-    var O      = ES5Object(object)
-      , names  = keys(object)
-      , length = names.length
+  // https://gist.github.com/WebReflection/9353781
+  function getOwnPropertyDescriptors(object){
+    var result = {}
+      , keys   = getPropertyKeys(object)
+      , length = keys.length
       , i      = 0
-      , result = Array(length);
-    while(length > i)result[i] = O[names[i++]];
-    return result;
-  },
-  // ~ ES7 : http://esdiscuss.org/topic/april-8-2014-meeting-notes#content-1
-  entries: function(object){
-    var O      = ES5Object(object)
-      , names  = keys(object)
-      , length = names.length
-      , i      = 0
-      , result = Array(length)
       , key;
-    while(length > i)result[i] = [key = names[i++], O[key]];
+    while(length > i)result[key = keys[i++]] = getOwnDescriptor(object, key);
     return result;
-  },
-  /**
-   * Alternatives:
-   * http://underscorejs.org/#isObject
-   * http://sugarjs.com/api/Object/isType
-   * http://docs.angularjs.org/api/angular.isObject
-   */
-  isObject: isObject,
-  /**
-   * Alternatives:
-   * http://livescript.net/#operators -> typeof!
-   * http://mootools.net/docs/core/Core/Core#Core:typeOf
-   * http://api.jquery.com/jQuery.type/
-   */
-  classof: classof,
-  // Simple symbol API
-  symbol: symbol,
-  hidden: hidden
-});
+  }
+  $define(STATIC, OBJECT, {
+    isPrototype: ctx(call, ObjectProto.isPrototypeOf, 2),
+    getOwnPropertyKeys: getPropertyKeys,
+    // http://wiki.ecmascript.org/doku.php?id=harmony:extended_object_api
+    getPropertyDescriptor: function(object, key){
+      var O = object;
+      if(key in O)do {
+        if(has(O, key))return getOwnDescriptor(O, key);
+      } while(O = getPrototypeOf(O));
+    },
+    // http://wiki.ecmascript.org/doku.php?id=strawman:extended_object_api
+    // ES7 : http://esdiscuss.org/topic/april-8-2014-meeting-notes#content-1
+    getOwnPropertyDescriptors: getOwnPropertyDescriptors,
+    /**
+     * Shugar for Object.create
+     * Alternatives:
+     * http://lodash.com/docs#create
+     */
+    make: function(proto, props){
+      return assign(create(proto), props);
+    },
+    /**
+     * 19.1.3.15 Object.mixin ( target, source )
+     * Removed in Draft Rev 22, January 20, 2014
+     * http://esdiscuss.org/topic/november-19-2013-meeting-notes#content-1
+     */
+    define: function(target, source){
+      return defineProperties(target, getOwnPropertyDescriptors(source));
+    },
+    // ~ ES7 : http://esdiscuss.org/topic/april-8-2014-meeting-notes#content-1
+    values: createObjectToArray(false),
+    // ~ ES7 : http://esdiscuss.org/topic/april-8-2014-meeting-notes#content-1
+    entries: createObjectToArray(true),
+    isObject: isObject,
+    classof: classof
+  });
+}();

src/regexp.js

@@ -1,14 +0,4 @@
-!function(escape){
-  /**
-   * https://gist.github.com/kangax/9698100
-   * Alternatives:
-   * http://sugarjs.com/api/String/escapeRegExp
-   * http://api.prototypejs.org/language/RegExp/escape/
-   * http://mootools.net/docs/core/Types/String#String:escapeRegExp
-   */
-  $define(STATIC, REGEXP, {
-    escape: function(it){
-      return String(it).replace(escape, '\\$1');
-    }
-  });
-}(/([\\\-[\]{}()*+?.,^$|])/g);
+// ~ES7 : https://gist.github.com/kangax/9698100
+$define(STATIC, REGEXP, {
+  escape: createEscaper(/([\\\-[\]{}()*+?.,^$|])/g, '\\$1', true)
+});

src/string.js

@@ -9,31 +9,9 @@ !function(){
       }
-    , unescapeHTMLDict = transform.call(keys(escapeHTMLDict), function(memo, key){
+    , unescapeHTMLDict = turn.call(getKeys(escapeHTMLDict), function(memo, key){
         memo[escapeHTMLDict[key]] = key;
-      }, {})
-    , RegExpEscapeHTML   = /[&<>"']/g
-    , RegExpUnescapeHTML = /&(?:amp|lt|gt|quot|apos);/g;
+      }, {});
   $define(PROTO, STRING, {
-    /**
-     * Alternatives:
-     * http://underscorejs.org/#escape
-     * http://sugarjs.com/api/String/escapeHTML
-     * http://api.prototypejs.org/language/String/prototype/escapeHTML/
-     */
-    escapeHTML: function(){
-      return String(this).replace(RegExpEscapeHTML, function(part){
-        return escapeHTMLDict[part];
-      });
-    },
-    /**
-     * Alternatives:
-     * http://underscorejs.org/#unescape
-     * http://sugarjs.com/api/String/unescapeHTML
-     * http://api.prototypejs.org/language/String/prototype/unescapeHTML/
-     */
-    unescapeHTML: function(){
-      return String(this).replace(RegExpUnescapeHTML, function(part){
-        return unescapeHTMLDict[part];
-      });
-    }
+    escapeHTML:   createEscaper(/[&<>"']/g, escapeHTMLDict),
+    unescapeHTML: createEscaper(/&(?:amp|lt|gt|quot|apos);/g, unescapeHTMLDict)
   });
 }();

src/timers.js

@@ -5,9 +5,7 @@ /**
  * http://www.whatwg.org/specs/web-apps/current-work/multipage/timers.html#timers
- * Alternatives:
- * https://developer.mozilla.org/ru/docs/Web/API/Window.setTimeout#IE_Only_Fix
  */
 !function(navigator){
   function wrap(set){
-    return function(fn, time /*, ...args*/){
-      return set(part.apply(isFunction(fn) ? fn : Function(fn), $slice(arguments, 2)), time || 1);
+    return function(fn, time /*, ...args */){
+      return set(invoke(part, slice.call(arguments, 2), isFunction(fn) ? fn : Function(fn)), time || 1);
     }
@@ -20,4 +18,6 @@ }
   }
-  $defineTimer('setTimeout', setTimeout);
-  $defineTimer('setInterval', setInterval);
+  $define(GLOBAL + BIND + FORCED * !isNative(setTimeout), {
+    setTimeout:  setTimeout,
+    setInterval: setInterval
+  });
 }(global.navigator);

Fixed alerts

Dynamic require

Supply chain risk

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

Found 1 instance in 1 package

Improved metrics

Number of lines in readme file

210

increased by1300%

Number of low supply chain risk alerts

0

decreased by-100%

Worsened metrics

Total package byte prevSize

631703

decreased by-8.43%

Dev dependency count

13

increased by8.33%

Number of package files

62

decreased by-7.46%

Lines of code

13859

decreased by-19%

No dependency changes