title: Is the push notification feature in the firebase not supported by node.js?
body: <p>I'm currently working on the Nuxt.js + firebase project.
  I succeeded in getting a token from the device from the console window after 'npm run dev'. However, when I try to 'npm run start' after 'npm run build', I can't see the token of the device in the console window.</p>
  
  <p>According to Google's page, the Cloud Messaging feature is not supported on node.js. So, Nuxt.js can't write the push notification feature on the firebase?</p>
  
  <p><a href="https://firebase.google.com/docs/web/setup#namespace" rel="nofollow noreferrer">https://firebase.google.com/docs/web/setup#namespace</a></p>