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Firebase || Reference error : app is not defined

I wanted to access app in the second script, but I got an undefined error.

<head>
  <link rel="stylesheet" href="styles.css">
  <script type="module">
    import {
      initializeApp
    } from "https://www.gstatic.com/firebasejs/9.6.1/firebase-app.js";
    import {
      getFirestore,
      collection,
      getDocs
    } from "https://www.gstatic.com/firebasejs/9.6.1/firebase-firestore.js";
    const firebaseConfig = {
      apiKey: "**********",
      authDomain: "**",
      projectId: "*"
    };
    // Initialize Firebase
    const app = initializeApp(firebaseConfig);
    const db = getFirestore(app);
    console.log(app);
  </script>
  <script src="app.js" defer></script>
</head>

I am just using a console.log(app) in the second script tag.

I am also using defer to delay. Below is the output on the console.

Console output

about 4 years ago · Juan Pablo Isaza
Answer question
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