From d84b738cddbb960398940cbb012740e82bba8c45 Mon Sep 17 00:00:00 2001
From: Rostislav Wolny <rosta.wolny@automattic.com>
Date: Tue, 3 Oct 2023 13:30:31 +0200
Subject: [PATCH] Enqueue public.js to be loaded as deferred on WP 6.3+

[MAILPOET-5623]
---
 mailpoet/lib/Form/AssetsController.php | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/mailpoet/lib/Form/AssetsController.php b/mailpoet/lib/Form/AssetsController.php
index 3f7da0ec53..a1659474a3 100644
--- a/mailpoet/lib/Form/AssetsController.php
+++ b/mailpoet/lib/Form/AssetsController.php
@@ -78,12 +78,23 @@ class AssetsController {
       Env::$assetsUrl . '/dist/css/' . $this->renderer->getCssAsset('mailpoet-public.css')
     );
 
+    $enqueuePlacementParams = [
+      'in_footer' => true,
+      'strategy' => 'defer',
+    ];
+
+    // BC for WP < 6.3 - Can be removed after we drop support for WP 6.2
+    global $wp_version;
+    if (version_compare($wp_version, '6.3', '<')) {
+      $enqueuePlacementParams = true;
+    }
+    
     $this->wp->wpEnqueueScript(
       'mailpoet_public',
       Env::$assetsUrl . '/dist/js/' . $this->renderer->getJsAsset('public.js'),
       ['jquery'],
       Env::$version,
-      true
+      $enqueuePlacementParams
     );
 
     $ajaxFailedErrorMessage = __('An error has happened while performing a request, please try again later.', 'mailpoet');