import { ByteArray } from '../types.js';
/**
 * Converts a byte array containing hexadecimal ASCII characters to raw bytes.
 * Each pair of hex character bytes is converted to a single byte value.
 *
 * @param hex - The byte array containing hex character codes.
 * @returns A byte array with decoded values.
 *
 * @example
 * ```typescript
 * // 'FF' as bytes (0x46, 0x46) becomes 0xFF
 * hexBytesToBytes(new Uint8Array([70, 70])) // Returns Uint8Array([255])
 * ```
 */
export declare function hexBytesToBytes(hex: ByteArray): ByteArray;