bench.js

/* eslint-disable github/array-foreach */
const bytes = new Uint8Array(10_000);

for (let i = 0; i < bytes.length; i++) {
	bytes[i] = Math.floor(Math.random() * 256);
}

const set = new Set();

const ITERATIONS = 100_000;

function buffer() {
	for (let i = 0; i < ITERATIONS; i++) {
		set.add(Buffer.from(bytes).toString("base64"));
	}
}

function forEach() {
	for (let i = 0; i < ITERATIONS; i++) {
		const x = [];
		bytes.forEach(ch => x.push(String.fromCharCode(ch)));
		set.add(Buffer.from(x.join(""), "binary").toString("base64"));
	}
}

function loop() {
	for (let i = 0; i < ITERATIONS; i++) {
		const x = [];
		
		for (const char of bytes) {
			x.push(String.fromCharCode(char));
		}
		
		set.add(Buffer.from(x.join(""), "binary").toString("base64"));
	}
}

console.log(set.size);

console.time("loop");
loop();
console.timeEnd("loop");

console.log(set.size);

console.time("forEach");
forEach();
console.timeEnd("forEach");

console.log(set.size);

console.time("buffer");
buffer();
console.timeEnd("buffer");

console.log(set.size);