Class

worker-configuration.d.ts:666–666

 * [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget)
 */
declare class EventTarget<EventMap extends Record<string, Event> = Record<string, Event>> {
    constructor();
    /**
     * Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.