Benchmark: Test spreads - MeasureThat.net

Script Preparation code:

const items = (new Array(10000).fill(0)).map((_, idx) => ({
    id: idx,
    someProp: new Array(),
    also: false,
    maybe: 1,
    hmm: {
        id: idx + 1,
        id2: idx + 1
    }
}))

Tests:

Test array spread
const innerIds = items.reduce((acc, item) => [...acc, item.hmm.id, item.hmm.id2], []);
Test array concat
const innerIds = items.reduce((acc, item) => acc.concat(item.hmm.id, item.hmm.id2), []);
Test array push
const innerIds = items.reduce((acc, item) => { acc.push(item.hmm.id); acc.push(item.hmm.id2); return acc}, []);
Test object spread
const objectSet = items.reduce((acc, item) => ({...acc, [item.id]: item}), {});
Test object assign
const objectSet = items.reduce((acc, item) => Object.assign(acc, {[item.id]: item}), {});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Test array spread
Test array concat
Test array push
Test object spread
Test object assign

Fastest: N/A

Slowest: N/A

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Test spreads (version: 0)

Comparing performance of: Test array spread vs Test array concat vs Test array push vs Test object spread vs Test object assign

Created: one year ago by: Guest

Jump to the latest result

Test array spread

Test array concat

Test array push

Test object spread

Test object assign

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

No previous run results