What is the expected argument for Solana Extension signMessage function?

[jp30566347]

✅ Prerequisites

• [x] Did you perform a cursory search of open issues? Is this question already asked elsewhere?
• [x] Are you reporting to the correct repository (magic-sdk)?

❓ Question

Why the signMessage function always throws this error?

 [Error: Magic RPC Error: [-32603] Internal error: unexpected type, use Uint8Array]

I've been trying to invoke it using a string as well as a Uint8Array but no luck. The Uint8Array is created from tweetnacl-ts lib's decodeUTF8 function.

🌎 Environment

Software	Version(s)
magic-sdk	"@magic-sdk/react-native": "^10.0.0",
solana extension	"@magic-ext/solana": "^5.0.0",
Browser	NA
npm	8.18.0
Operating System	MacOS 12.5.1

[am-hernandez]

Hello @jp-melanson , thank you for reporting this issue. The expected argument is Uint8Array. Here is a working code snippet:

const signAndVerify = async () => {
    const message = "Hello";
    const encodedMsg = decodeUTF8(message);
    const signature = await magic.solana.signMessage(encodedMsg);

    const verifiedMsg = nacl.sign.detached.verify(
      encodedMsg,
      signature,
      base58_to_binary(userMetadata.publicAddress)
    );
    console.log("Sig verified:", verifiedMsg);
  };

You may also check out this working Codesandbox demo.