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Run results for: JavaScript spread operator vs Object.assign performance, non destructive with only one object

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Run details:
Mozilla/5.0 (iPhone; CPU iPhone OS 15_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6 Mobile/15E148 Safari/604.1
Mobile Safari 15
iOS 15.6
Mobile
2 years ago
Test name Executions per second
Using the spread operator 14595909.0 Ops/sec
Using Object.assign 4140411.8 Ops/sec
Tests:

  • Using the spread operator

    AخA
     
    const firstObject = { sampleData: 'Hello world' }
    const finalObject = {
        ...firstObject,
    };

  • Using Object.assign

     
    const firstObject = { sampleData: 'Hello world' }
    const finalObject = Object.assign({}, firstObject);