TypeScript in Depth · Typing React · Lesson 14 of 16
Typing Children and Components
Concept
Typing Children and Components
React.ReactNode types anything renderable as children, which is useful for wrapper and layout components.
By the end of this lesson
- Explain the core idea behind Typing Children and Components.
- 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 Children and Components. 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 a Layout component's props to accept children of type React.ReactNode.
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