| 'use strict'; |
| var global = require('./_global') |
| , $export = require('./_export') |
| , meta = require('./_meta') |
| , fails = require('./_fails') |
| , hide = require('./_hide') |
| , redefineAll = require('./_redefine-all') |
| , forOf = require('./_for-of') |
| , anInstance = require('./_an-instance') |
| , isObject = require('./_is-object') |
| , setToStringTag = require('./_set-to-string-tag') |
| , dP = require('./_object-dp').f |
| , each = require('./_array-methods')(0) |
| , DESCRIPTORS = require('./_descriptors'); |
| |
| module.exports = function(NAME, wrapper, methods, common, IS_MAP, IS_WEAK){ |
| var Base = global[NAME] |
| , C = Base |
| , ADDER = IS_MAP ? 'set' : 'add' |
| , proto = C && C.prototype |
| , O = {}; |
| if(!DESCRIPTORS || typeof C != 'function' || !(IS_WEAK || proto.forEach && !fails(function(){ |
| new C().entries().next(); |
| }))){ |
| // create collection constructor |
| C = common.getConstructor(wrapper, NAME, IS_MAP, ADDER); |
| redefineAll(C.prototype, methods); |
| meta.NEED = true; |
| } else { |
| C = wrapper(function(target, iterable){ |
| anInstance(target, C, NAME, '_c'); |
| target._c = new Base; |
| if(iterable != undefined)forOf(iterable, IS_MAP, target[ADDER], target); |
| }); |
| each('add,clear,delete,forEach,get,has,set,keys,values,entries,toJSON'.split(','),function(KEY){ |
| var IS_ADDER = KEY == 'add' || KEY == 'set'; |
| if(KEY in proto && !(IS_WEAK && KEY == 'clear'))hide(C.prototype, KEY, function(a, b){ |
| anInstance(this, C, KEY); |
| if(!IS_ADDER && IS_WEAK && !isObject(a))return KEY == 'get' ? undefined : false; |
| var result = this._c[KEY](a === 0 ? 0 : a, b); |
| return IS_ADDER ? this : result; |
| }); |
| }); |
| if('size' in proto)dP(C.prototype, 'size', { |
| get: function(){ |
| return this._c.size; |
| } |
| }); |
| } |
| |
| setToStringTag(C, NAME); |
| |
| O[NAME] = C; |
| $export($export.G + $export.W + $export.F, O); |
| |
| if(!IS_WEAK)common.setStrong(C, NAME, IS_MAP); |
| |
| return C; |
| }; |