example-type-safe

A lightwight application to demonstrate end to end type safety with TypeScript.

Features

• TypeScript - For type safety and improved developer experience
• TanStack Router - File-based routing with full type safety
• TailwindCSS - Utility-first CSS for rapid UI development
• shadcn/ui - Reusable UI components
• Elysia - Type-safe, high-performance framework
• Bun - Runtime environment
• Drizzle - TypeScript-first ORM
• PostgreSQL - Database engine

Getting Started

First, install the dependencies:

bun i

Database Setup

This project uses PostgreSQL with Drizzle ORM.

1. Make sure you have a PostgreSQL database set up (you can start one with the provided docker compose).

2. Update your apps/server/.env file with your PostgreSQL connection details.

3. Apply the schema to your database:

bun run db:push

Then, run the development server:

bun run dev

Open http://localhost:3001 in your browser to see the web application. The API is running at http://localhost:3000.

Project Structure

example-type-safe/   # Monorepo with bun
├── apps/
│   ├── web/         # Frontend application (React + TanStack Router)
│   └── server/      # Backend API (Elysia)
├── packages/
│   ├── config/      # Shared configurations
│   ├── db/          # Database schemas and validation
│   ├── env/         # Loads env var with validation

Available Scripts

• bun run dev: Start all applications in development mode
• bun run build: Build all applications
• bun run dev:web: Start only the web application
• bun run dev:server: Start only the server
• bun run check-types: Check TypeScript types across all apps
• bun run db:push: Push schema changes to database
• bun run db:studio: Open database studio UI