Examine source code of Play TikTok Background

{
  "version": "1.0.0",
  "description": "Keep Tiktok videos playing while switching tabs or minimizing the browser.",
  "author": "YouGo",
  "manifest_version": 3,
  "name": "Play TikTok Background",
  "icons": {
    "48": "dist/assets/icons/icon_48.png",
    "96": "dist/assets/icons/icon_96.png"
  },
  "action": {
    "default_icon": {
      "48": "dist/assets/icons/icon_48.png",
      "96": "dist/assets/icons/icon_96.png"
    },
    "default_popup": "dist/popup/popup.html",
    "default_title": "PTB"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://*.tiktok.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.tiktok.com/*"
      ],
      "js": [
        "dist/browser-polyfill.js",
        "dist/content/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "dist/browser-polyfill.js",
      "dist/background/background.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b3f9e2a1-6c4d-4f2a-9b8e-1a2c3d4f5e6a}",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "options_ui": {
    "page": "dist/popup/settings.html",
    "open_in_tab": true
  }
}