export declare const localStorageKeyForThemePreference = "c8y-theme-preference";
export declare function getThemePreference(): string;
export declare function setThemePreference(preference: string): void;
export declare function applyTheme(newThemePreference: string | null): void;
export declare function applyThemePreferenceAndListenForChanges(): void;
/**
 * Will revert back to the light theme if the dark theme is not available.
 * @param options ApplicationOptions
 */
export declare function applyOptionsToTheming(options: any): void;