Missing Compiler Errors when using Typescript Project References

[berickson1]

Expected Behaviour

ts-loader warns about all typescript compiler errors on first run

Actual Behaviour

errors for composite projects are ignored when re-running webpack

Steps to Reproduce the Problem

1. Have a working & building typescript project that uses composite projects
2. Stop webpack
3. Introduce a compiler error into one of the composite projects
4. Run Webpack

At this point I'd expect an error, but the build reports as successful and emits without issue

Location of a Minimal Repository that Demonstrates the Issue.

https://github.com/berickson1/project-references-demo

For the above:

1. run npm install
2. run npm run webpack
3. observe successful build
4. stop webpack
5. Open animals/dog.ts and uncomment line 15 to introduce a compiler error
6. run npm run webpack
7. Observe "successful" build

Note: I turned on ts-loader logging and you can see that the error is being reported during the typescript build process, but it doesn't bubble up to webpack

[johnnyreilly]

This will hopefully be remedied by the excellent work @sheetalkamat is doing in #1076

[berickson1]

Looks like it did! I'm happy to report that this no longer repros on [email protected].