import { LitElement } from 'lit';
export type Constructor<T = {}> = new (...args: any[]) => T;
export type ThemePreferenceOption = 'light' | 'dark';
export declare class ThemePreferenceInterface {
    themePreference: 'light' | 'dark';
}
export declare const ThemePreference: <T extends Constructor<LitElement>>(superClass: T) => Constructor<ThemePreferenceInterface> & T;
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