Examine source code of Watchr

{
  "manifest_version": 3,
  "name": "Watchr",
  "version": "1.0.7",
  "description": "Watch any wallet on the PKT Cash blockchain",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon32.png"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "js/service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.packetscan.io/*"
      ],
      "js": [
        "js/content-script.js"
      ],
      "css": [
        "css/content-script.css"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "watchr@pkt.watch",
      "strict_min_version": "109.0"
    }
  }
}