Examine source code of Command Palette

{
  "manifest_version": 3,
  "name": "command-palette",
  "version": "1.0",
  "description": "An extension that introduces a 'Command Palette', taking inspiration from Visual Studio Code. Includes a 'New Tab' action, a 'Restore Previous Session' action and includes all of your bookmarks and bookmarklets as runnable actions.",
  "browser_specific_settings": {
    "gecko": {
      "id": "command-palette@sempeters.nl",
      "strict_min_version": "132.0"
    }
  },
  "action": {
    "default_title": "Command Palette",
    "default_popup": "index.html"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Alt+P"
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "tabs",
    "bookmarks",
    "sessions"
  ],
  "host_permissions": [
    "<all_urls>"
  ]
}