import { SignMessageFn } from '../types.js';
/**
 * Sign a message using either a SignMessageFn or a secret key.
 *
 * @param message - The message to sign
 * @param signerOrKey - Either a SignMessageFn (from wallet standard) or a Uint8Array secret key
 * @returns The signature as Uint8Array
 */
export declare function signMessage(message: string, signerOrKey: Uint8Array | SignMessageFn): Promise<Uint8Array>;
//# sourceMappingURL=signMessage.d.ts.map