trying out an experimental typescript version

.gitignore

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 venv/
 
 .DS_Store
+dist/
+js/node_modules/

js/README.md

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+# Semgrep MCP Server - TypeScript Implementation
+
+This is the TypeScript/JavaScript implementation of the Semgrep MCP Server using the official MCP SDK.
+
+## Installation
+
+1. Navigate to the js folder:
+   ```bash
+   cd js
+   ```
+
+2. Install dependencies:
+   ```bash
+   npm install
+   ```
+
+3. Build the project:
+   ```bash
+   npm run build
+   ```
+
+## Usage
+
+Run the server:
+```bash
+npm start
+```
+
+Or for development:
+```bash
+npm run dev
+```
+
+## Available Scripts
+
+- `npm run build` - Build the TypeScript project
+- `npm start` - Run the compiled JavaScript server
+- `npm run dev` - Run the TypeScript server with tsx
+- `npm test` - Run tests
+- `npm run lint` - Run ESLint
+- `npm run typecheck` - Run TypeScript type checking
+
+## Features
+
+The TypeScript implementation provides the same functionality as the Python version:
+
+### Tools
+- `semgrep_scan` - Run Semgrep scan on code content
+- `semgrep_scan_with_custom_rule` - Run scan with custom rule
+- `security_check` - Fast security check
+- `semgrep_findings` - Fetch findings from Semgrep AppSec Platform
+- `get_supported_languages` - Get supported languages
+- `get_abstract_syntax_tree` - Get AST for code
+- `semgrep_rule_schema` - Get Semgrep rule schema
+
+### Prompts
+- `write_custom_semgrep_rule` - Generate custom Semgrep rules
+
+### Resources
+- `semgrep://rule/schema` - Semgrep rule schema
+
+## Environment Variables
+
+- `SEMGREP_API_TOKEN` - Required for accessing Semgrep AppSec Platform
+- `SEMGREP_URL` - Semgrep API URL (defaults to https://semgrep.dev)
+
+## Requirements
+
+- Node.js 18+
+- Semgrep CLI installed and available in PATH