I'm building a "Login with Google" button in my app using the Google API and the official guide, but i got stuck at decrypting the credentials sent by google as a response when login in with google. I get this error: Uncaught SyntaxError: Cannot use import statement outside a module

This is the form file:

<script src="https://accounts.google.com/gsi/client" async defer></script>
<div id="g_id_onload"
   data-client_id="*********************************************"
   data-callback="handleCredentialResponse"
   data-auto_prompt="false"
   >
</div>
<div class="g_id_signin"
   data-type="standard"
   data-size="large"
   data-width="400"
   data-theme="outline"
   data-text="sign_in_with"
   data-shape="rectangular"
   data-logo_alignment="left">
</div>

And a js file login.js dealing with the response:

import * as jose from '../vendor/jose-main/src/index.ts';

function handleCredentialResponse(response) {
    const { payload, protectedHeader } = await jose.jwtDecrypt(response.credential, secretKey, {
      issuer: 'urn:example:issuer',
      audience: 'urn:example:audience'
    })
    console.log(payload);
    console.log(protectedHeader);
     // decodeJwtResponse() is a custom function defined by you
     // to decode the credential response.
     //const responsePayload = decodeJwtResponse(response.credential);
//
//     console.log("ID: " + responsePayload.sub);
//     console.log('Full Name: ' + responsePayload.name);
//     console.log('Given Name: ' + responsePayload.given_name);
//     console.log('Family Name: ' + responsePayload.family_name);
//     console.log("Image URL: " + responsePayload.picture);
//     console.log("Email: " + responsePayload.email);
  }

Anyone knows how to solve this issue?