JavaScript is old and its dynamic nature can make it very difficult to build large applications in a maintainable way.  But, add the immense power of compile-type static typing and all of the sudden you've got an enterprise-ready language that saves you from many common JavaScript issues and actually makes web development an enjoyable experience.  TypeScript is a superset of JavaScript - completely compatible in every way, yet it brings the language to a whole new level.

JavaScript is the defacto language of the world.  TypeScript is JavaScript, only better.

Join experienced coder, Jess Chadwick, as he explores the world of TypeScript.  Starting with the basics and fundamental ECMAScript 2015 features that TypeScript expands upon, Jess shows you all the ways that TypeScript allows you to bring your JavaScript development to the next level.

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You are welcome to choose to pay any amount you wish in order to access this book.  If you choose not to pay anything, please repay me with your feedback. I would love a testimontial or to hear your comments, suggestions, and criticisms.  Even better: if there is a change you'd like to see, clone the GitHub repository, make the changes yourself, and submit a pull request.  I will recognize anyone who provides constructive feedback or changes on a special"Contributors" page in the book itself.