Summary

We have covered a lot of ground in this chapter. We started with a discussion on interfaces, and how they allow us to define custom types that can be used to better describe objects with their designated properties and sub-properties. We then moved on to discuss classes, and how to use the various TypeScript language features that are specially designed with classes in mind. This discussion included class constructors, class modifiers, readonly properties, get and set functions, and static properties and methods. We then discussed the ins and outs of class and interface inheritance. We took a look at the super keyword, and how it can be used within class constructors as well as class methods in a class hierarchy. We then discussed abstract classes, abstract methods, the protected access modifier, and instanceof. In the final section of this chapter, we discussed modules, and how breaking up a large project into multiple smaller files can aid with code structure. We showed...