Remove listener instead of stopping feed

listener.js

const nano = require("nano")("http://localhost:5984");
const name = "test";

nano.db.destroy(name, () => {
  nano.db.create(name, () => {
    const db = nano.use(name);
    const feed = db.follow({ since: "now" }, () => {});

    // add doc every second
    const timer = setInterval(() => {
      db.insert({}, (err, body) =>
        console.log(err ? "ERROR" : "ADD " + body.id)
      );
    }, 1000);

    const handler = change => console.log("GOT " + change.id);

    // start listener after 5s
    setTimeout(() => feed.on("change", handler), 5000);
    // stop listener after 10s
    setTimeout(() => {
      feed.removeListener("change", handler);
      clearInterval(timer);
    }, 10000);
  });
});

This sort of works but something keeps some reference that prevents the app from exiting normally ...

$ node test2.js
ADD ae1b3a77338a73da2f3cb4cf162837fb
ADD ae1b3a77338a73da2f3cb4cf16283a37
ADD ae1b3a77338a73da2f3cb4cf1628435d
ADD ae1b3a77338a73da2f3cb4cf1628463f
ADD ae1b3a77338a73da2f3cb4cf162851c8
GOT ae1b3a77338a73da2f3cb4cf162851c8
ADD ae1b3a77338a73da2f3cb4cf16285874
GOT ae1b3a77338a73da2f3cb4cf16285874
ADD ae1b3a77338a73da2f3cb4cf162861ec
GOT ae1b3a77338a73da2f3cb4cf162861ec
ADD ae1b3a77338a73da2f3cb4cf16286752
GOT ae1b3a77338a73da2f3cb4cf16286752
ADD ae1b3a77338a73da2f3cb4cf16287407
GOT ae1b3a77338a73da2f3cb4cf16287407




^C