/**
 * Solana Wallet Operations
 *
 * Pure functions for signing operations.
 * Extracted from hooks for testability and reusability.
 *
 * CRITICAL: Solana uses Ed25519, NOT keccak256.
 * Always set hashMessage: false when signing.
 */
import type { SolanaTransaction } from './types';
/**
 * Extract message bytes from various Solana transaction formats
 *
 * Supports:
 * - Raw Uint8Array
 * - Object with messageBytes property
 * - Object with serializeMessage() method (legacy Transaction)
 *
 * @param transaction - Transaction in various formats
 * @returns Transaction bytes as Uint8Array
 */
export declare function getTransactionBytes(transaction: SolanaTransaction): Uint8Array;