[BUGFIX beta] improve fn & on undefined callback message

[patricklx]

include parent and property key in the message

[rwjblue]

Generally seems good, I think that CI is failing due to some testing the exact assertion message. Also, in a recent PR @chancancode added a ref.debug method that we might be able to leverage here instead of manually digging into callbackRef.propertyKey.

[patricklx]

Hi, I was still not quite happy with the debug function since it gave me not eough information on where the error is.
But I found there is a debug stack for the templates, So I add that now to the error message.
So now we would have a template stack + helper debug message.

[pzuraq]

Can you provide a description of what information this adds to the debug output? It seems to be serializing the full debug stack and adding it to any errors that occur, it'd be useful to see an example of what the output looks like to determine how helpful it would be

[rwjblue]

@chancancode would mind taking a look at this one also? It seems related to recent work that you've done...

[patricklx]

Hi, the description will look like this:

Uncaught Error: Assertion Failed: You must pass a function as the `fn` helpers first argument, you passed undefined
  in -> component: ui/routes/posts/details/posts-details
       ⤤ template: client/src/ui/routes/posts/details/template.hbs
       ⤤ template: packages/@ember/-internals/glimmer/lib/templates/outlet.hbs
       ⤤ template: client/src/ui/routes/application/template.hbs
       ⤤ template: packages/@ember/-internals/glimmer/lib/templates/outlet.hbs
    at assert (index.js:181)
    at fnHelper (index.js:7136)
    at InternalHelperReference.compute (index.js:855)
    at InternalHelperReference.value (index.js:400)
    at CapturedNamedArguments.value (runtime.js:5192)
    at processComponentArgs (index.js:4585)
    at CurlyComponentManager.create (index.js:4814)
    at Object.evaluate (runtime.js:1594)
    at AppendOpcodes.evaluate (runtime.js:94)
    at LowLevelVM.evaluateSyscall (runtime.js:3530)

unfortunately it doesnt work for modifiers

[rwjblue]

An update recently landed (in #18372) to add a new type of render debug support (this was needed for supporting custom component types in the ember-inspector), I'd be interested to see if you can take a look at that work and leverage it for some of the plumbing here.

[rwjblue]

Looks great to me, would you mind squashing the commits down to one and prefixing it with [BUGFIX beta] (so we can make sure to get this into the 3.14 release)?

[James1x0]

🙏Bitten by this often migrating to new syntaxes in octane. Any update @rwjblue ?

[rwjblue]

Thanks again @patricklx!

[deanpapastrat]

This is a godsend. Thank you for this 🙏