Benchmark: filter+map vs reduce

Tests:

runFilterAndMapTest
const COLLECTION_LENGTH = 1000; const TEST_ITERATIONS = 100; const getSingleCollection = (collectionLength) => Array.from({ length: collectionLength }, (_, k) => ({ id: k + 1, name: `name of ${k + 1}` })); const runFilterAndMapTest = (collection) => { return collection.filter(sampleObj => sampleObj.id > 50).map(sampleObj => sampleObj.name); }; for (let i = 0; i <= TEST_ITERATIONS; i++) { const collection = getSingleCollection(COLLECTION_LENGTH); runFilterAndMapTest(collection); }
runReduceTest
const COLLECTION_LENGTH = 1000; const TEST_ITERATIONS = 100; const getSingleCollection = (collectionLength) => Array.from({ length: collectionLength }, (_, k) => ({ id: k + 1, name: `name of ${k + 1}` })); const runReduceTest = (collection) => { return collection.reduce((acc, sampleObj) => { if (sampleObj.id > 50) { acc.push(sampleObj.name); } return acc; }, []); }; for (let i = 0; i <= TEST_ITERATIONS; i++) { const collection = getSingleCollection(COLLECTION_LENGTH); runReduceTest(collection); }

Rendered benchmark preparation results:

Previous results

Test case name	Result
runFilterAndMapTest
runReduceTest

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Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36

Browser/OS: Chrome 96 on Linux

Test name	Executions per second
runFilterAndMapTest	128.1 Ops/sec
runReduceTest	119.6 Ops/sec

filter+map vs reduce (version: 0)