Examine source code of URL Rewriter

{
  "manifest_version": 3,
  "name": "URL Rewriter",
  "description": "Rewrites the current tab's URL based on your wildcard rules.",
  "permissions": [
    "tabs",
    "storage",
    "activeTab",
    "scripting",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "url-rewriter@local",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "src/common/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "URL Rewriter",
    "default_icon": {
      "16": "icons/icon-gray-16.png",
      "32": "icons/icon-gray-32.png",
      "48": "icons/icon-gray-48.png",
      "128": "icons/icon-gray-128.png"
    }
  },
  "options_ui": {
    "page": "src/common/options/options.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "version": "1.0.0"
}