Replace interface with type.

src/components/AuthUser/SignInForm/SignInForm.tsx

@@ -29,10 +29,10 @@ export const SignInForm: FC = () => {
   const history = useHistory();
   const { setRole } = useContext(AuthContext);
 
-  interface FormData {
+  type FormData = {
     username: string;
     password: string;
-  }
+  };
 
   const defaultValues: FormData = {
     username: '',