Examine source code of YouTube Skipper Pro

{
  "manifest_version": 3,
  "name": "YouTube Skipper",
  "version": "7.0",
  "description": "Skips YouTube video intros without fail.",
  "browser_specific_settings": {
    "gecko": {
      "id": "iam@danya.net",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "*://*.youtube.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/skipper-48.png"
    }
  },
  "icons": {
    "48": "icons/skipper-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}