fileTypeFromBase64

[phaux]

We need to know the mime type before we can parse it using fetch data url.

const type = fileTypeFromBase64(base64string) // add this

const blob = await fetch(`data:${type.mime};base64,${base64string}`)
    .then(resp => resp.blob())

[sindresorhus]

You can easily convert Base64 to a Buffer. I don't think this is common of enough need to support built-in.

Buffer.from(b64string, 'base64');

[phaux]

But Buffer.from is node only :/

[sindresorhus]

https://stackoverflow.com/questions/21797299/convert-base64-string-to-arraybuffer

[phaux]

Yeah I know, but the fetch data url method is async and better on front-end where you want consistent 60fps. Just sayin.

What alternatives do we have according to that SO post:

• atob which is for parsing base64 encoded strings, not any bytes.
• Buffer.from - node only.
• Use a library.