Restarting Language server spawns new output channel

[SaintPepsi]

Describe the bug

Running "Svelte: Restart Language Server" in VSCode spawns an additional svelte process shown in the output without clearing the old one

Reproduction

Given the user has "Svelte for VS Code" installed.
And the user has opened a .svelte file. (Starts initial process)
When the user runs the VSCode command "Svelte: Restart Language Server"
Then an additional "svelte" process starts while the old process reads: "[Error - 09:22:17] Server process exited with code 0."

Expected behaviour

Given the user has "Svelte for VS Code" installed.
And the user has opened a .svelte file. (Starts initial process)
When the user runs the VSCode command "Svelte: Restart Language Server"
Then the existing process is re-used or discarded

System Info

• OS: MacOS 15.3.2 (24D81)

• IDE: VSCode
  Version: 1.98.2
  Commit: ddc367ed5c8936efe395cffeec279b04ffd7db78
  Date: 2025-03-12T13:32:45.399Z
  Electron: 34.2.0
  ElectronBuildId: 11161602
  Chromium: 132.0.6834.196
  Node.js: 20.18.2
  V8: 13.2.152.36-electron.0
  OS: Darwin arm64 24.3.0

• Plugin:
  Name: Svelte for VS Code
  Id: svelte.svelte-vscode
  Description: Svelte language support for VS Code
  Version: 109.5.3
  Publisher: Svelte
  VS Marketplace Link: https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode

Which package is the issue about?

No response

Additional Information, eg. Screenshots

Screen.Recording.2025-03-23.at.09.13.34.mov

[jasonlyu123]

Did you just want to not have multiple "svelte" in the output channel? Our restart implementation is before vscode-languageclient added the restart method. But even if we use the "restart" method it provides, it would also not "reuse" the process and the output channel. Just it won't have multiple entries. Is this what you wanted?

[SaintPepsi]

It's not what I would expect, I would expect there to only be one so that I don't have to find the one that's currently working.

[jasonlyu123]

I am not sure which part isn't what you expect but sounds like you only care about seeing multiple svelte output channels. I was trying to say that you can't restart without creating a new child process. The output channel will also not be the same, but there won't be multiple "svelte" outputs.

[SaintPepsi]

@jasonlyu123 I would not expect there to be multiple output channels but sounds like you only care about about what you know.

I don't know anything about the ins/outs of how the language server works, and i'm just trying to help. So please don't make unhelpful comments.
There is clearly multiple svelte outputs/channels whatever they are called it doesn't matter:

I have literally included a video

[jasonlyu123]

I don't know what you mean by "process". That's why I linked a wiki page to mention what I meant by "process". I am just trying to confirm what you are saying since the term you're using doesn't make sense to me. If your "process" just means "output channel' then I get what you meant. But if it meant the actual language server "process (computing)" then it is a completely different story.