HMR is broken with Vue SSR

[yooouuri]

Describe the bug

src/server/index.ts is transformed. In the transform, src/app/entry-server.ts import and usage is added to src/server/index.ts.

So App.vue is imported within the transform.

When I change some code, inside the script, the following error occur:

Reproduction

https://github.com/yooouuri/hono-vue

Steps to reproduce

pnpm install
pnpm run dev

Add a <script setup lang="ts"></script> to the App.vue and tinker a little bit.

System Info

System:
    OS: macOS 15.3
    CPU: (12) arm64 Apple M4 Pro
    Memory: 86.00 MB / 24.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 23.5.0 - ~/.nvm/versions/node/v23.5.0/bin/node
    npm: 11.1.0 - ~/.nvm/versions/node/v23.5.0/bin/npm
    pnpm: 10.2.1 - ~/.nvm/versions/node/v23.5.0/bin/pnpm
    bun: 1.2.2 - /opt/homebrew/bin/bun
  Browsers:
    Safari: 18.3
  npmPackages:
    @vitejs/plugin-vue: ^5.2.1 => 5.2.1 
    vite: ^6.1.0 => 6.1.0

Used Package Manager

pnpm

Logs

No response

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.
• Make sure this is a Vite issue and not a framework-specific issue. For example, if it's a Vue SFC related bug, it should likely be reported to vuejs/core instead.
• 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]

Can you try minimizing repro? For starter, it would be nice to see if it reproduces without vue-router. The issue could be on vue router plugin or hono plugin.

[github-actions]

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

[yooouuri]

Can you try minimizing repro? For starter, it would be nice to see if it reproduces without vue-router. The issue could be on vue router plugin or hono plugin.

Sure I'll minimize it

[yooouuri]

@hi-ogawa I also reproduced it with the create-vite-extra vue ssr example.

git clone git@github.com:bluwy/create-vite-extra.git
cd create-vite-extra
cd template-ssr-vue
pnpm install
pnpm run dev

Tinker in the script setup in App.vue, like assigning a const or something.

And here it doesn't do anything with transform nor hono or vue-router

Screen.Recording.2025-02-14.at.12.34.37.mov

[hi-ogawa]

Thanks for the reproduction. I think this is Vue specific issue, so I'm moving the issue. Maybe underlying issue is same as #146.