Run results for: Reduce with spread vs concat vs push

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:105.0) Gecko/20100101 Firefox/105.0

Browser: Firefox 105

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

var nums = Array.from({length: 100}, (_, i) => i + 1);

var double = (x) => x * 2;

Tests:

Reduce with spread
const map = function(transform) { return function(acc, curr) { const mappedValue = transform(curr) return [...acc, mappedValue] } } nums.reduce(map(double), [])
Reduce with concat
const map = function(transform) { return function(acc, curr) { const mappedValue = transform(curr) return acc.concat(mappedValue) } } nums.reduce(map(double), [])
Reduce with push
const map = function(transform) { return function(acc, curr) { const mappedValue = transform(curr) acc.push(mappedValue) return acc } } nums.reduce(map(double), [])