Examine source code of Tab Sorter

{
  "default_locale": "en",
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "author": "Etienne Schalk",
  "version": "0.6",
  "action": {
    "default_title": "Tab Sorter",
    "default_popup": "tab-sorter.html"
  },
  "background": {
    "page": "background-tab-sorter.html"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "commands": {
    "command_sort_tabs_mru": {
      "description": "Command: Sort Tabs by MRU (Most Recently Used)"
    },
    "command_sort_tabs_favicon_and_title": {
      "description": "Command: Sort Tabs by Favicon then Title",
      "suggested_key": {
        "default": "Ctrl+Shift+Space"
      }
    },
    "command_sort_tabs_title": {
      "description": "Command: Sort Tabs by Title"
    },
    "command_sort_tabs_url": {
      "description": "Command: Sort Tabs by URL"
    },
    "command_sort_tabs_shuffle": {
      "description": "Command: Shuffle Tabs"
    }
  },
  "permissions": [
    "tabs",
    "storage"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-sorter@tab-sorter.com"
    }
  }
}