Run results for: Ramda Lens vs Patchinko vs Object spread

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36

Browser: Chrome 72

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Object spread	4390786.0 Ops/sec
Patchinko	424251.0 Ops/sec
Ramda Lens	610168.8 Ops/sec

HTML Preparation code:

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
<script src=//unpkg.com/patchinko@4.1.0/immutable.js></script>

Script Preparation code:

// Initial state
var state = {
  visible: false,
  lazy: { test: true, number: 44 },
  count: 1
}

// Define reducers ahead of time

var spread = state => ({
  ...state,
  lazy: {
    ...state.lazy,
    test: !state.lazy.test
  }
})

var patchinko = state =>
  O(state, {
    lazy: O({
      test: O(test => !test),
    }),
  })

var lens = R.lensPath(["lazy", "test"])
var ramda = state => {
  return R.over(lens, test => !test, state)
}

Tests:

Object spread
var data = spread(state)
Patchinko
var data = patchinko(state)
Ramda Lens
var data = ramda(state)