Examine source code of YouTube Silence Skipper

{
  "manifest_version": 3,
  "name": "YouTube Silence Skipper",
  "version": "3.2",
  "description": "Automatically skips silent periods in YouTube videos for a smoother viewing experience.",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "webRequest",
    "storage"
  ],
  "action": {
    "default_title": "YouTube Silence Skipper",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "host_permissions": [
    "https://www.youtube.com/*",
    "https://youtube-silenceskipper.com/*",
    "https://payment.youtube-silenceskipper.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "toast.css"
      ]
    },
    {
      "matches": [
        "https://youtube-silenceskipper.com/activate-pro",
        "https://youtube-silenceskipper.com/activate-pro.html"
      ],
      "js": [
        "activation-content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "shared-constants.js",
        "icons/*.png"
      ],
      "matches": [
        "https://www.youtube.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-silence-skipper@youtube-silenceskipper.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo"
        ]
      }
    }
  }
}