Learn TypeScript

TypeScript adds static typing to JavaScript, catching many kinds of bugs before your code even runs.

During this course, we'll build Support.ai, a make-believe LLM-powered chat app that ruins automates customer support.

Assignment

Edit the code to print starting server... to the console instead of edit me.

The : string annotation tells the TypeScript compiler that bootupMessage holds a string.

This course assumes you're already familiar with JavaScript. If you're not, start with our Learn JavaScript course first.