better-auth/examples/tanstack-example/app/lib/auth-client.ts

import { twoFactorClient } from "better-auth/plugins";
import { createAuthClient } from "better-auth/react";

export const { useSession, signIn, signOut, signUp, twoFactor } =
	createAuthClient({
		baseURL: "http://localhost:3000",
		plugins: [
			twoFactorClient({
				twoFactorPage: "/auth/two-factor",
			}),
		],
	});