Fix jsx types

Author: TrySound

src/system.d.ts

@@ -91,7 +91,7 @@ export declare function useResponsive(): <T>(values: ReadonlyArray<T>) => T;
 
 export declare function ResponsiveProvider(options: {
   children: React.ReactNode;
-}): React.ReactNode;
+}): JSX.Element;
 
 export declare function useGlobalResponsive(): <T>(
   values: ReadonlyArray<T>

tsconfig.json

@@ -2,6 +2,7 @@
   "compilerOptions": {
     "noEmit": true,
     "strict": true,
-    "esModuleInterop": true
+    "esModuleInterop": true,
+    "jsx": "react-jsx"
   }
 }