export declare const encoder: TextEncoder;
/**
 * Convert a single character to its Ctrl+char byte representation.
 * For a-z returns 0x01–0x1a, for special chars returns the standard mapping.
 * Returns null if the character has no Ctrl equivalent.
 */
export declare function ctrlCharToByte(char: string): Uint8Array | null;
/**
 * Encode a keyboard event into the byte sequence expected by the terminal.
 * Returns null if the event should not be forwarded.
 */
export declare function keyToBytes(e: KeyboardEvent, appCursor: boolean): Uint8Array | null;
//# sourceMappingURL=keyboard.d.ts.map