TypeScript Essentials

Hello World

Now that we have the compiler installed, let's start writing some code. This wouldn't be a good technical book without the inclusion of "Hello World" to get you started with writing code in a new language. The code for this particular example is pretty simple, but we can use it to demonstrate some of the early benefits of switching to TypeScript.

Command-line compilation

The TypeScript compiler is nothing more than JavaScript code; it is possible to compile your TypeScript anywhere that a JavaScript host exists. Earlier, we saw that an executable was provided that allows us to compile our code from the command line. We will walk through this first example using this executable and discover how simple it is to get going with TypeScript. ...