import { Theme } from './themes';
export interface UseThemeShiftOptions {
    defaultTheme?: string;
    transitionDuration?: number;
    storage?: Storage;
}
export interface CustomTheme extends Theme {
    id: string;
}
export declare function useThemeShift(options?: UseThemeShiftOptions): {
    currentTheme: string;
    setTheme: (themeName: string) => void;
    isTransitioning: boolean;
    availableThemes: {
        [x: string]: Theme | CustomTheme;
    };
    customThemes: Record<string, CustomTheme>;
    addCustomTheme: (theme: CustomTheme) => void;
    removeCustomTheme: (themeId: string) => void;
};