https://codesandbox.io/s/2002qx2q1n
index.js：
Ids A B C D E F G H I J
4411 24 2 55 26 1
4411 24 2 54 26 0
4412 22 4 54 26 0
4412 18 8 54 26 0
7401 12 14 54 26 0
7401 0 25 53 26 0
7402 24 2 54 26 0
7402 25 1 54 26 0
10891 16 10 54 26 0
10891 3 23 54 26 0
10891 5 10 6 15 0
Hello.js：
Ids A B C D E F G H I J
4411 24 2 55 26 1 24 2 54 26 0
4412 22 4 54 26 0 18 8 54 26 0
7401 12 14 54 26 0 0 25 53 26 0
7402 24 2 54 26 0 25 1 54 26 0
10891 16 10 54 26 0 3 23 54 26 0
10891 5 10 6 15 0
记录import Hello from './Hello';
const App = () => (
<div style={styles}>
<Hello name="CodeSandbox" />
<h2>Start editing to see some magic happen {'\u2728'}</h2>
</div>
);
export default App
。如何让import React from 'react';
import App from './index';
console.log('App:', App)
const Hello = ({ name }) => <h1>Hello {name}!</h1>;
export default Hello
成为已定义的组件？特别是，我正在尝试从Hello上访问App上的静态var（App: null）。