solana-program-examples/basics/transfer-sol/poseidon/ts-programs/src/transferSol.ts

import { Pubkey, type Result, Signer, SystemAccount, SystemProgram, u64 } from '@solanaturbine/poseidon';

export default class TransferSol {
  static PROGRAM_ID = new Pubkey('BLiyCbPDx54vqpNPQG6A7YAqEM1vRHiFfvReMKC4FFk5');

  // Transferring of SOL using CPI
  transferSolWithCPI(
    payer: Signer, // sender of the SOL
    recipient: SystemAccount, // receiver of transferred SOL
    amount: u64, // amount to be transferred
  ): Result {
    // Invoke the SystemProgram's Transfer instruction
    // Parameters: from, to, amount
    SystemProgram.transfer(payer, recipient, amount);
  }
}