Run results for: # Vijay => To test the performance of lodash groupby vs native JS groupby implementation

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.1.0; SM-T580) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.101 Safari/537.36

Browser: Chrome 87

Operating system: Android 8.1.0

Device Platform: Tablet

Date tested: 3 years ago

Test name	Executions per second
groupBy	1780.3 Ops/sec
Native JS GroupBy	145302200.0 Ops/sec

HTML Preparation code:

<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>

Script Preparation code:


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Tests:

groupBy
function prepData(d) { let retObj = {}; retObj.storeNbr = d.storeNbr; retObj[d.ruleType] = d.ruleType; return retObj; }; let _groupedData = []; _groupedData = _.groupBy(data, function(value) { return ( value.storeNbr + "#" + value.ruleType ); }); _.map(_groupedData, prepData);
Native JS GroupBy
var groupBy = function(xs, key) { return xs.reduce(function(rv, x) { (rv[x[key]] = rv[x[key]] || []).push(x); return rv; }, {}); };

Run results for: # Vijay => To test the performance of lodash groupby vs native JS groupby implementation

To test if native js implementation is better compared to Lodash

groupBy

Native JS GroupBy