GObject.type_name

function type_name(type: GObject.Type): String {
    // Gjs wrapper for g_type_name()
}
  

Get the unique name that is assigned to a type ID. Note that this function (like all other GType API) cannot cope with invalid type IDs. %G_TYPE_INVALID may be passed to this function, as may be any other validly registered type ID, but randomized type IDs should not be passed in and will most likely lead to a crash.