React, React-Router, vanilla css, typescript REST Countries

What are you most proud of, and what would you do differently next time?

I made the select from scratch, it is not perfect but it emulate close the real one (I hope so), it just have some details that I would continue working in new projects or continue in this one. I implemented the transitions over the flags between routes. I feel I did good the theme color with the variables css and detect the os preference color.

Edited: I added a Debounce class with typescript and I learned a lot implementing the types using constraints and generics!

What challenges did you encounter, and how did you overcome them?

It was interesting to experiment with react-router avoiding to catch the data fetched from the api and when to revalidate it.

What specific areas of your project would you like help with?

I got problems with some flags to transition correctly. I think it could be related to the special symbols on the names but I didn't see the difference when I activated the anchor to transition. The file is Card.tsx