import type { PlatformTheme } from '../../theme/platform-theme.js';
type ColorSchemeName = import('react-native').ColorSchemeName;
export type ThemeMode = 'light' | 'dark' | 'system';
export type FontSize = 'small' | 'medium' | 'large';
export declare class RNThemeService implements PlatformTheme {
    private currentTheme;
    private currentFontSize;
    private listeners;
    private appearanceListener;
    private initialized;
    constructor();
    private ensureInitialized;
    private initializeAppearanceListener;
    private notifyListeners;
    applyTheme(theme: ThemeMode): void;
    applyFontSize(fontSize: FontSize): void;
    getCurrentTheme(): ThemeMode;
    getResolvedTheme(): 'light' | 'dark';
    getSystemTheme(): ColorSchemeName;
    getCurrentFontSize(): FontSize;
    getFontSizeMultiplier(): number;
    watchSystemTheme(callback: (theme: ThemeMode) => void): () => void;
    isDarkMode(): boolean;
    dispose(): void;
}
export declare function getThemeService(): RNThemeService;
export declare function initializeThemeService(service?: RNThemeService): RNThemeService;
export declare function resetThemeService(): void;
export declare const rnThemeService: RNThemeService;
export {};
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