fullstackopen-notes/parts/2/renderingCollections/src/main.jsx

import ReactDOM from "react-dom/client";
import App from "./App";

import axios from "axios";

axios.get("http://localhost:3001/notes").then((response) => {
  const notes = response.data;
  ReactDOM.createRoot(document.getElementById("root")).render(
    <App startingNotes={notes} />
  );
});