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LSP Setup for Claude Code

DataHub uses three language servers to give Claude Code accurate code navigation (goToDefinition, findReferences, workspaceSymbol) across the Java, Python, and TypeScript layers.

Java — jdtls (Eclipse JDT Language Server)​

Enabled per-project in .claude/settings.json:

{
  "enabledPlugins": {
    "jdtls-lsp@claude-plugins-official": true
  }
}

No additional installation needed — the plugin is bundled with Claude Code.

Python — Pyright​

Enabled globally in ~/.claude/settings.json:

{
  "enabledPlugins": {
    "pyright-lsp@claude-plugins-official": true
  }
}

Pyright requires python to be on your PATH. The repo's mise.toml provides Python 3.11:

mise install   # installs python 3.11 and other tools declared in mise.toml

TypeScript — typescript-language-server​

Not yet configured. To enable it, add to ~/.claude/settings.json:

{
  "enabledPlugins": {
    "typescript-language-server-lsp@claude-plugins-official": true
  }
}

Requires Node.js (provided by mise.toml).

Verifying​

Once enabled, LSP tools are available in Claude Code tool calls:

  • goToDefinition — jump to symbol definition
  • findReferences — find all usages
  • workspaceSymbol — search symbols by name
  • hover — type info and docs