class EventEmitterimport { EventEmitter } from "https://deno.land/x/pup@1.0.0-alpha-28/lib/common/eventemitter.ts"; Propertieslisteners: Map<string, Array<EventHandler<any>>>Methodsemit<T>(event: string, eventData?: T)off<T>(event: string, fn: EventHandler<T>)on<T>(event: string, fn: EventHandler<T>)