In the previous few chapters of the TypeScript Tutorial series we have learned how to install TypeScript and then begin with creating a simple HelloWorld application. We have also learned about TypeScript configuration file (tsconfig.json).

In this chapter we will learn various ways to declare variables in TypeScript. Continue reading to learn more about it.

The tsconfig.json file allows you to specify the root level files and the compiler options that requires to compile a TypeScript project. The presence of this file in a directory specifies that the said directory is the TypeScript project root.

In this chapter of the TypeScript Tutorial series we will learn about tsconfig.json, it's various properties and how to extend it.