[Feature Request] Consider publicly exposing Base64UrlEncoder.Decode(ReadOnlySpan<char>, Span<byte>)

[paulomorgado]

This can be extremely useful for decoding large payloads.

Base64UrlEncoder.Encode(ReadOnlySpan<byte>, Span<char>) is public but Base64UrlEncoder.Decode(ReadOnlySpan<char>, Span<byte>) is not.

Making Base64UrlEncoder.Decode(ReadOnlySpan<char>, Span<byte>) public would make the library more complete.

[keegan-caruso]

Hello,

Base64URL support is targeting net9 for support in the runtime:

dotnet/runtime#1658

We would rather not add this method to the public API when it will be handled at the runtime level.

[keegan-caruso]

Please open again if needed.