Examine source code of Bandcamp Scrobbler

{
  "name": "Bandcamp Scrobbler",
  "version": "1.8",
  "description": "Scrobble albums on Bandcamp to Last.fm",
  "icons": {
    "16": "resources/icon16.png",
    "48": "resources/icon48.png",
    "128": "resources/icon128.png"
  },
  "action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "scripting",
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "https://*.bandcamp.com/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "bandcamp-scrobbler@benwormald.co.uk"
    }
  },
  "manifest_version": 3
}