/**
 * Service for managing screen wake lock functionality
 *
 * Uses the Web Wake Lock API to keep the device screen awake
 * https://developer.mozilla.org/en-US/docs/Web/API/Screen_Wake_Lock_API
 */
export declare class ScreenService {
    private wakeLock;
    /**
     * Check if the Wake Lock API is supported
     */
    isSupported(): boolean;
    /**
     * Request a wake lock to keep the screen on
     * @returns Promise resolving to true if successful, false otherwise
     */
    requestWakeLock(): Promise<boolean>;
    /**
     * Release the current wake lock
     * @returns Promise resolving to true if released, false if no lock was active
     */
    releaseWakeLock(): Promise<boolean>;
}