TypeScript in Depth · Typing React · Lesson 11 of 16
Typing Props
Concept
Typing Props
Define an interface for a component's props so TypeScript checks every usage of that component.
By the end of this lesson
- Explain the core idea behind Typing Props.
- Predict output before running a change.
- Test one realistic and one unusual input.
- Use the result to make the next decision.
How to study this page
- 1. Read one concept.
- 2. Change the example.
- 3. Run, compare, and explain.
- 4. Complete the challenge below.
Self-check before continuing
Without looking at the example, describe what changes when you modify one input in Typing Props. Then reopen the editor and prove your explanation with a small test.
You are ready to continue when you can predict, test, and explain the result.
Your turn
Define props for a Card component with a title and an optional description.
Need a nudge?
Ask about this lesson or your next move. The guide explains the path without taking the work away from you.
Ready for the next lesson?
Mark this lesson complete when you have finished the exercise.
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