Run results for: map vs reduce concat

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

map

7K/s

reduce concat

3/s

View exact numbers

Test name	Executions per second
✓ map	7,351 Ops/sec
reduce concat	3 Ops/sec

Script Preparation code:

function generateTestArray() {
    const result = [];
    for (let i = 0; i < 10000; ++i) {
        result.push(i);
    }
    return result;
}

Tests:

map
const testArray = generateTestArray() testArray.map(i => ({i}))
reduce concat
const testArray = generateTestArray() testArray.reduce((acc, i) => acc.concat({i}), [])