Examine source code of Aar318's Stream Notifier

{
  "manifest_version": 3,
  "name": "Aar318's Stream Notifier",
  "version": "3.41.0.2",
  "description": "Get desktop notifications for Kick and Twitch streamers.",
  "permissions": [
    "contextMenus",
    "notifications",
    "storage"
  ],
  "host_permissions": [
    "https://*.twitch.tv/*",
    "https://*.kick.com/*",
    "https://gql.twitch.tv/gql",
    "*://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.twitch.tv/*",
        "https://*.kick.com/*",
        "*://*/*"
      ],
      "js": [
        "stream-notifier.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "Stream Notifier"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "stream-notifier@aar318",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  }
}