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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36

Browser: Chrome 79

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
groupBy	7058.0 Ops/sec
Native JS GroupBy	4608.6 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