TypeScript is a modern and safer version of JavaScript that has taken the web development world by storm. It is a superset of JavaScript that adds in some additional features, syntactic sugar and static type analysis aimed at making you more productive and able to scale your JavaScript projects.

TypeScript was first launched in 2012, and at the time it did bring a lot of new features to JavaScript. Features that wouldn’t be available in JavaScript until much later with ES2015 and beyond. Today however, the gap in features between TypeScript and JavaScript is closing, and what remains as TypeScript strongest value proposition is its amazing type system and the dev tools around it. This type system is the one that delivers on the promise of TypeScript: JavaScript that scales and what brings you a great develop experience with:

• Instant feedback whenever you do something dumb
• Powerful statement completion
• Seamless semantic code navigation
• Smart refactorings and automatic code fixes
• And more

In this series of articles we’ll explore TypeScript’s comprehensive type system and learn how you can take advantage of it to build very robust and maintainable web apps.