discord.js

router.get('/callback', catchAsync(async (req, res) => {
  if (!req.query.code) throw new Error('NoCodeProvided');
  const code = req.query.code;
  const creds = btoa(`${CLIENT_ID}:${CLIENT_SECRET}`);
  const response = await fetch(`https://discordapp.com/api/oauth2/token?grant_type=authorization_code&code=${code}&redirect_uri=${redirect}`,
    {
      method: 'POST',
      headers: {
        Authorization: `Basic ${creds}`,
      },
    });
  const json = await response.json();
  res.redirect(`/?token=${json.access_token}`);
}));