Listing latest benchmark results

mutate

4.1M/s

shallow copy

1.9M/s

Immutable js test

1.4M/s

ramda lens

118K/s

immutable js (toJS)

43K/s

immer

30K/s

Fastest: mutate (136.5x faster)

View exact numbers

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Browser	OS	Engine	User Agent	When Created
Firefox 146	Mac OS X 10.15	Benchmark.js	Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:146.0) Gecko/20100101 Firefox/146.0	7 months ago
Firefox 146	Mac OS X 10.15	Benchmark.js	Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:146.0) Gecko/20100101 Firefox/146.0	7 months ago
Firefox 145	Windows	Benchmark.js	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:145.0) Gecko/20100101 Firefox/145.0	9 months ago
Firefox Mobile 132	Android	Benchmark.js	Mozilla/5.0 (Android 14; Mobile; rv:132.0) Gecko/132.0 Firefox/132.0	one year ago
Chrome 126	Mac OS X 10.15.7	Benchmark.js	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36	2 years ago
Firefox 115	Mac OS X 10.15	Benchmark.js	Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/115.0	2 years ago
Chrome 124	Mac OS X 10.15.7	Benchmark.js	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36	2 years ago
Chrome 124	Windows	Benchmark.js	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36	2 years ago
Chrome 119	Mac OS X 10.15.7	Benchmark.js	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	2 years ago
Chrome 119	Linux	Benchmark.js	Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36	2 years ago

Browser

Engine

User Agent

When Created

Firefox 146

Mac OS X 10.15

Benchmark.js

7 months ago

Firefox 146

Mac OS X 10.15

Benchmark.js