Add typegen tests for never computed for eventsCausing* and invokeSrcNameMap

[Andarist]

Just adding tests to ensure that this kind of generated output would work with the current type machinery

related to statelyai/xstate-tools#411

[changeset-bot]

⚠️ No Changeset found

Latest commit: 908c065

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[ghost]

CodeSee Review Map:

Review in an interactive map

View more CodeSee Maps

Legend

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

Latest deployment of this branch, based on commit 908c065:

Sandbox	Source
XState Example Template	Configuration
XState React Template	Configuration

[Andarist]

This is weird... my VSCode says this is OK but CI and my local yarn dev complain in the same way.

I've figured out the difference is in strictNullChecks:

• without strictNullChecks, it behaves like my VSCode and it's expected because the tsconfig for the core is not using that setting
• with strictNullChecks, it behaves like CI and local yarn dev

We need to unify the compilation settings in the future, in the meantime, I would not merge this PR - but the point is, the error is reported correctly in both cases. It's just a slightly different error and it's reported in a slightly different location. I think it still makes sense to output those nevers in the typegen. cc @mattpocock

[Andarist]

Since I've migrated out test suite to use the strict mode - the reported errors should be consistent now.