Examine source code of Stream Notifier for Twitch, YouTube & Kick

{
  "manifest_version": 3,
  "name": "Stream Notifier for Twitch, YouTube & Kick",
  "version": "1.0.2",
  "description": "Get notified when your favorite streamers go live",
  "permissions": [
    "storage",
    "alarms",
    "notifications",
    "identity",
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "https://www.twitch.tv/*",
    "https://www.youtube.com/*",
    "https://kick.com/*",
    "https://api.twitch.tv/*",
    "https://www.googleapis.com/*",
    "https://yt3.ggpht.com/*",
    "https://i.ytimg.com/*",
    "https://lh3.googleusercontent.com/*",
    "https://iyslphcpptayarkowfji.supabase.co/*",
    "https://player.twitch.tv/*",
    "https://www.youtube.com/embed/*",
    "https://player.kick.com/*"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_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"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; frame-src https://player.twitch.tv https://www.youtube.com https://www.youtube-nocookie.com https://player.kick.com https://kick.com;"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "stream-notifier@aitha.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}