Deno Lsp Claude Plugin — Development skill for Claude Code

claude-deno-lsp

A Claude Code plugin that provides Deno Language Server Protocol (LSP) integration for TypeScript/JavaScript code intelligence in Deno projects.

Prerequisites

• Deno installed and available in PATH
• Claude Code with LSP support

Verify Deno is installed:

deno --version

Installation

Add this plugin to your Claude Code configuration:

claude config add plugins /path/to/claude-deno

Or use `--plugin-dir` when starting Claude Code:

claude --plugin-dir /path/to/claude-deno

Features

The Deno LSP provides:

• Go to Definition - Jump to symbol definitions
• Hover Information - View type information and documentation
• Find References - Locate all usages of a symbol
• Document Symbols - List all symbols in a file
• Workspace Symbols - Search symbols across the project
• Diagnostics - Real-time error and lint warnings

Supported File Types

Extension	Language
.ts	TypeScript
.tsx	TypeScript React
.js	JavaScript
.jsx	JavaScript React
.mts, .cts	TypeScript (ESM/CJS)
.mjs, .cjs	JavaScript (ESM/CJS)

Usage

Once installed, the LSP tool becomes available for Deno files:

LSP goToDefinition   
LSP hover   
LSP findReferences   
LSP documentSymbol 

Limitations

**No automatic workspace detection**: Claude Code does not currently support `rootPatterns` for conditional LSP activation. This means:

• The Deno LSP activates for all supported file types when the plugin is enabled
• If you have other TypeScript LSP plugins enabled, there may be conflicts
• You should enable/disable this plugin manually when switching between Deno and Node projects

**Workarounds:**

1. Only enable this plugin when working on Deno projects
2. Disable TypeScript/Node LSP plugins when using Deno projects

Configu