Interface Props<T>

@deprecated. This was used to allow clients to pass ref and key to createElement, which is no longer necessary due to intersection types. If you need to declare a props object before passing it to createElement or a factory, use ClassAttributes<T>:

var b: Button | null;
var props: ButtonProps & ClassAttributes<Button> = {
    ref: b => button = b, // ok!
    label: "I'm a Button"
};
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