Examine source code of Twitch Chat Sounds

{
  "name": "Twitch Chat Sounds",
  "description": "Play a configurable sound when chat wakes up on selected Twitch channels.",
  "version": "1.1",
  "manifest_version": 3,
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "https://www.twitch.tv/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    },
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.twitch.tv/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "sound/chat.mp3"
      ],
      "matches": [
        "https://www.twitch.tv/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "turbo@twitchchatsounds",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}