WP_Customize_Widgets::sanitize_sidebar_widgets_js_instance( array $widget_ids )

Source

File: wp-includes/class-wp-customize-widgets.php

public function sanitize_sidebar_widgets_js_instance( $widget_ids ) {
		global $wp_registered_widgets;
		$widget_ids = array_values( array_intersect( $widget_ids, array_keys( $wp_registered_widgets ) ) );
		return $widget_ids;
	}