Bun 2.0 in 2026: The Fastest JavaScript Runtime Gets Even Better

Bun 2.0 has arrived in 2026, bringing significant improvements to the already-fast JavaScript runtime. With native TypeScript support, built-in bundling, and Node.js compatibility, Bun is ready for production.

What's New in Bun 2.0

• Improved Node.js compatibility: 99%+ npm packages work
• Native Windows support: First-class Windows experience
• Bun Shell: Cross-platform shell scripting
• Better debugging: Integrated debugger and profiler

Getting Started with Bun

# Install Bun
curl -fsSL https://bun.sh/install | bash

# Create new project
bun create next-app my-app

# Run TypeScript directly
bun run server.ts

# Install packages (incredibly fast)
bun install

Performance Benchmarks

// HTTP server benchmark
// Bun: 150,000 req/s
// Node: 65,000 req/s
// Deno: 80,000 req/s

Bun.serve({
  port: 3000,
  fetch(req) {
    return new Response("Hello from Bun!");
  }
});

Migrating from Node.js

1. Replace node with bun in commands
2. Update package.json scripts
3. Test thoroughly—most code works unchanged
4. Replace Node-specific APIs if needed

When to Use Bun

Bun is ideal for:

• New projects without legacy dependencies
• Performance-critical applications
• TypeScript-first development
• Monorepo tooling and scripting