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https://issues.apache.org/jira/browse/NETBEANS-5565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17318066#comment-17318066
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Christian Lenz commented on NETBEANS-5565:
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And also to understand it here, the languae server will not get killed, when I 
close the project. Was this inteded to be? I thought when there is no TS file 
anymore or the project with the specific file was closed, then the server 
should close too. Just want to know the correct behaviour.

> LSP sub processes increases while opening multiple git diff tabs
> ----------------------------------------------------------------
>
>                 Key: NETBEANS-5565
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-5565
>             Project: NetBeans
>          Issue Type: Bug
>          Components: lsp
>    Affects Versions: 12.3
>         Environment: Product Version: Apache NetBeans IDE 12.3
> Java: 11.0.2; Java HotSpot(TM) 64-Bit Server VM 11.0.2+9-LTS
> Runtime: Java(TM) SE Runtime Environment 11.0.2+9-LTS
> System: Windows 10 version 10.0 running on amd64; Cp1252; de_DE (nb)
> User directory: C:\Users\Chris\AppData\Roaming\Netbeans\12.3
> Cache directory: C:\Users\Chris\AppData\Local\NetBeans\Cache\12.3
>            Reporter: Christian Lenz
>            Assignee: Jan Lahoda
>            Priority: Major
>         Attachments: image-2021-04-09-17-07-56-802.png
>
>
> While investigating the situation, why the language server for TypeScript 
> opens on an core module of NetBeans "webcommon\typescript.editor" I made 
> further investigations. I think I understand the stuff better now. the 
> language server for typescript runs, because of the typescript template file. 
> So when I open a project with TS files or a TS file from a different project, 
> it will map to the mimeType and the project. Everything is fine.
> But one problem that I encountered is when I change a TS file and make a Git 
> -> Show Changes on the tab, the changes window opens and when I double click, 
> it will open the changes and it will create a new node sub process of this, 
> which never stops/killed and it does it everytime I double click on the 
> changes.
> Steps to reproduce:
> - Open the NetBeans core module webcommon\typescript.editor
> - Have a look into the Taskmanager or process explorer
> - NetBeans opens 1 instance with 2 sub node processes and starts the 
> typescript language server.
> - Make changes in the typescript file
> - Right click on the tab of the typescript file
> - Go to git -> show changes
> - Diff window opens
> - Double click on the changed TS file
> - Have a look into the task manager and you will see, it will open a new node 
> sub process and starts the language server for ts again.
> - Repeat this as often as you want.
> - We get more and more sub process of this.
> I think this here is related to it, somehow: 
> https://issues.apache.org/jira/browse/NETBEANS-5142



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