Really wish the author had gone all in on hook patterns rather than start with component patterns and make a transition. 1. Use TypeScript to catch errors earl

Really wish the author had gone all in on hook patterns rather than start with component patterns and make a transition. 1. Use TypeScript to catch errors early 2. Use hooks 3. Build your data access layer as custom hooks -- e.g. const { isLoggedIn, loggin } = useAuth(); 4. Tips on refactoring to have testable components 5. Understand when to use memoization -- expensive is in the eye of the beholder.