tests/cases/conformance/jsx/file.tsx(11,21): error TS2322: Type '{ prop1: string; }' is not assignable to type 'IntrinsicAttributes & IntrinsicClassAttributes<BigGreeter> & { children?: ReactNode; }'.
  Property 'prop1' does not exist on type 'IntrinsicAttributes & IntrinsicClassAttributes<BigGreeter> & { children?: ReactNode; }'.
tests/cases/conformance/jsx/file.tsx(14,39): error TS2532: Object is possibly 'undefined'.


==== tests/cases/conformance/jsx/file.tsx (2 errors) ====
    import React = require('react');
    
    class BigGreeter extends React.Component<{ }, {}> {
        render() {
            return <div>Default hi</div>;
        }
        greeting: string;
    }
    
    // Error
    let a = <BigGreeter prop1="hello" />
                        ~~~~~
!!! error TS2322: Type '{ prop1: string; }' is not assignable to type 'IntrinsicAttributes & IntrinsicClassAttributes<BigGreeter> & { children?: ReactNode; }'.
!!! error TS2322:   Property 'prop1' does not exist on type 'IntrinsicAttributes & IntrinsicClassAttributes<BigGreeter> & { children?: ReactNode; }'.
    
    // OK
    let b = <BigGreeter ref={(input) => { this.textInput = input; }} />
                                          ~~~~
!!! error TS2532: Object is possibly 'undefined'.
    let c = <BigGreeter data-extra="hi" />