<NME> testApp.js
<BEF> ADDFILE
<MSG> Imgur -> ScreenshotTool

<DFF> @@ -0,0 +1,13 @@
+const Gtk = imports.gi.Gtk;
+const Gdk = imports.gi.Gdk;
+log("Gtk.init()");
+Gtk.init(null);
+Gdk.set_program_class('test-gjsgapp');
+log("new Application()")
+let app = new Gtk.Application({
+    application_id: 'org.gnome.Shell.GtkApplicationTest'
+});
+app.connect('activate', function() {
+    print ("Activated");
+});
+app.run(null);

Imgur -> ScreenshotTool