Fix react tests w/incorrect weak type assignments

This even includes react.d.ts itself!

Author: sandersn

tests/cases/conformance/jsx/tsxGenericAttributesType9.tsx

@@ -5,12 +5,13 @@
 
 import React = require('react');
 
-export function makeP<P>(Ctor: React.ComponentClass<P>): React.ComponentClass<P> {
+export function makeP<P>(Ctor: React.ComponentClass<P>) {
 	return class extends React.PureComponent<P, void> {
 		public render(): JSX.Element {
 			return (
 				<Ctor {...this.props } />
 			);
 		}
 	};
-}
+}
+

tests/cases/conformance/jsx/tsxStatelessFunctionComponentOverload1.tsx

@@ -38,10 +38,10 @@ declare function TestingOptional(a: {y1: boolean, y2?: number, y3: boolean}): JS
 
 // OK
 const e1 = <TestingOptional />
-const e2 = <TestingOptional extra-prop/>
 const e3 = <TestingOptional y1="hello"/>
 const e4 = <TestingOptional y1="hello" y2={1000} />
 const e5 = <TestingOptional y1 y3/>
 const e6 = <TestingOptional y1 y3 y2={10} />
+const e2 = <TestingOptional y1 y3 extra-prop/>
 
 

tests/lib/react.d.ts

@@ -159,7 +159,8 @@ declare namespace __React {
     type ReactInstance = Component<any, any> | Element;
 
     // Base component for plain JS classes
-    class Component<P, S> implements ComponentLifecycle<P, S> {
+    interface Component<P, S> extends ComponentLifecycle<P, S> { }
+    class Component<P, S> {
         constructor(props?: P, context?: any);
         setState(f: (prevState: S, props: P) => S, callback?: () => any): void;
         setState(state: S, callback?: () => any): void;