Subscribe timer

[MidoMiddle]

async () => {
  setInterval(() => {
    const stats = lib.resmon.getStatistics();
    context.client.emit('example/resmon', stats);
  }, config.resmon.interval);
  return { subscribed: 'resmon' };
};

In this case, if we reload page, we have error:

10:37:21  W3   error   TypeError: Cannot read property 'connection' of undefined
  Client.emit (/node_modules/metacom/lib/channel.js:75:18)
  Timeout._onTimeout (/application/api/example.1/subscribe.js:10:20)
  listOnTimeout (internal/timers.js:554:17)
  processTimers (internal/timers.js:497:7)

We can add try/catch to fix timer:

async () => {
  const timer = setInterval(() => {
    const stats = lib.resmon.getStatistics();
    try { context.client.emit('example/resmon', stats); }
    catch (e) { clearInterval(timer) };
  }, config.resmon.interval);
  return { subscribed: 'resmon' };
};

[tshemsedinov]

Yes, you can make PR with this quick patch and issue to implement 'disconnect' event and example how to use this event with subscription.

[tshemsedinov]

You didn't provide file names and location, I can't reproduce this, and even understand. I think this is not relevant as of today, a lot has already changed, release 3.0 is coming next week, try to use it.