Theme Export: Sort theme.json properties

lib/compat/wordpress-6.0/class-wp-theme-json-gutenberg.php

@@ -159,6 +159,8 @@ public function get_data() {
 			}
 		}
 
+		gutenberg_recursive_ksort( $flattened_theme_json );
+
 		return $flattened_theme_json;
 	}
 

lib/compat/wordpress-6.0/utils.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Generic helper functions
+ *
+ * @since 6.0
+ */
+
+/**
+ * Sorts the keys of an array alphabetically.
+ * The array is passed by reference so it doesn't get returned
+ * which mimiks the behaviour of ksort.
+ *
+ * @param array $array The array to sort, passed by reference.
+ */
+function gutenberg_recursive_ksort( &$array ) {
+	foreach ( $array as &$value ) {
+		if ( is_array( $value ) ) {
+			gutenberg_recursive_ksort( $value );
+		}
+	}
+	ksort( $array );
+}

lib/load.php

@@ -99,6 +99,7 @@ function gutenberg_is_experiment_enabled( $name ) {
 require __DIR__ . '/compat/wordpress-6.0/class-gutenberg-rest-edit-site-export-controller.php';
 require __DIR__ . '/compat/wordpress-6.0/class-wp-rest-block-patterns-controller.php';
 require __DIR__ . '/compat/wordpress-6.0/class-wp-rest-block-pattern-categories-controller.php';
+require __DIR__ . '/compat/wordpress-6.0/utils.php';
 require __DIR__ . '/compat/wordpress-6.0/class-wp-theme-json-gutenberg.php';
 require __DIR__ . '/compat/wordpress-6.0/rest-api.php';
 require __DIR__ . '/compat/wordpress-6.0/block-patterns.php';