initial

wp-content/themes/generatepress/inc/customizer/controls/js/upsell-control.js

@@ -0,0 +1,12 @@
+( function( $, api ) {
+	api.sectionConstructor['gp-upsell-section'] = api.Section.extend( {
+
+		// No events for this type of section.
+		attachEvents: function () {},
+
+		// Always make the section active.
+		isContextuallyActive: function () {
+			return true;
+		}
+	} );
+} )( jQuery, wp.customize );