ts-bos-base64

A pure-TypeScript port of BabyOS's algo_base64.c — a compact RFC 4648 Base64 encoder/decoder.

• No native dependencies. Browser- and Node-compatible.
• Tested against the RFC 4648 §10 reference vectors and a 0..255 binary round-trip.

Install

npm install @scott/bos-base64

Usage

import { encode, decode, decodeToString } from '@scott/bos-base64';

encode('Hello, world!');                 // 'SGVsbG8sIHdvcmxkIQ=='
decodeToString('SGVsbG8sIHdvcmxkIQ==');  // 'Hello, world!'

const bytes = decode('AAECAwQFBgc=');    // Uint8Array of decoded bytes

decode returns null if the input is malformed (length not a multiple of 4, or any illegal character).

API

• encode(input: Uint8Array | string): string
• decode(input: string): Uint8Array | null
• decodeToString(input: string): string | null

Upstream

Originally from notrynohigh/BabyOS (MIT, copyright 2020 Bean).

License

MIT — see LICENSE.