Run results for: Set vs Object

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36

Browser: Chrome 55

Operating system: Mac OS X 10.12.1

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Has Object	4379845.0 Ops/sec
Has Set	3507218.0 Ops/sec

Script Preparation code:

var a = ['ab', 'cd', 'ef', 'gh'];
var s = new Set(a);
var d = {};
a.forEach(val => {
  d[val] = true;
});

Tests: