Vitest fails when using vite-plugin-ruby

[timgoeller]

Describe the bug

Based on this issue in the vite-plugin-ruby repo: ElMassimo/vite_ruby#170

When using vite-plugin-ruby, the execution of Vue Component Tests does not work. It fails with Error: failed to load /vite-development/@vite/client. @ElMassimo mentioned, that it is probably related to the use of base (ElMassimo/vite_ruby#170 (comment)).

Reproduction

https://stackblitz.com/edit/node-sr8dj2?file=vite.config.js

System Info

System:
    OS: macOS 11.4
    CPU: (12) x64 Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
    Memory: 79.82 MB / 16.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 16.13.1 - ~/.asdf/installs/nodejs/16.13.1/bin/node
    Yarn: 1.22.17 - ~/.asdf/installs/nodejs/16.13.1/.npm/bin/yarn
    npm: 8.1.2 - ~/.asdf/plugins/nodejs/shims/npm
  Browsers:
    Chrome: 96.0.4664.110
    Firefox: 95.0.2
    Safari: 14.1.1
    Safari Technology Preview: 14.2
  npmPackages:
    @vitejs/plugin-vue: ^2.0.1 => 2.0.1 
    vite: ^2.7.0 => 2.7.10 
    vitest: ^0.0.131 => 0.0.131

Used Package Manager

yarn

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[sheremet-va]

The reproduction you provided fails with other error. I also downloaded your repo and it doesn't fail at all.

Did you mean to issue this error: Cannot read properties of undefined (reading 'userAgent')?

[timgoeller]

@sheremet-va My bad, the repo worked because publicOutputDir in vite.json was set to "" to check if the issue actually has something to do with base. I've changed it to values one would actually use, and it should fail now.

The message Cannot read properties of undefined (reading 'userAgent') is the desired state on stackblitz, since it shows the test ran.