@yuhere/js-base64

Base64 encoding/decoding in pure JS, converted to TypeScript with ES module output.

Forked from github.com/beatgammit/base64-js.

Many browsers already have base64 encoding/decoding functionality, but it is for text data, not all-purpose binary data.

Sometimes encoding/decoding binary data in the browser is useful, and that is what this module does.

install

With npm do:

npm install @yuhere/js-base64

usage

import { toByteArray, fromByteArray, byteLength } from '@yuhere/js-base64';

methods

• toByteArray(b64: string): Uint8Array — Decode a base64 string to a byte array. Supports both standard (+, /) and URL-safe (-, _) characters.
• fromByteArray(uint8: Uint8Array): string — Encode a byte array to a base64 string.
• byteLength(b64: string): number — Returns the number of bytes a base64 string encodes to. Useful for pre-allocating buffers.

build

npm run build

Runs vite build (JS + sourcemaps) then tsc (type declarations). Output in lib/.

test

npm test

Runs Vitest tests (Node environment).

npm run test:watch     # watch mode
npm run test:coverage  # with Istanbul coverage report

benchmark

npm run bench

license

MIT