MeasureThat.net

Run results for: spread vs assign vs _.merge

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Run details:
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.102 Safari/537.36 OPR/90.0.4480.84
Opera 90
Windows 7
Desktop
2 years ago
Test name Executions per second
lodash merge 2635897.5 Ops/sec
object.assign 3750416.8 Ops/sec
spread 1871440.1 Ops/sec
HTML Preparation code:
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<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Tests:

  • lodash merge

     
    var a = { a: 'oh', b: 'my' };
    var b = { c: 'goddess' };
    var c = _.merge(a, b);

  • object.assign

     
    var a = { a: 'oh', b: 'my' };
    var b = { c: 'goddess' };
    var c = Object.assign({}, a, b);

  • spread

     
    var a = { a: 'oh', b: 'my' };
    var b = { c: 'goddess' };
    var c = { ...a, ...b };