Import of library is undefined in browser mode

[apdrsn]

Describe the bug

Hi team! Thanks for the great work on Vitest! 🙏
When running a test with browser mode enabled (using Playwright), my third party library lcid is undefined, and test will fail.
If I try with browser mode disabled, lcid is available and test passes.
See github repo example for reproduction. (could not get browsers to work in stackblitz)

Reproduction

https://github.com/apdrsn/vitest-import-bug

Run:
yarn playwright install
yarn playwright install-deps
yarn test

System Info

System:
  OS: Linux 5.15 Ubuntu 20.04.5 LTS (Focal Fossa)
  CPU: (12) x64 Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
  Memory: 4.60 GB / 15.30 GB
  Container: Yes
  Shell: 5.8 - /usr/bin/zsh
Binaries:
  Node: 16.20.2 - ~/.nvm/versions/node/v16.20.2/bin/node
  Yarn: 1.22.19 - ~/.nvm/versions/node/v16.20.2/bin/yarn
  npm: 8.19.4 - ~/.nvm/versions/node/v16.20.2/bin/npm
Browsers:
  Chrome: 116.0.5845.96
npmPackages:
  @vitejs/plugin-react-swc: ^3.4.1 => 3.4.1
  @vitest/browser: 0.34.6 => 0.34.6
  vite: ^4.5.0 => 4.5.0
  vitest: 0.34.6 => 0.34.6

Used Package Manager

yarn

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.

[hi-ogawa]

I think this was a duplicate of #4264 (lcid is cjs package) and the issue seems to be slowHijackESM: true which was the default before #4414.
You can either manually set it to slowHijackESM: false or upgrade Vitest v1 so that it's false by default.