Object entries performance test

run.ts

import * as R from "remeda";

const generateInput = (amountOfEntries: number) => {
	const entries = Array.from<never[], [string, string]>(
		{ length: amountOfEntries },
		(_, index) => [`KEY_${index}`, `VALUE_${index}`]
	);

	return Object.fromEntries(entries);
};

const withDefault = (input: Record<string, string>) =>
	Object.fromEntries(Object.entries(input));

const withRemeda = (input: Record<string, string>) =>
	R.pipe(input, R.toPairs, R.fromPairs);

const withReduce = (input: Record<string, string>) =>
	Object.entries(input).reduce(
		(acc, [key, value]) => ({ ...acc, [key]: value }),
		{}
	);

(() => {
	const input = generateInput(10_000);

	console.time("withDefault");
	withDefault(input);
	console.timeEnd("withDefault");

	console.time("withRemeda");
	withRemeda(input);
	console.timeEnd("withRemeda");

	console.time("withReduce");
	withReduce(input);
	console.timeEnd("withReduce");
})();