What does the error “JSX element type '…' does not have any construct or call signatures” mean?

Question

I wrote some code:

function renderGreeting(Elem: React.Component) {
    return Hello, !;
}
         


        

Answer 1

If you want to take a component class as a parameter (vs an instance), use React.ComponentClass:

function renderGreeting(Elem: React.ComponentClass) {
    return Hello, !;
}