Function feesEstimate

utils/utils.ts:39–62

(connection: Connection, payer: Keypair)

}

export async function feesEstimate(connection: Connection, payer: Keypair): Promise<number> {
  const { blockhash } = await connection.getLatestBlockhash();

  const messageArgs: MessageArgs = {
    recentBlockhash: blockhash,
    instructions: [],
    header: {
      numRequiredSignatures: 1,
      numReadonlySignedAccounts: 0,
      numReadonlyUnsignedAccounts: 0,
    },
    accountKeys: [payer.publicKey],
  }

  const message = new Message(messageArgs);
  const feeCalculator = await connection.getFeeForMessage(message);

  if (feeCalculator.value === null) {
    throw new Error("Failed to retrieve fee calculator value");
  }
  let fees = feeCalculator.value * 100;

  return fees;
}

export async function topUp(
  connection: Connection,