Unable to mock dependency's modules if exports in dist directory

[mrmckeb]

Describe the bug

Vitest is unable to mock modules for a dependency if the exports of that dependency are in a dist/ directory. Any other directory name does not have this issue (i.e. dist-foo/).

Reproduction

https://github.com/mrmckeb/vitest-fs-repro

System Info

System:
    OS: macOS 13.4
    CPU: (8) arm64 Apple M1
    Memory: 58.84 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 16.14.2 - ~/Library/Caches/fnm_multishells/39488_1685414171394/bin/node
    Yarn: 1.22.15 - ~/Library/Caches/fnm_multishells/39488_1685414171394/bin/yarn
    npm: 7.20.1 - ~/Library/Caches/fnm_multishells/39488_1685414171394/bin/npm
  Browsers:
    Chrome: 113.0.5672.126
    Edge: 113.0.1774.57
    Firefox: 113.0.2
    Safari: 16.5

Used Package Manager

pnpm

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

[mrmckeb]

This seems to be related to #3444.

When I crudely applied the changes from #3446, the issue seems to be resolved.

[sheremet-va]

Fixed in 0.31.2