Different test coverage reports on different computers

[pkolt]

Describe the bug

Hi! It seems to me that this bug appeared in one of the new versions. Because before the update to 0.33 everything worked without errors. Different computers produce different test coverage results.

Here the problem is not in CircleCI, I tried to run coverage on another Linux computer, the result was also different from coverage on a Macbook.

Reproduction

TZ=UTC vitest --bail=1 --coverage.enabled --coverage.reporter='text-summary' --coverage.reporter='html' --reporter=junit --outputFile=./reports/junit/test-results.xml

System Info

System:
    OS: macOS 13.4.1
    CPU: (10) arm64 Apple M2 Pro
    Memory: 392.42 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 18.16.0 - ~/.nvm/versions/node/v18.16.0/bin/node
    npm: 9.6.6 - ~/.nvm/versions/node/v18.16.0/bin/npm
  Browsers:
    Chrome: 115.0.5790.102
    Safari: 16.5.2
    Safari Technology Preview: 17.0

Used Package Manager

npm

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[github-actions]

Hello @pkolt. Please provide a minimal reproduction using a GitHub repository or StackBlitz. Issues marked with need reproduction will be closed if they have no activity within 3 days.

[AriPerkkio]

The 0.33.0 release shouldn't change anything coverage related. And it looks like you are using @vitest/coverage-istanbul which hasn't had any big changes recently.

Without being able to reproduce this issue I have no idea what could cause it.