Examine source code of noredirect-II

{
  "manifest_version": 2,
  "name": "noredirect-II",
  "version": "2.0.0",
  "description": "Stop automatic HTTP, Refresh, meta and JavaScript redirects until you choose. Inspired by Kai Liu's legacy NoRedirect.",
  "author": "Maroiu Ionut",
  "browser_specific_settings": {
    "gecko": {
      "id": "noredirect-ii@maroiu-ionut",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.svg",
      "32": "icons/icon-32.svg",
      "48": "icons/icon-48.svg"
    },
    "default_title": "noredirect-II"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "injected.js",
    "icons/*.svg"
  ],
  "icons": {
    "32": "icons/icon-32.svg",
    "48": "icons/icon-48.svg"
  }
}