Register a Farcaster FID and Signer

registerFidAndSigner.ts

import { createThirdwebClient, simulateTransaction } from "thirdweb";
import { sendAndConfirmTransaction } from "thirdweb/transaction";
import { privateKeyToAccount } from "thirdweb/wallets";
import {
	createEd25519Keypair,
	registerFidAndSigner,
} from "thirdweb/extensions/farcaster";
import { optimism } from "thirdweb/chains";

const ANVIL_PRIVATE_KEY_A =
	"0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80" as const;
const ANVIL_PRIVATE_KEY_B =
	"0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d" as const;
const RECOVERY_ADDRESS = "0x70997970C51812dc3A010C7d01b50e0d17dc79C8" as const;

const client = createThirdwebClient({
	secretKey: "TEST",
});

const appAccount = privateKeyToAccount({
	client,
	privateKey: ANVIL_PRIVATE_KEY_A,
});

const userAccount = privateKeyToAccount({
	client,
	privateKey: ANVIL_PRIVATE_KEY_B,
});

const signer = await createEd25519Keypair();

const _registerFidAndSigner = registerFidAndSigner({
	client,
	chain: optimism,
	recoveryAddress: RECOVERY_ADDRESS,
	appAccount,
	userAccount,
	signerPublicKey: signer.publicKey,
});

const userFid = await simulateTransaction({
	transaction: _registerFidAndSigner,
	account: appAccount,
});

const registerFidAndSignerResult = await sendAndConfirmTransaction({
	transaction: _registerFidAndSigner,
	account: appAccount,
});

console.log(
	`Successfully registered an FID and signer for account ${userAccount.address} | User FID:`,
	userFid
);