Examine source code of FreeWatchIMDb

{
  "manifest_version": 3,
  "name": "free_watch_imdb",
  "version": "1.2.2",
  "description": "Allowing users to stream movies and TV shows for free from IMDB pages.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://www.imdb.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "freewatchimdb@nandhudomain.com"
    }
  },
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.imdb.com/*"
      ],
      "js": [
        "core/utils.js",
        "core/index.js"
      ],
      "run_at": "document_end"
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}