prependTransactionMessageInstruction

prependTransactionMessageInstruction<TTransactionMessage, TInstruction>(instruction, transactionMessage): PrependTransactionMessageInstructions<TTransactionMessage, [TInstruction]>

Given an instruction, this method will return a new transaction message with that instruction having been added to the beginning of the list of existing instructions.

Type Parameters

Parameters

Returns

PrependTransactionMessageInstructions<TTransactionMessage, [TInstruction]>

See

prependTransactionInstructions if you need to prepend multiple instructions to a transaction message.

Example

import { address } from '@solana/addresses';
import { prependTransactionMessageInstruction } from '@solana/transaction-messages';
 
const memoTransaction = prependTransactionMessageInstruction(
    {
        data: new TextEncoder().encode('Hello world!'),
        programAddress: address('MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr'),
    },
    tx,
);