Function errEventHandler

lib/server.js:282–286

(err)

    const { promise, resolve, reject } = PonyPromise.withResolvers()

    const errEventHandler = (err) => {
      cleanup()
      this[kState].listening = false
      reject(err)
    }
    const listeningEventHandler = () => {
      cleanup()
      this[kState].listening = true