import { LitElement } from 'lit';
export type UnpackCustomEvent<T> = T extends CustomEvent<infer U> ? U : never;
export declare class MduiElement<E> extends LitElement {
    /**
     * 触发自定义事件。若返回 false，表示事件被取消
     * @param type
     * @param options 通常只用到 cancelable 和 detail；bubbles、composed 统一不用
     */
    protected emit<K extends keyof E, D extends UnpackCustomEvent<E[K]>>(type: K, options?: CustomEventInit<D>): boolean;
}
export interface MduiElement<E> {
    addEventListener<K extends keyof M, M extends E & HTMLElementEventMap>(type: K, listener: (this: this, ev: M[K]) => unknown, options?: boolean | AddEventListenerOptions): void;
    addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
    removeEventListener<K extends keyof M, M extends E & HTMLElementEventMap>(type: K, listener: (this: this, ev: M[K]) => unknown, options?: boolean | EventListenerOptions): void;
    removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
}