How can I use TypeScript to change the mint authority of a token account?

Question

I know it is possible to change the mint authority using solana-spl as shown here. How can I achieve the same thing using TypeScript/JS?

Answer 1

You can use setAuthority from @solana/spl-token and select AuthorityType.MintTokens

https://solana-labs.github.io/solana-program-library/token/js/modules.html#setAuthority

For example, something like this:

  const transactionSignature = await setAuthority(
    connection,
    payer,
    tokenMint,
    payer.publicKey, // current authority goes here (must also be signer)
    AuthorityType.MintTokens,
    newMintAuthority.publickey // new authority goes here
  )

You can also use createSetAuthorityInstruction if you want to just create the instruction and add then to a transaction.

https://solana-labs.github.io/solana-program-library/token/js/modules.html#createSetAuthorityInstruction