Disclaimer: It’s one of the Smashing Books I’ve been working on as their (ex-) product manager.<p>TypeScript in 50 Lessons was written by Stefan Baumgartner (<a href="https://twitter.com/ddprrt" rel="nofollow">https://twitter.com/ddprrt</a>) and technically reviewed by Shawn Wang (<a href="https://twitter.com/swyx" rel="nofollow">https://twitter.com/swyx</a>).<p>There’s a sample PDF chapter available at <a href="http://provide.smashingmagazine.com/eBooks/typescript-sample-chapter.pdf" rel="nofollow">http://provide.smashingmagazine.com/eBooks/typescript-sample...</a><p>I hope it may be worth a read or perhaps even buying the book. Enjoy!