Examine source code of YouTube Query Cleaner

{
  "manifest_version": 3,
  "name": "YouTube Query Cleaner",
  "short_name": "YT Cleaner",
  "version": "1.0.0",
  "description": "Remove unwanted query parameters like list from YouTube URLs.",
  "permissions": [
    "storage",
    "tabs",
    "webNavigation"
  ],
  "host_permissions": [
    "*://www.youtube.com/*",
    "*://youtube.com/*",
    "*://m.youtube.com/*",
    "*://music.youtube.com/*"
  ],
  "background": {
    "scripts": [
      "background.js",
      "lib/common.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*",
        "*://youtube.com/*",
        "*://m.youtube.com/*",
        "*://music.youtube.com/*"
      ],
      "js": [
        "lib/common.js",
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_title": "YouTube Query Cleaner",
    "default_popup": "popup/popup.html"
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@youtube-query-cleaner.NQxNQ",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}