refactor

web/src/App.js

@@ -0,0 +1,29 @@
+import React from 'react';
+import logo from './logo.svg';
+import './App.css';
+import useFetch from './useFetch';
+
+function App() {
+  const resp = useFetch('http://localhost:3000',{});
+  console.log('FETCH', resp);
+  return (
+    <div className="App">
+      <header className="App-header">
+        <img src={logo} className="App-logo" alt="logo" />
+        <p>
+          Edit <code>src/App.js</code> and save to reload. {resp.data}
+        </p>
+        <a
+          className="App-link"
+          href="https://reactjs.org"
+          target="_blank"
+          rel="noopener noreferrer"
+        >
+          Learn React
+        </a>
+      </header>
+    </div>
+  );
+}
+
+export default App;