Run results for: reduce vs map,filter

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36 Edg/129.0.0.0

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
map-filter	2298.8 Ops/sec
reduce	838.9 Ops/sec

Script Preparation code:

a = [];
for (let i = 0; i < 10000; i++) {
    a.push(Number(i) / 1000 * 1000);
}
var mapping = x => x % 5 !== 0 ? x : undefined;
var filtering = x => x;
var reducing = (acc, x) => {
    const value = mapping(x);
    if (filtering(value)) acc.push(value);
    return acc;
}

Tests:

map-filter
a.map(mapping).filter(filtering);
reduce
a.reduce(reducing,[]);

Run results for: reduce vs map,filter

map-filter

reduce