`onBug()`

Environment: server.

To track bugs, we use onBug():

import { onBug } from 'telefunc'
 
onBug((err) => {
  // ...
})

This allows us, for example, to install the tracker code of some tracking service (Sentry, Bugsnag, Rollbar, ...).

onBug() is called:

When a telefunction throws an error that is not Abort(). (In other words, our telefunction has a bug.)
When Telefunc throws an error. (In other words, Telefunc has a bug).

throw Abort() does not trigger onBug(). It's expected that throw Abort() may be called (when some third-party erroneously calls a telefunction). In other words, throw Abort() isn't a bug.