interface Deno.ServeOptionsOptions which can be set when calling Deno.serve. Type ParametersAddr extends Deno.Addr = Deno.AddrPropertiesoptionalsignal: AbortSignalAn AbortSignal to close the server and all connections. optionalonError: (error: unknown) => Response | Promise<Response>The handler to invoke when route handlers throw an error. optionalonListen: (localAddr: Addr) => voidThe callback which is called when the server starts listening.