Possible regression with JSX and 2.3.1: Type '{}' is not assignable to type 'void'

[tkrotoff]

With TypeScript 2.3.1 and 2.4.0-dev.20170427:

import * as React from 'react';
import * as ReactDOM from 'react-dom';

const FooBar1 = () => (
  <div></div>
);

                       // ===>
const FooBar2: React.SFC<void> = () => (
  <div></div>
);

const FooBar3: React.SFC<{}> = () => (
  <div></div>
);

ReactDOM.render(
  <div>
    <FooBar1 />
    
    // ===>
    <FooBar2 />
    // error TS2322: Type '{}' is not assignable to type 'IntrinsicAttributes & void & { children?: ReactNode; }'.
    //   Type '{}' is not assignable to type 'void'.

    <FooBar3 />
  </div>,
  document.getElementById('app')
);

With TypeScript 2.2 => no error.

Is it an expected behavior?

[yuit]

@tkrotoff this is expected. props in React is always empty object even when you don't specify any attribute. Here So with the 2.3 we type empty attributes in JSX Expression the same way (e.g it is an empty object literal) that is why it is not assignable to void.

[tkrotoff]

@yuit Ok, thx for the answer