Run results for: Lodash _.union vs native Set()

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/87.0.4280.163 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 87

Operating system: iOS 14.4

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
_.union	1630397.0 Ops/sec
Set()	1089875.0 Ops/sec
Set() convert back to array	918131.0 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js"></script>

Script Preparation code:

var a = [1, 2, 3, 4, 5]
var b = [3, 4, 5, 6, 7]

Tests:

_.union
var c = _.union(a, b)
Set()
var c = new Set(a, b)
Set() convert back to array
var c = new Set(a, b) var d = Array.from(c)

Run results for: Lodash _.union vs native Set()

_.union

Set()

Set() convert back to array