node_modules/core-js/library/modules/es6.set.js


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

// 23.2 Set Objects
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);