Benchmark: Complex mapping - MeasureThat.net

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

function generateNumberPairs(x) {
    return Array.from({
        length: x
    }, () => [
        Math.floor(Math.random() * 100),
        Math.floor(Math.random() * 100)
    ]);
}

const e = generateNumberPairs(1000);

const parser = (pair) => ({
    first: +pair[0],
    second: +pair[1]
});

function lodashMap() {
    return _.map(e, parser);
}

function jsMap() {
    return e.map(parser);
}

function pushReducer(acc, el) {
    acc.push(parser(el));
    return acc
}

function lodashPushReduce() {
    return _.reduce(e, pushReducer, []);
}

function jsPushReduce() {
    return e.reduce(pushReducer, []);
}

function spreadReducer(acc, el) {
    return [...acc, parser(el)];
}

function lodashSpreadReduce() {
    return _.reduce(e, spreadReducer, []);
}

function jsSpreadReduce() {
    return e.reduce(spreadReducer, []);
}

Tests:

lodashMap
lodashMap()
jsMap
jsMap()
lodashPushReduce
lodashPushReduce()
jsPushReduce
jsPushReduce()
lodashSpreadReduce
lodashSpreadReduce()
jsSpreadReducer
jsSpreadReduce()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodashMap
jsMap
lodashPushReduce
jsPushReduce
lodashSpreadReduce
jsSpreadReducer

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser/OS: Chrome 135 on Windows

View result in a separate tab

lodashMap

294K/s

jsMap

242K/s

jsPushReduce

84K/s

lodashPushReduce

67K/s

lodashSpreadReduce

110/s

jsSpreadReducer

110/s

View exact numbers

Test name	Executions per second
✓ lodashMap	293,515 Ops/sec
jsMap	242,136 Ops/sec
jsPushReduce	83,995 Ops/sec
lodashPushReduce	67,261 Ops/sec
lodashSpreadReduce	110 Ops/sec
jsSpreadReducer	110 Ops/sec

Complex mapping (version: 3)

Comparing performance of: `lodashMap vs jsMap vs lodashPushReduce vs jsPushReduce vs lodashSpreadReduce vs jsSpreadReducer`

Created: one year ago by: Registered User

Go to the latest result

lodashMap

jsMap

lodashPushReduce

jsPushReduce

lodashSpreadReduce

jsSpreadReducer

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Complex mapping (version: 3)

Comparing performance of: lodashMap vs jsMap vs lodashPushReduce vs jsPushReduce vs lodashSpreadReduce vs jsSpreadReducer

Created: one year ago by: Registered User

Go to the latest result

lodashMap

jsMap

lodashPushReduce

jsPushReduce

lodashSpreadReduce

jsSpreadReducer

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `lodashMap vs jsMap vs lodashPushReduce vs jsPushReduce vs lodashSpreadReduce vs jsSpreadReducer`