Problem Description

└─┬ @lingui/vite-plugin@5.9.2
  └── peer vite@^3 || ^4 || ^5.0.9 || ^6 || ^7: resolved to 8.0.0

error: Uncaught (in promise) TypeError: Cannot convert undefined or null to object

⏺ Binary search / plugin isolation:

1. The error was TypeError: Cannot convert undefined or null to object during transforming... with no stack trace — Deno swallows it.
2. Since Vite 8 (Rolldown) changed plugin internals, and two plugins explicitly declared no Vite 8 peer dep support (@deno/vite-plugin, @lingui/vite-plugin), plugins were the prime suspects.
3. Commented out plugins one at a time:
   - Removed sentryVitePlugin → still failed
   - Removed deno() → still failed
   - Removed lingui() → build succeeded

Additional Context

• Repo: vitejs/vite-plugin for @lingui/vite-plugin
• Versions: @lingui/vite-plugin@5.9.2 + vite@8.0.0
• Error: TypeError: Cannot convert undefined or null to object during transforming... phase
• Repro: Add lingui() to plugins in vite.config.ts, run vite build
• Workaround: Remove lingui() — Lingui macros still work via @lingui/babel-plugin-lingui-macro inside @vitejs/plugin-react