Unplugin Auto Imports Typescript Issue

This is a quick demo of some various Typescript-related issues with Unplugin Auto Imports within an Nx Monorepo setup. This is a default, Vue/Vite-based scaffold from npx create-nx-workspace@latest with all dependencies up-to-date along with a nx g @nx/js:lib mylib --directory libs.

To demonstrate the Type issues:

1. Clone the repo: git clone [email protected]:K3TH3R/unplugin-auto-imports-typescript-issue.git
2. Install deps: yarn install
3. Open up the file libs/mylib/src/lib/mylib.ts and libs/mylib/vite.config.ts
4. In it's default state, running yarn build will run the Nx build commands using the libs/mylib/vite.config.ts file for the build. Everything works and builds fine.
5. If you uncomment either of the commented out functions, the build will break due to Type related errors.

Where the Confusion Lies

In the AutoImport() within libs/mylib/vite.config.ts, I have three auto-imports from Cesium: Cartesian2, Cartesian3, and Color as well as a "type" import for the first two of these objects. In the case of Cartesian2, I'm renaming it to TCartesian2 to avoid namespace clashes in the autoimports.

Type Aliases

In the case of Cartesian2, you can see the global import of the function works fine for the mylib() default build, however the TCartesian2 global type import (mylib2()) throws the following TypeScript error:

Return type of exported function has or is using private name 'TCartesian2'.ts(4060)

However, if I do this exact same type alias format (mylib3()) without global autoimports, it works fine.

Type Clashes

In the case of a straight global import of both the function and the type, as shown with Cartesian3, I am seeing two TypeScript errors:

- Return type of exported function has or is using private name 'Cartesian3'.ts(4060)
- 'Cartesian3' cannot be used as a value because it was exported using 'export type'.ts(1362)

And just to be super sure, I have a second version where I do a global import of the Color function with no auto type import which also fails with the following errors:

- 'Color' refers to a value, but is being used as a type here. Did you mean 'typeof Color'?ts(2749)
- Return type of exported function has or is using private name 'Color'.ts(4060)

However, I do the exact same format with Cartesian4 below it without issue.