Transpiling

"Hello TypeScript"

When we run a TypeScript file, the TypeScript compiler is responsible for transpiling it into a corresponding JavaScript file. This process is known as transpiling, allowing us to run our TypeScript code in environments that only support JavaScript, such as a web browser or a Node server.

You might be wondering, where is this JavaScript file that’s being generated? We won’t see it in the code editor—it’s happening behind the scenes. But don’t worry; we’ll take a closer look at the transpiling process in a moment.

For now, let’s just run this simple Hello TypeScript program and see what happens. Go ahead and press the “Run” button to see the output of the following code.