Cannot build a typed interface for this module. You should annotate the exports of this module with types. Missing type annotation at function return: [signature-verification-failure] I got this error when I run "npm run flow"
//@flow
import { Component } from 'react'
import * as React from 'react';
import './App.css';
class App extends Component<any> {
render() {
return (
<div className="App">
</div>
);
}
}