Using shell object in gjs

shell_object_sample.js

// LD_LIBRARY_PATH=/usr/lib64/gnome-shell/ gjs shell_object_sample.js

const GIRepository = imports.gi.GIRepository;
const GLib = imports.gi.GLib;
const Gio = imports.gi.Gio;

function findLib(path, prefix) {
  const libdir = Gio.File.new_for_path(path);
  const files = libdir.enumerate_children('', Gio.FileQueryInfoFlags.NONE, null);
  for (;;) {
    const finfo = files.next_file(null);
    if (!finfo) break;
    if (finfo.get_file_type() == Gio.FileType.DIRECTORY && finfo.get_name().startsWith(prefix)) {
      return GLib.build_filenamev([path, finfo.get_name()]);
    }
  }
  return null;
}

GIRepository.Repository.prepend_search_path('/usr/lib64/gnome-shell');
GIRepository.Repository.prepend_search_path(findLib('/usr/lib64', 'mutter-'));

const Shell = imports.gi.Shell;
const appSys = Shell.AppSystem.get_default();
print(appSys.get_installed().map(x => x.get_name()).join('\n'));