/**
 *  By using this `CustomElement` interface instead of `HTMLElement`, we avoid
 *  having the generated typings include most DOM API already provided by
 *  TypeScript. This is particularly useful since different versions of
 *  TypeScript may have different DOM API typings (e.g. TS 3.0.3 and TS 3.1.1).
 *  The required `isConnected` property is included to avoid the following
 *  TypeScript error:
 *      Type 'HTMLElement' has no properties in common with type 'CustomElement'.
 */
export interface CustomElement {
    connectedCallback(): void;
    disconnectedCallback?(): void;
    dispatchEvent(event: Event): boolean;
    addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
    removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
    removeEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions): void;
    readonly isConnected: boolean;
}