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Run results for: Immer@4 vs Spread Reduce

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:82.0) Gecko/20100101 Firefox/82.0
Firefox 82
Windows
Desktop
4 years ago
Test name Executions per second
immer 2305.7 Ops/sec
Mutate 1096855.8 Ops/sec
Spread 34743.4 Ops/sec
immer pull up 27485.8 Ops/sec
HTML Preparation code:
AخA
 
1
<script src="https://cdn.jsdelivr.net/npm/immer@4.0.0/dist/immer.umd.min.js"></script>
2
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
 
data = _.range(100)
Tests:

  • immer

     
    const reducer = immer.produce((draft, curr) => { draft[0] = 0; });
    const answer = data.reduce(reducer, {})

  • Mutate

     
    const reducer = (draft, curr) => { draft[0] = 0; return draft; };
    const answer = data.reduce(reducer, {})

  • Spread

     
    const answer = data.reduce((acc, curr) => ({
      ...acc,
      0: 0,
    }), {});

  • immer pull up

     
    const answer = immer.produce({}, draft => { data.reduce((acc, curr) => { acc[0] = 0; return acc }, draft) });