base64/hex methods missing from `Uint8Array`

[printfn]

⚙ Compilation target

ESNext

⚙ Library

ESNext

Missing / Incorrect Definition

Uint8Array.fromBase64()
Uint8Array.fromHex()
Uint8Array.prototype.setFromBase64()
Uint8Array.prototype.setFromHex()
Uint8Array.prototype.toBase64()
Uint8Array.prototype.toHex()

These functions are implemented in stable Firefox and in the Safari Technology Preview.

Sample Code

new TextEncoder().encode('Hello World').toBase64()
// "SGVsbG8gV29ybGQ="

Documentation Link

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array/toBase64

https://github.com/tc39/proposal-arraybuffer-base64

[xiBread]

I would argue that support in a beta version does not fully count as "two or more major browser engines."

[RyanCavanaugh]

Yeah, you'll have to wait for this to be widely-supported first. Please open a new issue at that time

[joakim]

I'll just add a simple workaround until it's widely supported:

declare global {
  interface Uint8ArrayConstructor {
    fromBase64: (base64: string) => Uint8Array
    fromHex: (hex: string) => Uint8Array
  }

  interface Uint8Array {
    toBase64: () => string
    toHex: () => string
  }
}

Add to global.d.ts or some other appropriate place.

I haven't added setFromBase64() and setFromHex() as I didn't need it. Just follow my lead if you want those :)

[aryzing]

Seems it's now available in two major engines no? Bun supports this too.

[joakim]

@aryzing Still not in V8, see this issue. I think we'll have to wait for that, as it covers most of the runtimes.

[dontwanttothink]

This feature is supported in Bun, Firefox and Safari. It has exceeded the threshold for inclusion that exists for DOM APIs. It should be added.