Run results for: Set union forEach vs forOf

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0

Browser: Firefox 66

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
forEach	77.2 Ops/sec
for of	80.5 Ops/sec

Script Preparation code:

var a = new Set();
for (var i = 0; i < 100000; i++) {
  a.add(i);
}

var b = new Set();
for (var i = 0; i < 200000; i+= 2) {
  b.add(i);
}

Tests: