Run results for: Map creation in JS

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser: Chrome 125

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
arry first	258646.4 Ops/sec
add to map	436094.5 Ops/sec

Script Preparation code:

function generateAnArray(gvv) {
    let arr = [];
    for(let i = 0; i < 100; i++) {
        arr.push([i + '', {
            id: i,
            value: `value${i}`
        }]);
    }
    return arr;
}

bar = generateAnArray();

Tests:

arry first
function generateArray() { let arr = []; for(let i = 0; i < 100; i++) { arr.push([i + '', { id: i, value: `value${i}` }]); } return arr; } const foo = new Map(generateArray());
add to map
bar.reduce((arr, rr) => arr.set(rr[0], rr), new Map())

Run results for: Map creation in JS

arry first

add to map