Filter vs Reduce

gistfile1.js

function letThemReduce(count) {
	let bigData = [];

	for (let i = 0; i < count; i++) {
		bigData[i] = i;
	}

	console.log('Data count:', bigData.length);
	// ///////////////////////////////////////////////////////////////////// FILTER MAP START HERE
	console.time('map');
	let filterBigData = bigData.filter((item) => {
		return item % 2 === 0;
	}).map((item) => {
		return item * 2;
	});
	console.timeEnd('map');

	// ///////////////////////////////////////////////////////////////////// REDUCE START HERE
	console.time('reduce');
	let reduceBigData = bigData.reduce((acc, item) => {
		if (item % 2 === 0) {
			acc.push(item * 2);
		}

		return acc;
	}, []);
	console.timeEnd('reduce');
}

function runIt() {
	for (i = 1; i < 4; i++) {
		letThemReduce(9999 * (i * 111));
	}
}

runIt();