Approve

if (needsApproval) {
  await dzap.approve({
    chainId: 42161,
    signer: walletClient,
    sender: '0xUser',
    tokens: [{ address: '0xaf88d065e77c8cC2239327C5EDb3A432268e5831', amount: '1000000' }],
    service: Services.trade,
    mode: ApprovalModes.AutoPermit,
    approvalTxnCallback: async ({ txnDetails, address }) => {
      // txnDetails: { txnHash: string; code: StatusCodes; status: TxnStatus }
      console.log('approval', address, txnDetails.status, txnDetails.txnHash);
    },
  });
}