1 var nativeCreate = require(
'./_nativeCreate');
4 var HASH_UNDEFINED =
'__lodash_hash_undefined__';
16 function hashSet(key, value) {
17 var data = this.__data__;
18 this.size += this.has(key) ? 0 : 1;
19 data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
23 module.exports = hashSet;