WIP: Show original TS internal error (Fixes #824)

[simonbuchan]

See #824 for details.

Works around webpack catching thrown errors from the loader hook, and pushing them to compilation.errors, but not from the after-compile hook, meaning some internal TS errors get hidden by a different error.

[johnnyreilly]

Thanks for the PR! Unfortunately this breaks some of the error reporting; the comparison test for errors being a case in point. Would you like to try a different approach?

BTW is it worth splitting out the example into a separate PR or does it require your change to work?

[simonbuchan]

Yep, I expected pretty much something like that, hence it being a WIP hack 😉

The example is in a seperate commit deliberately so it could be pulled out, but I threw it in in case you would like having a repro ready to go. (You might notice it's using the local package like the test cases unlike the other examples)

As I described in the issue, I'm not sure what the right approach is here yet. If you have some ideas given that description of what's happening in happy to give it a try, or I'll do some experimenting.

But a bit late for me here tonight!

[johnnyreilly]

or I'll do some experimenting

Experiment away! I'm on my holidays right now but I'll be watching with interest 😁

[johnnyreilly]

Closing due to inactivity