uninstaller added

assets/js/admin.js

@@ -12,6 +12,7 @@
     let errorMessage = $( '.error-message' );
     let bookingForm = $( '#ste-booking-metabox-form' );
     let bookingMetaBoxMessage = $( '#ste-booking-metabox-message' );
+
     parcelSubmitButton.on("click", function (e) {
         e.preventDefault();
         parcelSubmitButton.prop( 'disabled', true );

includes/Admin/STE_Metabox.php

@@ -81,7 +81,7 @@ public function metabox_view_handler() {
 		 *
 		 * @return void
 		 */
-		public function set_shipping_info( $order ) {
+		public function set_shipping_info( \WC_Order $order ) {
 			$this->shipping_info['recipient_name']    = '' !== trim( $order->get_formatted_shipping_full_name() ) ? $order->get_formatted_shipping_full_name() : $order->get_formatted_billing_full_name();
 			$this->shipping_info['recipient_mobile']  = $order->get_billing_phone();
 			$this->shipping_info['recipient_city']    = '' !== trim( $order->get_shipping_city() ) ? $order->get_shipping_city() : $order->get_billing_city();

uninstall.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * This will be triggered on plugin uninstall. This will remove the eCourier configurations.
+ *
+ * @package ShipToEcourier
+ */
+
+if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
+	die;
+}
+
+// Remove eCourier API credentials.
+if ( get_option( 'ste_settings' ) ) {
+	delete_option( 'ste_settings' );
+}