LinuxLinks takes a look at Clapper, a GNOME media player built using GJS with GTK4 toolkit.

Clapper – GNOME media player built using GJS with GTK4 toolkit

Clapper is a GNOME media player. It's built using GJS with the GTK4 toolkit so you'll see some of the new GTK4 features in action. 

Clapper – GNOME media player built using GJS with GTK4 toolkit