Setting enableTypeScriptTransform to true breaks imports in .gjs tests

[azhiv]

I'm trying to add TS declarations to our V2 addon and to modify the test-app so that it properly consumes those declarations. The initial state of the repository was as follows:

• the V2 addon has no *.d.ts files
• the test-app has no TS support, however it has a .gjs test file which runs successfully

I then followed this instruction to add declaration files to the addon.
The problem is when I add TS-related dependencies to the test-app (all source files extensions are preserved) and set 'ember-cli-babel': { enableTypeScriptTransform: true }, in ember-cli-build.js, the tests start failing with a very generic error "Could not find module <addon-name> imported from test-app/tests/integration/helpers/<gjs-test>". Here's the PR which reproduces the error, this is the exact test output.

Note that without setting 'ember-cli-babel': { enableTypeScriptTransform: true }, the tests succeed. Please also note that ember-cli-typescript is omitted.

Am I missing some piece of configuration?

PS: This is the difference in the output tree before and after setting enableTypeScriptTransform:

[NullVoxPopuli]

Thanks for reporting (and provided a repro repo), I'll look in to this, as I believe this may be the issue I'm seeing in a work-related project!

[NullVoxPopuli]

So far, I've noticed that the issue reproduces only in classic (broccoli-only) mode -- @embroider/webpack (and @embroider/vite) do not have this issue.

[azhiv]

@NullVoxPopuli Is there a workaround we could apply, e.g. switching to the above mentioned bundlers?

[NullVoxPopuli]

right now the only work around I know of is to use v3 of template-imports. I have a hunch the babel config we have with ember-cli-babel may not be playing well with v4 of template-imports.

Sorry it took so long to reply, this week's been nuts

[andreyfel]

Seems that the issue is resolved now with the latest release of babel-plugin-ember-template-compilation after this change emberjs/babel-plugin-ember-template-compilation#34

[NullVoxPopuli]

Confirmed!