Fix TS support, allowing type-checking in tests

[NullVoxPopuli]

Resolves: #53

Prior to this PR, tests do not have a tsconfig, and thus no ts/glint things work in tests.

At present, we get a ton of:

[fix:js]   0:0  error  Parsing error: tests/rendering/template-only-test.ts was not found by the project service. Consider either including it in the tsconfig.json or including it in allowDefaultProject

This PR:

• unskips the typescript tests
• differentiates between dev ts and publish ts (as we do with babel)
• enables Glint/TS to work in tests

Sort of based off prior explorations here: https://github.com/NullVoxPopuli/nullui/tree/main (note the config directory)

[NullVoxPopuli]

used for the main tsconfig / test app

library tsconfig is now only for publish

Unstable switched to real alpha versions

[mansona]

This is looking very good. I'm not sure my review should be blocking because most of the comments are quite minor, I'm just starting to review things in the addon-blueprint with a finer tooth comb at the moment 🙈

[mansona]

I think we need to do a beforeEach to set up the component if we're worried about things like this no?

[mansona]

Or move this kind of test into a new describe() suite with its own setup?

[NullVoxPopuli]

it is in a beforeEach + its own describe! 🎉

[mansona]

no sorry you misunderstand what I said, if we're deleting a folder in the addonDir in a beforeEach then that suggests that we should be creating the addon in the beforeEach to be safe. Does that make sense?

[NullVoxPopuli]

It does not. That sounds like work we don't need to do (and currently don't do)

test order isn't guaranteed, and no test should assume prior work has happened (aside from addon creation and fixture copying)

We don't have any cleanep for the addon itself, or the fixture files, so anything that doesn't operate on fixtures is outside the fixture using describe. Any files we don't want, are deleted before each test, because we can't trust they're already gone for other reasons

[mansona]

I still feel uncomfortable about this 🙈 but we can discuss it in a follow-up PR 👍

[mansona]

LGTM 💪