this.mount loading/error substates generation.

[nathanhammond]

We need the behavior of creating loading/error substates as peers to the engine when using this.mount inside of an application's router.js. The end result will be similar to the implementation here:
https://github.com/emberjs/ember.js/blob/master/packages/ember-routing/lib/system/dsl.js#L44-L47

/cc @knownasilya

[knownasilya]

Will try to look at it this week. Thanks for the link!

[trentmwillis]

@knownasilya have you had any chance to look into this? If not, would you mind if I picked it up?

[knownasilya]

Go ahead, I'm swamped:)

[trentmwillis]

Will take care of it then

[mydea]

Should this already work? In my app, using [email protected] & [email protected], loading & error substates do not seem to work for a routeable engine.

[nathanhammond]

@mydea Can you open a failing test case against this repo as a new issue?

[trentmwillis]

@mydea to answer your question, it should work, but substates seem to be rather finicky so it could very well be something was missed.

[andreamancuso]

@mydea Sorry to trouble you, did you manage to get the loading sub-states working on your engines? I tried several combinations to no avail

[mydea]

Sadly, no - see #193

[nathanhammond]

@mydea @andreamancuso We've reduced it to a simple reproduction, it's all set for one of you to dive in and solve it! 😜 (Yes, this is the "PRs accepted" response, but it's not something we're presently trying to solve for at LI and so it's not on the to-do list yet.)

[knownasilya]

@nathanhammond where is this reproduction?

[nathanhammond]

@knownasilya #193 (comment)