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Run results for:
Lodash cloneDeep vs structuredClone vs recursiveDeepCopy vs JSON clone
https://developer.mozilla.org/en-US/docs/Web/API/structuredClone
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=615942" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36
Browser:
Chrome 139
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
11 months ago
recursiveDeepCopy
7.6M/s
Json Clone
2.3M/s
Lodash cloneDeep
2.1M/s
Native structuredClone
1.0M/s
View exact numbers
Test name
Executions per second
✓
recursiveDeepCopy
7,612,692 Ops/sec
Json Clone
2,271,316 Ops/sec
Lodash cloneDeep
2,122,094 Ops/sec
Native structuredClone
1,000,138 Ops/sec
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
var MyObject = { description: 'Creates a deep copy of source, which should be an object or an array.', myNumber: 123456789, myBoolean: true, jayson: { stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....', parse: 'JSON.parse() method parses a JSON string...' } }; var myCopy = null; function recursiveDeepCopy(o) { var newO, i; if (typeof o !== 'object') { return o; } if (!o) { return o; } if ('[object Array]' === Object.prototype.toString.apply(o)) { newO = []; for (i = 0; i < o.length; i += 1) { newO[i] = recursiveDeepCopy(o[i]); } return newO; } newO = {}; for (i in o) { if (o.hasOwnProperty(i)) { newO[i] = recursiveDeepCopy(o[i]); } } return newO; }
Tests:
Lodash cloneDeep
myCopy = _.cloneDeep(MyObject);
Native structuredClone
myCopy = structuredClone(MyObject);
recursiveDeepCopy
myCopy = recursiveDeepCopy(MyObject);
Json Clone
myCopy = JSON.parse(JSON.stringify(MyObject));