getTransactionMessagePriorityFeeLamports

function getTransactionMessagePriorityFeeLamports<TTransactionMessage>(
    transactionMessage,
): bigint | undefined;

Returns the priority fee in lamports currently set on a v1 transaction message, or undefined if none is set.

This reads from the transaction message's config.priorityFeeLamports.

Type Parameters

Type Parameter
`TTransactionMessage` extends `TransactionMessage` & `object`

Parameter	Type	Description
`transactionMessage`	`TTransactionMessage`	The v1 transaction message to inspect.

bigint | undefined

The priority fee in lamports, or undefined if none is set.

const fee = getTransactionMessagePriorityFeeLamports(transactionMessage);
if (fee !== undefined) {
    console.log(`Priority fee: ${fee}`);
}