[suggestion] Better error reporting on the client side.

[trusktr]

I see errors like this which are a pain to track:

Exception from Tracker afterFlush function:        debug.js:41
ReferenceError: Cards is not defined               debug.js:41

Errors of this form, from Tracker afterFlush, are always from line "debug.js:41", which is completely not helpful.

In the meantime, I'll keep laboriously hunting and hunting for the source of the error.

[rclai]

I also suffer from this.

[ghost]

Reproduce? I get this:

So I see the stack trace.

[trusktr]

@sanjo Interesting. It seems to have a stack trace only sometimes:

[rclai]

It's because @trusktr is using Blaze and @sanjo is using React right?

It seems like React has better stack traces from what I see.

[ghost]

When I use the starter app (meteor create stack-trace-autorun).

And use my reproduce trigger code:

if (Meteor.isClient) {
  Tracker.autorun(function () {
    if (Session.get('throw')) {
      Cards.foo();
    }
  });
}

And trigger it with Session.set('throw', true), then I get also the stack trace:

Exception from Tracker recompute function:      debug.js:41
ReferenceError: Cards is not defined
    at stack-trace-autorun.js?087898c695bca84a46fc4ec3a4cad37d8878b275:5
    at Tracker.Computation._compute (tracker.js:294)
    at Tracker.Computation._recompute (tracker.js:313)
    at Object.Tracker._runFlush (tracker.js:452)
    at onGlobalMessage (setimmediate.js:102)

I use Google Chrome 44.

So still no reproduce :/

[rclai]

I think it needs to be in the context of using Blaze. I'll see what I can do.

[stubailo]

Yeah we definitely would need a reproduction to fix this. @trusktr when does it happen for you? Can you post an app where it happens here?

[dearlordylord]

I found that can reproduce it with some older version of Meteor and packages. I'm trying to reproduce same issue with new application with same packages (but never versions), no 'luck' so far.

[dearlordylord]

Issue is meteorhacks:kadira package _debug function overwrite. It removes stack trace, leaving only error message. Related bug is meteorhacks/kadira#193

Reproduced here https://github.com/Firfi/meteor-tracker-kadira-bug-reproduction

[dearlordylord]

It is fixed in Kadira.

[stubailo]

@Firfi thanks for checking that out! Any luck reproducing it without kadira?

[dearlordylord]

No luck reproducing it without.

[stubailo]

OK I see no reproductions after 3 people tried, going to close it then.