Examine source code of Random Bookmark

{
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "random-bookmark@stevenaleong.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "name": "Random Bookmark",
  "version": "2.4.0",
  "author": "Steven Aleong",
  "developer": {
    "name": "Steven Aleong",
    "url": "https://stevenaleong.com"
  },
  "description": "Load up a random bookmark! Features: Create groups of bookmark folders to randomize from, randomize a folder with right click, tab options, and more! Does not work with Firefox for Android unfortunately, add-ons are not able to access bookmarks on androids.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/icon-19.png",
      "38": "icons/icon-38.png"
    },
    "default_title": "Random Bookmark"
  },
  "background": {
    "scripts": [
      "shared.js",
      "core.js",
      "background.js"
    ]
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+Shift+R"
      }
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage",
    "bookmarks",
    "tabs",
    "menus",
    "unlimitedStorage",
    "notifications"
  ]
}