/**
 * Hex encoding and decoding helpers.
 *
 * @module
 */
/**
 * Converts a `Uint8Array` to a lowercase hex string.
 *
 * @returns hex string with two characters per byte
 */
export declare const to_hex: (bytes: Uint8Array) => string;
/**
 * Decodes a hex string to a `Uint8Array`.
 * Whitespace is stripped before parsing. Returns `null` for invalid hex.
 *
 * @param hex - hex string to decode (case-insensitive, whitespace allowed)
 * @returns decoded bytes, or `null` if the input is not valid hex
 */
export declare const from_hex: (hex: string) => Uint8Array | null;
//# sourceMappingURL=hex.d.ts.map