es6.set.js

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

// 23.2 Set Objects
require('./$.collection')('Set', function(get){
  return function Set(){ return get(this, arguments[0]); };
}, {
  // 23.2.3.1 Set.prototype.add(value)
  add: function add(value){
    return strong.def(this, value = value === 0 ? 0 : value, value);
  }
}, strong);