solana-program-examples/basics/counter/native/ts/instructions/createIncrementInstruction.ts

import { PublicKey, TransactionInstruction } from '@solana/web3.js';
import { PROGRAM_ID } from '../';

export type IncrementInstructionAccounts = {
    counter: PublicKey,
}
export type IncrementInstructionArgs = {
}

export function createIncrementInstruction(
    accounts: IncrementInstructionAccounts,
    args: IncrementInstructionArgs
): TransactionInstruction {
    return new TransactionInstruction({
        programId: PROGRAM_ID,
        keys: [
            {
                pubkey: accounts.counter,
                isSigner: false,
                isWritable: true
            }
        ],
        data: Buffer.from([0x0])
    })
}