Run results for: Set vs Object

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36

Browser: Chrome 52

Operating system: Mac OS X 10.11.6

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
Has Object	5103885.5 Ops/sec
Has Set	4172157.5 Ops/sec

Script Preparation code:

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

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

Tests: