class HandledEvent extends Eventimport { HandledEvent } from "https://deno.land/x/acorn@0.0.7/mod.ts"; ConstructorsnewHandledEvent(eventInitDict: HandledEventInit)Propertiesreadonlymeasure: PerformanceMeasurereadonlyrequest: Requestreadonlyresponse: Responsereadonlyroute: Route | undefined