Performance of TypeScript Applications. Code Optimization and Speed Improvement

In modern web development, TypeScript has become the de facto standard, but its convenience and strict typing often come with hidden performance issues. Even perfectly written code can run slowly due to incorrect compiler configuration, inefficient memory management, or poor architecture. The book "Performance of TypeScript Applications" is a practical guide that will help you identify and eliminate bottlenecks in your projects.

What is this book about?

The author, Alexey Voronov, a backend developer with 10 years of experience, shares proven optimization techniques. You will learn:

• How to profile TypeScript applications using built-in Node.js tools and Chrome DevTools.
• Secrets of configuring tsconfig.json for maximum compilation and execution speed.
• Memory management techniques: leaks, garbage collection, and data structure optimization.
• Non-blocking asynchronous programming: promises, async/await, and streams.
• Build optimization: Webpack, Vite, Turbopack, and tree-shaking.
• Working with databases and APIs: minimizing latency and caching.
• Real-world cases from high-load systems (microservices, real-time applications).

Who is this book for?

This publication will be useful for:

• Developers already familiar with TypeScript but wanting to write fast code.
• Tech leads and architects designing scalable systems.
• Those transitioning from JavaScript to TypeScript and wanting to avoid common mistakes.
• Students and junior specialists who want to stand out in interviews.

What will you learn?

After reading, you will be able to:

• Measure performance with millisecond precision and find bottlenecks.
• Speed up application startup by 2-3 times through proper compilation.
• Write asynchronous code that doesn't hang the event loop.
• Reduce bundle size by 40% without losing functionality.
• Apply design patterns for high-performance systems.

The book is written in a lively style, contains numerous code examples and practical exercises. All examples are available in a GitHub repository. This is not boring theory — it is a tool you will start using immediately after reading.

If you want your TypeScript applications to fly, not crawl — this book is for you.