es6.map.js

'use strict';
var strong = require('./$.collection-strong');

// 23.1 Map Objects
require('./$.collection')('Map', function(get){
  return function Map(){ return get(this, arguments[0]); };
}, {
  // 23.1.3.6 Map.prototype.get(key)
  get: function get(key){
    var entry = strong.getEntry(this, key);
    return entry && entry.v;
  },
  // 23.1.3.9 Map.prototype.set(key, value)
  set: function set(key, value){
    return strong.def(this, key === 0 ? 0 : key, value);
  }
}, strong, true);