Run results for: Spread vs Ramda's mergeLeft

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Spread

14.6M/s

MergeLeft

3.9M/s

View exact numbers

Test name	Executions per second
✓ Spread	14,561,391 Ops/sec
MergeLeft	3,914,381 Ops/sec

HTML Preparation code:


<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.29.1/ramda.min.js"></script>

Tests:

Spread
var a = { a: 'oh', b: 'my' }; var b = { b: 'my2', c: 'goddess' }; var c = { ...a, ...b };
MergeLeft
var a = { a: 'oh', b: 'my' }; var b = { b: 'my2', c: 'goddess' }; var c = R.mergeLeft(b, a);