Interface EventTarget

interface EventTarget {
    addEventListener<K extends keyof HTMLElementEventMap>(
        type: K,
        handler: EventHandler<K>,
        options?: boolean | AddEventListenerOptions,
    ): void;
    removeEventListener<K extends keyof HTMLElementEventMap>(
        type: K,
        listener: EventHandler<K>,
        options?: boolean | EventListenerOptions,
    ): void;
}