Run results for: Immer/Ramda

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.1.0; Aquaris X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.127 Mobile Safari/537.36 OPR/60.2.3004.55409

Browser: Opera Mobile 60

Operating system: Android 8.1.0

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
JS	225995.5 Ops/sec
Ramda	95684.7 Ops/sec
Immer	14604.4 Ops/sec

HTML Preparation code:

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
<script src="//cdn.jsdelivr.net/npm/immer/dist/immer.umd.js"></script>

Script Preparation code:

window.foo = { 
  a: Array(100).fill(), 
  b: Array(100).fill(), 
  c: { 
    e: {
      g: Array(100).fill(),
      h: {
        i: false,
        j: Array(100).fill()
      }
    }, 
    f: Array(100).fill()
  }, 
  d: 1 
}

Tests:

JS
const newFoo = { ...foo, c: { ...foo.c, e: { ...foo.c.e, h: { ...foo.c.e.h, i: true } } } }
Ramda
const newFoo = R.mergeDeepRight(foo, { c: { e: { h: { i: true }}}})
Immer
const newFoo = immer.produce(foo, (draft) => { draft.c.e.h.i = true })

Run results for: Immer/Ramda

JS

Ramda

Immer