Run results for: Ramda vs Native Reduce Trials

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.212 Safari/537.36

Browser: Chrome 90

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Ramda Reduce	340835.5 Ops/sec
Native Reduce	37907.4 Ops/sec
Native Map + Reduce	32244.9 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/ramda@0.27.0/dist/ramda.min.js"></script>

Script Preparation code:

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var rReduce = R.pipe( R.map( R.props( ['index', 'name'] ) ), R.fromPairs );

Tests:

Ramda Reduce
rReduce(data);
Native Reduce
data.reduce((acc, curr) => { const { index, ...rest } = curr; acc[index] = { ...rest, }; return acc; }, {});
Native Map + Reduce
data .map(({ index, ...rest }) => ({ [index]: rest })) .reduce((acc, curr) => Object.assign(acc, curr), {});

Run results for: Ramda vs Native Reduce Trials

Ramda Reduce

Native Reduce

Native Map + Reduce