00001 var nativeCreate = require('./_nativeCreate'); 00002 00004 var HASH_UNDEFINED = '__lodash_hash_undefined__'; 00005 00016 function hashSet(key, value) { 00017 var data = this.__data__; 00018 this.size += this.has(key) ? 0 : 1; 00019 data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value; 00020 return this; 00021 } 00022 00023 module.exports = hashSet;