Issues with Language Server when vue file is not open initially

[fardolieri]

Vue - Official extension or vue-tsc version

v2.1.10

VSCode version

1.95.3

Vue version

3.5.13

TypeScript version

5.6.3

System Info

System:
    OS: Linux 6.9 Pop!_OS 22.04 LTS
    CPU: (16) x64 AMD Ryzen 7 2700X Eight-Core Processor
    Memory: 14.78 GB / 31.29 GB
    Container: Yes
    Shell: 5.1.16 - /bin/bash
  Binaries:
    Node: 20.15.1 - ~/.volta/tools/image/node/20.15.1/bin/node
    npm: 10.7.0 - ~/.volta/tools/image/node/20.15.1/bin/npm
    pnpm: 7.0.0-rc.9 - ~/.local/share/pnpm/pnpm
    bun: 1.1.12 - ~/.bun/bin/bun
  Browsers:
    Chrome: 131.0.6778.85

package.json dependencies

"dependencies": {
    "vue": "^3.5.13"
  },
  "devDependencies": {
    "@vitejs/plugin-vue": "^5.2.1",
    "typescript": "~5.6.2",
    "vite": "^6.0.1",
    "vue-tsc": "^2.1.10"
  }

Steps to reproduce

1. Create a new project using npm create vite@latest vue-example2 -- --template vue-ts and have the VSCode extension Vue - Official installed.
2. Open ./src/components/HelloWorld.vue and restart VSCode
3. The file should be open automatically and the Vue Language Server should be up and running. Type information is showing on hover.
4. Close the file and reopen VSCode
5. The file should not be open
6. When opening ./src/components/HelloWorld.vue the Vue Language Server is in a broken state and doesn't show type information.

What is expected?

The Vue Language Server should run regardless of the action order.

What is actually happening?

The Vue Language Server is in a broken state and doesn't show type information.

Link to minimal reproduction

No response

Any additional comments?

No response

[avenmore]

My work-around, when I see that the component tag syntax highlighting has not activated for a .vue file, is to run "Developer: Reload Window" from the command palette. Rather annoying.

[arpadgabor]

This is an issue that is affecting us as well and it is very annoying especially on bigger projects. We also have this happening even while working on a file and randomly the type acquisition stops working altogether with no apparent error. Reloading the Vue server fixes it, but it's temporary until it happens again.

Would be great if this issue was given a higher priority because the language server is rather flaky. I will try to come up with my own repro's these days, but leaving this comment until then.

[KazariEX]

We can use restartExtensionHost instead of reloadWindow.

[EduardoMay]

but it's annoying to have to restart