@leichtgewicht/base64-codec

A javascript-only (esm/cjs) base64 codec that is [abstract-encoding][] compatible,
well-tested and pretty efficient. Bonus: It doesn't use Nodejs' Buffer object
and comes with typescript types.

[abstract-encoding]: https://github.com/mafintosh/abstract-encoding

Usage

``js
import { base64 } from '@leichtgewicht/base64-codec' // require works too!

const str = 'AA=='
const bytes = base64.encode(
str,
new Uint8Array(base64.encodingLength(str)), // own buffer supplied, optional
0 // offset, at which to write the str, optional
)
str === base64.decode(bytes, 0, bytes.length)
`

URL Support

Use base64URL for de-/encoding for the URL variant of base64.

`js
import { base64URL } from '@leichtgewicht/base64-codec'
``

Concatenated Buffer

For performance reasons, this codec does not support concatenated
base64 strings.

If you need to encode concatenated strings, split them before passing them to this codec.

Why?

There are plenty of base64 implementations on NPM, but when looking into
them there was none with cjs/esm support that offered positional encoding
and bringing one owns buffer.

License

MIT