assertTransaction

Validates a transaction object and returns an error if the transaction is invalid. Different validation functions exist for each transaction type.

Import

import "github.com/ChefBingbong/viem-go/utils/transaction"
import "math/big"

Usage

import "github.com/ChefBingbong/viem-go/utils/transaction"
import "math/big"

tx := &transaction.Transaction{
  Type:                 transaction.TransactionTypeEIP1559,
  ChainId:              1,
  Nonce:                0,
  MaxFeePerGas:         big.NewInt(1000000000),
  MaxPriorityFeePerGas: big.NewInt(100000000),
  Gas:                  big.NewInt(21000),
  To:                   "0x1234512345123451234512345123451234512345",
  Value:                big.NewInt(0),
}

// Assert EIP-1559 transaction
err := transaction.AssertTransactionEIP1559(tx)
if err != nil {
  log.Fatal(err)
}

Returns

• Type: error

Returns nil if the transaction is valid, or an error describing the validation failure.

Parameters

transaction (required)

• Type: *transaction.Transaction

The transaction object to validate.

tx := &transaction.Transaction{
  ChainId:              1,
  MaxFeePerGas:         big.NewInt(1000000000),
  MaxPriorityFeePerGas: big.NewInt(100000000),
  Gas:                  big.NewInt(21000),
  To:                   "0x1234512345123451234512345123451234512345",
}

err := transaction.AssertTransactionEIP1559(tx)

Assertion Functions

AssertTransactionEIP1559

Validates an EIP-1559 transaction:

• Chain ID must be > 0
• To address must be valid (if present)
• MaxFeePerGas must not exceed max uint256
• MaxPriorityFeePerGas must not exceed MaxFeePerGas

AssertTransactionEIP2930

Validates an EIP-2930 transaction:

• Chain ID must be > 0
• To address must be valid (if present)
• Must not have EIP-1559 fee fields
• GasPrice must not exceed max uint256

AssertTransactionEIP4844

Validates an EIP-4844 transaction:

• Validates blob versioned hashes (size and version)
• Also validates as EIP-1559 transaction

AssertTransactionEIP7702

Validates an EIP-7702 transaction:

• Validates authorization list addresses and chain IDs
• Also validates as EIP-1559 transaction

AssertTransactionLegacy

Validates a legacy transaction:

• To address must be valid (if present)
• GasPrice must not exceed max uint256

Common Validations

All transaction types validate:

• Address format (if To is present)
• Fee values don't exceed maximum uint256
• Chain ID is valid (for typed transactions)