Tests:
  • Using the spread operator

    AخA
     
    const firstObject = { sampleData: 'Hello world', moreData: 'foo bar', evenMoreData: 'overridethis' }
    const finalObject = {
        ...firstObject,
        evenMoreData: 'test'
    };
  • Using Object.assign

     
    const firstObject = { sampleData: 'Hello world', moreData: 'foo bar', evenMoreData: 'overridethis'  }
    const finalObject = Object.assign(firstObject, {evenMoreData: 'test'});
  • New object

     
    const firstObject = { sampleData: 'Hello world', moreData: 'foo bar', evenMoreData: 'overridethis' }
    const finalObject = {
        sampleData: firstObject.sampleData,
        moreData: firstObject.firstObject,
        evenMoreData: 'test'
    };
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

  • Test case name Result
    Using the spread operator
    Using Object.assign
    New object

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 9 months ago)
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:128.0) Gecko/20100101 Firefox/128.0
Firefox 128 on Windows
View result in a separate tab
Test name Executions per second
Using the spread operator 13171136.0 Ops/sec
Using Object.assign 18790070.0 Ops/sec
New object 1294828288.0 Ops/sec