Base64 encoder

This package encodes and decodes Uint8Arrays to and from strings.

There are no dependencies. It does not use atob or buffer. The input for the encoding can be any old array of numbers between 0 and 255 if you like, but the output of the decoding will be a Uint8Array.

The code is written with lots of comments and follows an example from Wikipedia to make it all easier to understand and learn from.

Simple code also usually means performant code, so I suspect this implementation is quite performant as well.

I wrote it as a quick learning project for myself.

Usage

import fs from "fs";
import { encode, decode } from './index.js';

// Buffer with the content of this README.md
const readme_bytes = fs.readFileSync("./README.md");

// Base64 string
const readme_encoded = encode(readme_bytes);

// Uint8Array that equals readme_bytes (except buffer != Uint8Array)
const readme_decoded = decode(readme_encoded);