Join egghead, unlock knowledge.

Want more egghead?

This lesson is for members. Join us? Get access to all 3,000+ tutorials + a community with expert developers around the world.

Unlock This Lesson
Become a member
to unlock all features

Level Up!

Access all courses & lessons on egghead today and lock-in your price for life.


    Unlock TypeScript's Features in Vanilla JS with @ts-check and JSDoc


    TypeScript can help you with your plain JavaScript files if you add a simple //@ts-check comment. Then you can enhance the experience by add proper JSDocs to describe your functions which will feed type information into TypeScript and give you a development experience near TypeScript itself.