Alias not being resolved when mocking a module since 0.27.3

[kalvenschraut]

Describe the bug

For example I use @ to point to my src directory and instead I have to use ../src/ instead since my tests are in a test dir at the top level.

Reproduction

broken case on https://stackblitz.com/edit/vitest-dev-vitest-mmdlkp?file=package.json 0.27.3

working case on https://stackblitz.com/edit/vitest-dev-vitest-7vrs2x?file=package.json 0.27.2

Note same test case for both just changed version for your convenience. Its also still broken on the latest version at time of writing this (0.28.3)

System Info

repo on stackblitz

Used Package Manager

npm

Validations

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• Read the Contributing Guidelines.
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• The provided reproduction is a minimal reproducible example of the bug.

[philipbushnell-valtech]

It might be bigger than just aliases. I have the following in my vitest.setup.ts and it's also stopped working from 0.27.3 onwards (up to 0.28.3, the latest at time of writing):

vi.mock('vue-i18n', () => ({
  useI18n: () => ({ t: (key: string) => key }),
}));

I had to downgrade to 0.27.2.

Interestingly, I also have this in my vitest.setup.ts and it works just fine:

vi.mock('nuxt/app', () => ({
  useRuntimeConfig: () => ({
    ...
    public: {
      ...
    },
  }),
}));

[sheremet-va]

Probably because of this: #2687

We need to revert it

[jgoux]

Hello 👋

After investigating my own issue: #2787 I realized this was caused by the same code!