Benchmark: map vs reduce/concat vs reduce/push vs reduce/spread

Script Preparation code:

var object = {
    a: {
        foo: 'bar'
    },
    b: {
        foo: 'bar'
    },
    c: {
        foo: 'bar'
    },
    d: {
        foo: 'bar'
    },
    e: {
        foo: 'bar'
    },
    f: {
        foo: 'bar'
    },
    g: {
        foo: 'bar'
    },
}

Tests:

Array.map()
const array = Object.values(object).map(({ foo }) => foo)
Array.reduce().concat()
const array = Object.values(object).reduce((arr, { foo }) => { return arr.concat(foo); }, []);
Array.reduce().push()
const array = Object.values(object).reduce((arr, { foo }) => { arr.push(foo); return arr }, []);
Array.reduce() spread
const array = Object.values(object).reduce((arr, { foo }) => { return [...arr, foo]; }, []);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.map()
Array.reduce().concat()
Array.reduce().push()
Array.reduce() spread

Fastest: N/A

Slowest: N/A

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Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser/OS: Chrome 104 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Array.map()	4480211.0 Ops/sec
Array.reduce().concat()	943257.8 Ops/sec
Array.reduce().push()	4384686.0 Ops/sec
Array.reduce() spread	2477613.0 Ops/sec

map vs reduce/concat vs reduce/push vs reduce/spread (version: 0)

Comparing performance of: Array.map() vs Array.reduce().concat() vs Array.reduce().push() vs Array.reduce() spread

Created: 2 years ago by: Guest

Jump to the latest result

Array.map()

Array.reduce().concat()

Array.reduce().push()

Array.reduce() spread

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A