hoc.ts

declare function bind<T>(component: React.ComponentType<T & InjectedProps>): React.ComponentType<T>;

declare class A<B> extends React.Component<PubProps<B> & InjectedProps> { }
const APrimeComponent = bind(A);
// type inferred to: React.ComponentType<PubProps<unknown>>

declare function AFunc<B>(props: PubProps<B> & InjectedProps): React.ReactElement;
const AFuncPrimeComponent = bind(AFunc);
// type inferred to: React.ComponentType<PubProps<unknown>>

declare function bindHack<T>(component: (props: T & InjectedProps) => React.ReactElement): (props: T) => React.ReactElement;
const AFuncPrimeComponentHack = bindHack(AFunc);
// type inferred correctly! AFuncPrimeComponentHack is generic

const render = () => <AFuncPrimeComponentHack foo={5} />;