TypeScript compile error: JSX element type 'ReactElement<any> | null' is not a constructor function for JSX elements.

[gaspard]

TypeScript Version: 2.3.2

Code

// strictNullCheck: true
namespace React {
  interface StatelessComponent<P> {
    (props: P & { children?: ReactNode }, context?: any): ReactElement<any> | null;
    propTypes?: ValidationMap<P>;
    contextTypes?: ValidationMap<any>;
    defaultProps?: Partial<P>;
    displayName?: string;
  }
}
// All this is valid JSX
const Foo: React.StatelessComponent<any> = () => null
const bar = <Foo/>

Expected behavior:

JSX compilation should allow proper types (including null return).

Actual behavior:

Setting the proper return type for stateless components in @types/react yields a lot of failing other types as seen in this build fail: DefinitelyTyped/DefinitelyTyped#17021

[gaspard]

Some other references:

DefinitelyTyped/DefinitelyTyped#14284

#11566

[gaspard]

Sorry for the trouble. This has been fixed. Using typescript 2.3.4 works (but I have to figure out what version of tsc DefinitelyTyped is using in CI).