/* */ 
'use strict';
var $ = require("./$"),
    $def = require("./$.def"),
    $iter = require("./$.iter"),
    BUGGY = $iter.BUGGY,
    forOf = require("./$.for-of"),
    assertInstance = require("./$.assert").inst,
    INTERNAL = require("./$.uid").safe('internal');
module.exports = function(NAME, wrapper, methods, common, IS_MAP, IS_WEAK) {
  var Base = $.g[NAME],
      C = Base,
      ADDER = IS_MAP ? 'set' : 'add',
      proto = C && C.prototype,
      O = {};
  if (!$.DESC || !$.isFunction(C) || !(IS_WEAK || !BUGGY && proto.forEach && proto.entries)) {
    C = common.getConstructor(wrapper, NAME, IS_MAP, ADDER);
    require("./$.mix")(C.prototype, methods);
  } else {
    C = wrapper(function(target, iterable) {
      assertInstance(target, C, NAME);
      target[INTERNAL] = new Base;
      if (iterable != undefined)
        forOf(iterable, IS_MAP, target[ADDER], target);
    });
    $.each.call('add,clear,delete,forEach,get,has,set,keys,values,entries'.split(','), function(KEY) {
      var chain = KEY == 'add' || KEY == 'set';
      if (KEY in proto)
        $.hide(C.prototype, KEY, function(a, b) {
          var result = this[INTERNAL][KEY](a === 0 ? 0 : a, b);
          return chain ? this : result;
        });
    });
    if ('size' in proto)
      $.setDesc(C.prototype, 'size', {get: function() {
          return this[INTERNAL].size;
        }});
  }
  require("./$.cof").set(C, NAME);
  O[NAME] = C;
  $def($def.G + $def.W + $def.F, O);
  require("./$.species")(C);
  if (!IS_WEAK)
    common.setIter(C, NAME, IS_MAP);
  return C;
};
