Solution: Refactored Comment Viewer App

Refactored comment viewer app

The value of this exercise lies in seeing how small fixes combine to form a clearer mental model of React 19’s rendering and performance behavior. This solution walks through the final refactor, tying each change back to the symptoms observed in the broken version.

Explanation

Here’s an explanation of the code above:

• In the App.js file:

  • Lines 6–11: Define ...