Structural typing when specifying component props in TSX

[cnshenj]

TypeScript Version: 2.3.2

Code

type MyComponentProps = {
    name: string;
};

class MyComponent extends React.Component<MyComponentProps, void> {}

class MyClass {
    public name: string;
    public age?: number;
}

const my: MyClass = { name: "Jack", age: 20 };
const props: MyComponentProps = { ...my }; // This works
const c1 = <MyComponent {...my} />; //  error TS2322: Property 'age' does not exist on type 'IntrinsicAttributes & IntrinsicClassAttributes<MyComponent> & Readonly<{ children?: ReactNode; }>...'
const c2 = <MyComponent {...props} />; // This works

[yuit]

@cnshenj thanks for reporting this. This is a duplicate for #15463 ...we have a fix in nightly and will have it for 2.3.3 as well