getTransactionType

Determines the transaction type based on the transaction fields. Returns the transaction type string.

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{
  MaxFeePerGas: big.NewInt(1000000000),
}

txType, err := transaction.GetTransactionType(tx)
if err != nil {
  log.Fatal(err)
}
fmt.Printf("Type: %s
", txType)
// Type: eip1559

Returns

• Type: (transaction.TransactionType, error)

The transaction type: "legacy", "eip2930", "eip1559", "eip4844", or "eip7702".

Parameters

transaction (required)

• Type: *transaction.Transaction

The transaction object to analyze.

tx := &transaction.Transaction{
  MaxFeePerGas: big.NewInt(1000000000),
}

txType, _ := transaction.GetTransactionType(tx)

Type Detection Logic

The transaction type is determined in the following order:

1. Explicit Type: If tx.Type is set, it's returned directly
2. EIP-7702: If AuthorizationList is present
3. EIP-4844: If blob-related fields are present (Blobs, BlobVersionedHashes, MaxFeePerBlobGas, Sidecars)
4. EIP-1559: If MaxFeePerGas or MaxPriorityFeePerGas is present
5. EIP-2930: If GasPrice and AccessList are present
6. Legacy: If GasPrice is present without AccessList
7. Error: If none of the above conditions are met

Functions

GetTransactionType

Returns the transaction type:

txType, _ := transaction.GetTransactionType(tx)

MustGetTransactionType

Returns the transaction type or panics:

txType := transaction.MustGetTransactionType(tx)