import { Eip712Signer, NobleEd25519Signer } from '@farcaster/core';
export declare function hexToSigner(signerHex: string): NobleEd25519Signer;
export declare function eip712SignerFromMnemonicOrPrivateKey(mnemonicOrPrivateKey: string): Eip712Signer;
export declare function hexToBytes(hex: string): Uint8Array;
export declare function getLatestBlock(): Promise<string>;