Run results for: Lodash CloneDeep vs Immer Produce with heavy load

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Produce

515K/s

CloneDeep

7K/s

View exact numbers

Test name	Executions per second
✓ Produce	514,707 Ops/sec
CloneDeep	7,167 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/immer@3.1.3/dist/immer.umd.min.js"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

state =  {
    data: {
      data1: {
        data2: 'test',
      },
      data3: Array.from({length: 1000}).map(() => document.createElement('div'))
    }
  };

Tests:

Produce
const result = immer.produce(state, draft => { draft.data.data1.data2 = 'updated' })
CloneDeep
const result = _.cloneDeep(state); result.data.data1.data2 = 'updated';