Send Batch Transactions

A batch refers to a group of calls inside a single user operation. This can be an approve and send transaction in one call. The executeBatch() method is used.

Parameter	Type	Status	Description
to	address	required	The address where the user want to send Tokens.
value	number	required	The amount of Tokens the user is sending
data	Function		Encoded Function Data for Smart Contract Methods

Example of approve and transfer in a single batch

Web

const approveCallData = ContractUtils.encodeERC20ApproveCall(
  spender,
  amount
) as unknown as Uint8Array;

const calls = [
  {
    to: tokenAddress,
    value: BigInt(0),
    data: approveCallData,
  },
  {
    to: spender,
    value: BigInt(0),
    data: callData,
  },
];

const res = await fuseSDK.executeBatch(calls, txOptions);
console.log(`UserOpHash: ${res?.userOpHash}`);
console.log("Waiting for transaction...");

const receipt = await res?.wait();
console.log("Transaction Hash:", receipt?.transactionHash);

Flutter

final tokenAddress = EthereumAddress.fromHex('TOKEN_ADDRESS');
final recipientAddress = EthereumAddress.fromHex('RECIPIENT_ADDRESS');
final amountInWei = BigInt.parse('AMOUNT_IN_WEI');

final res = await fuseSDK.executeBatch(
  [
    // Approve ERC20 Token call
    Call(
      to: tokenAddress,
      value: BigInt.zero,
      data: ContractsUtils.encodeERC20ApproveCall(
        tokenAddress,
        recipientAddress,
        amountInWei,
      ),
    ),
    // Transfer ERC20 Token call
    Call(
      to: tokenAddress,
      value: BigInt.zero,
      data: ContractsUtils.encodeERC20TransferCall(
        tokenAddress,
        recipientAddress,
        amountInWei,
      ),
    ),
  ],
);