Function createUpdateMintAuthorityInstruction

createUpdateMintAuthorityInstruction(
    mintInterface: MintInterface,
    currentMintAuthority: PublicKey,
    newMintAuthority: PublicKey | null,
    payer: PublicKey,
    validityProof: ValidityProofWithContext | null,
    maxTopUp?: number,
): TransactionInstruction
Create instruction for updating a light mint's mint authority. Works for both compressed and decompressed light mints.
Parameters
- mintInterface: MintInterface
  MintInterface from getMintInterface() - must have merkleContext
- currentMintAuthority: PublicKey
  Current mint authority public key (must sign)
- newMintAuthority: PublicKey | null
  New mint authority (or null to revoke)
- payer: PublicKey
  Fee payer public key
- validityProof: ValidityProofWithContext | null
  Validity proof for the compressed light mint (null for decompressed light mints)
- OptionalmaxTopUp: number
  Optional cap on rent top-up (units of 1k lamports; default no cap)
Returns TransactionInstruction
- Defined in v3/instructions/update-mint.ts:116