Extending Classes and Interfaces using TypeScript

added by JavaScript Kicks
4/14/2015 3:09:35 PM


In a previous post I discussed the fundamentals of the TypeScript language and how it can be used to build JavaScript applications. TypeScript is all about strongly-typed variables and function parameters, encapsulation of code, and catching issues upfront as opposed to after the fact to provide more maintainable code bases. One of the great features it offers is the ability to take advantage of inheritance without having to be an expert in JavaScript prototypes, constructors, and other language features (although I certainly recommend learning about those features regardless if you use TypeScript or not). In this post I’ll discuss how classes and interfaces can be extended using TypeScript and the resulting JavaScript that’s generated. Let’s jump in!