Run results for: reduce vs map,filter

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0

Browser: Firefox 131

Operating system: Linux

Device Platform: Desktop

Date tested: 27 days ago

Test name	Executions per second
map-filter	11327.6 Ops/sec
reduce	15486.3 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