Provide feedback on Decoding v4 third party block with a biscuit-auth v5 backend

[CleverAkanoa]

I don't know if its the right repository.

Description

The biscuitsec.org provides a web-component to decode existing Biscuit, unfortunately a breaking changes in biscuit-auth/biscuit@c87cbb5 forbids to decode v4 Biscuit.

On the website side, a "Please enter a base64-encoded token" is thrown but in the console the real error is displayed.

called `Result::unwrap()` on an `Err` value: Format(DeserializationError("deserialization error: third-party blocks must be v5"))

This error should be shown to users.

[divarvel]

Token parsing happens here https://github.com/biscuit-auth/biscuit-component-wasm/blob/main/src/parse_token.rs#L29 the parsing error is returned as is.

So the issue is probably in https://github.com/biscuit-auth/biscuit-web-components/blob/main/src/bc-token-printer.ts
this is good news because this only requires changing the TS side of things.

To start a dev server, you can run npm run serve, this should get you started.

[CleverAkanoa]

Great, I'll try to fix it, thanks for pointers