Examine source code of Torn Radio Player

{
  "name": "Torn Radio Player",
  "description": "An integrated radio player for Torn.",
  "version": "1.2.6",
  "manifest_version": 3,
  "permissions": [
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "service_worker": "background/background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.torn.com/*"
      ],
      "js": [
        "node_modules/webextension-polyfill/dist/browser-polyfill.js",
        "content/ui.js",
        "content/content.js"
      ],
      "css": [
        "content/styles.css"
      ]
    }
  ],
  "externally_connectable": {
    "matches": [
      "*://www.torn.com/*"
    ]
  },
  "icons": {
    "128": "TRP2.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{123e4567-e89b-12d3-a456-426614169000}"
    }
  }
}