Examine source code of Youtube Shorts Blocker

{
  "manifest_version": 3,
  "name": "Youtube Shorts Blocker",
  "version": "1.2.1",
  "description": "Removes the shorts from Youtube",
  "icons": {
    "32": "icons/block-shorts_x32.png",
    "48": "icons/block-shorts_x48.png",
    "64": "icons/block-shorts_x64.png"
  },
  "action": {
    "default_title": "Youtube Shorts Blocker",
    "default_icon": {
      "32": "icons/block-shorts_x32.png",
      "48": "icons/block-shorts_x48.png",
      "64": "icons/block-shorts_x64.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage",
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "https://www.youtube.com/shorts/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "noShorts.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "author": "JF Studio",
  "homepage_url": "https://jfstudio.dev",
  "developer": {
    "name": "JF Studio",
    "url": "https://ko-fi.com/jfstudio"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-shorts-blocker@jfstudio.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collection": {
          "storage": {
            "purpose": "To save user preferences for where to hide YouTube Shorts (homepage, search, panel, menu) and whether to block Shorts video playback",
            "usage": "All settings are stored locally on the user's device using browser.storage.local API. No data is transmitted to external servers."
          },
          "declarativeNetRequest": {
            "purpose": "To redirect YouTube Shorts video URLs when the user has enabled the 'Disable video playback' option",
            "usage": "Creates a local redirect rule that blocks navigation to /shorts/ URLs and shows a blocking page instead. All processing is done locally in the browser."
          }
        },
        "privacy_policy_url": "https://jfstudio.dev/privacy-policies/youtube-shorts-blocker/PRIVACY.md"
      }
    }
  }
}