# jdtls, typescript-language-server and CocoaPods

> The Java and TypeScript language servers for editors and AI agents, and CocoaPods for Flutter's iOS builds.

Language servers give an editor or an AI agent what an IDE knows: where a symbol is defined, who calls it, and what does not compile. The workstation installs them once, from Homebrew, so every tool uses the same copy. CocoaPods fetches the iOS libraries a Flutter app depends on.

## On the workstation

-   Installed by the `jdtls`, `typescript-language-server` and `cocoapods` formulae.
    
-   Claude Code uses them through the `jdtls-lsp` and `typescript-lsp` plugins from `claude-plugins-official`; `gopls-lsp` uses gopls from the [Go tools](go.html).
    
-   jdtls runs on the Java that mise makes active.
    
-   Flutter runs `pod install` itself when it builds for iOS.
    

## Keys and commands

 
| Key or command | Does |
| --- | --- |
| 
`/plugin install jdtls-lsp@claude-plugins-official`

 | 

Give Claude Code the Java language server

 |
| 

`/plugin install typescript-lsp@claude-plugins-official`

 | 

Give Claude Code the TypeScript language server

 |
| 

`cd ios && pod install --repo-update`

 | 

Fetch a Flutter app’s iOS pods with fresh specs

 |
| 

`pod outdated`

 | 

List pods with newer versions

 |

When a Flutter iOS build fails over pods after a Flutter upgrade, remove `ios/Pods` and `ios/Podfile.lock`, then build again.

## See also

-   [Claude Code and AI tools](claude-code.html)
    
-   [IntelliJ IDEA and Neovim](editors.html)
    
-   [Eclipse JDT Language Server](https://github.com/eclipse-jdtls/eclipse.jdt.ls)
    
-   [typescript-language-server](https://github.com/typescript-language-server/typescript-language-server)
    
-   [CocoaPods guides](https://guides.cocoapods.org)