TS.08.01 JuniorCore — asked often

Typing components and props

Comes up in: React, Coding

This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.

What it covers

props types
children (ReactNode)
ComponentProps<"button"> and spreading native props
event handler types
avoiding React.FC pitfalls (implicit children history)
ref as a prop in React 19

Words you will know

ReactNodeComponentProps

What you will practise

typed Button that extends native button props

Interview questions this answers

How do you type a component that accepts all native button props plus your own?
How do you make sure API responses match your TypeScript types?