MeasureThat.net

Run results for: lodash merge vs object.assign vs spread new obj

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Safari/605.1.15
Safari 18
Mac OS X 10.15.7
Desktop
one month ago
Test name Executions per second
lodash merge 1481575.6 Ops/sec
object.assign 7577954.5 Ops/sec
spread 9130066.0 Ops/sec
HTML Preparation code:
​x
 
1
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2
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
 
var a = { a: 'oh', b: 'my' };
var b = { c: 'goddess', d: 'a', e: 'b', j: { asd: 'test' } };
Tests:

  • lodash merge

     
    var c = _.merge({}, a, b);

  • object.assign

     
    ​
    var c = Object.assign({}, a, b);

  • spread

     
    var c = { ...a, ...b };