useEffect
use casesuseEffect
's callback's return statement execute?ErrorBoundary
actually does.eslint
integrated in create-react-app
useRef
vs local variable.useEffect
with dependencies, only on mount.setInterval
common mistakes.ref.current
as useEffect
's dependency when ref
points to a DOM element?React.forwardRef
?create-react-app
?create-react-app
?