charlike/templates/node_modules/core-js/modules/es6.set.js

Small, fast, simple and streaming project scaffolder for myself, but not only. Supports hundreds of template engines through the @JSTransformers API or if you want custom `render` function passed through options

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

// 23.2 Set Objects
module.exports = require('./_collection')('Set', function(get){
  return function Set(){ return get(this, arguments.length > 0 ? arguments[0] : undefined); };
}, {
  // 23.2.3.1 Set.prototype.add(value)
  add: function add(value){
    return strong.def(this, value = value === 0 ? 0 : value, value);
  }
}, strong);