When to use JSX.Element vs ReactNode vs ReactElement?
I am currently migrating a React application to TypeScript. So far, this works pretty well, but I have a problem with the return types of my render functions, specifically in my functional components. I have always used JSX.Element as the return type, now this doesn't work any more if a component decides to not render anything, i.e. returns null, since null is not a valid value for JSX.Element. Th
Typescript, how to pass "Object is possibly null" error?
I've got the "Object is possibly null" error many times and usually I use a safety "if statement" in case it returns null. I've got the following function: const ModalOverlay = (props: any[]) => { const overlayEl = useRef(null); useEffect(() => { overlayEl.current.focus(); }); return <div {...props} ref={overlayEl} />; } But overlayEl.current gets the error "Object is not defined". So I've tried:
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