Learn TypeScript 3 by Building Web Applications

Summary

In this chapter, we learned about important features in TypeScript. Now that you know about generics and enums, you can write better code and eliminate a lot of duplication in your applications. While building MediaMan, we also had occasion to put those concepts to good use.

Building MediaMan has also allowed us to introduce many other TypeScript features, such as the following:

• Type definitions (typings)
• String literal types
• Union and intersection types
• Decorators
• The any special type
• The keyof index type query operator
• Mapped types

Since we wanted to build an offline web application, we also learned about standard web APIs such as LocalStorage, SessionStorage, and IndexedDB.

We then explored, in practice, how to leverage these ...