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import { EventType, Handler } from "../../vendor/mitt/src/index.js";/** * @public */export { EventType, Handler };/** * @public */export interface CommonEventEmitter {  on(event: EventType, handler: Handler): CommonEventEmitter;  off(event: EventType, handler: Handler): CommonEventEmitter;  addListener(event: EventType, handler: Handler): CommonEventEmitter;  removeListener(event: EventType, handler: Handler): CommonEventEmitter;  emit(event: EventType, eventData?: unknown): boolean;  once(event: EventType, handler: Handler): CommonEventEmitter;  listenerCount(event: string): number;  removeAllListeners(event?: EventType): CommonEventEmitter;}/** * The EventEmitter class that many Puppeteer classes extend. * * @remarks * * This allows you to listen to events that Puppeteer classes fire and act * accordingly. Therefore you'll mostly use {@link EventEmitter.on | on} and * {@link EventEmitter.off | off} to bind * and unbind to event listeners. * * @public */export declare class EventEmitter implements CommonEventEmitter {  private emitter;  private eventsMap;  /**   * @internal   */  constructor();  /**   * Bind an event listener to fire when an event occurs.   * @param event - the event type you'd like to listen to. Can be a string or symbol.   * @param handler - the function to be called when the event occurs.   * @returns `this` to enable you to chain method calls.   */  on(event: EventType, handler: Handler): EventEmitter;  /**   * Remove an event listener from firing.   * @param event - the event type you'd like to stop listening to.   * @param handler - the function that should be removed.   * @returns `this` to enable you to chain method calls.   */  off(event: EventType, handler: Handler): EventEmitter;  /**   * Remove an event listener.   * @deprecated please use {@link EventEmitter.off} instead.   */  removeListener(event: EventType, handler: Handler): EventEmitter;  /**   * Add an event listener.   * @deprecated please use {@link EventEmitter.on} instead.   */  addListener(event: EventType, handler: Handler): EventEmitter;  /**   * Emit an event and call any associated listeners.   *   * @param event - the event you'd like to emit   * @param eventData - any data you'd like to emit with the event   * @returns `true` if there are any listeners, `false` if there are not.   */  emit(event: EventType, eventData?: unknown): boolean;  /**   * Like `on` but the listener will only be fired once and then it will be removed.   * @param event - the event you'd like to listen to   * @param handler - the handler function to run when the event occurs   * @returns `this` to enable you to chain method calls.   */  once(event: EventType, handler: Handler): EventEmitter;  /**   * Gets the number of listeners for a given event.   *   * @param event - the event to get the listener count for   * @returns the number of listeners bound to the given event   */  listenerCount(event: EventType): number;  /**   * Removes all listeners. If given an event argument, it will remove only   * listeners for that event.   * @param event - the event to remove listeners for.   * @returns `this` to enable you to chain method calls.   */  removeAllListeners(event?: EventType): EventEmitter;  private eventListenersCount;}