Examine source code of Automatic AdSkipper

{
  "manifest_version": 3,
  "name": "Ad Skipper",
  "description": "Automatic ad skipping extension",
  "version": "4.1",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "action": {
    "default_icon": "icons/128.png"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://youtube.com/"
  ],
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "scripts/youtube.js"
      ],
      "matches": [
        "*://*.youtube.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "miletadulovic98@gmail.com"
    }
  }
}