From 4c19578cdfe652550929c5575f497ae687213484 Mon Sep 17 00:00:00 2001
From: Marin Atanasov <8436925+tyxla@users.noreply.github.com>
Date: Mon, 27 Nov 2023 15:34:24 +0200
Subject: [PATCH] Gutenberg: Dequeue editor assets when they aren't in use
 (#34268)

* Gutenberg: Dequeue editor assets when they aren't in use

* Add changelog

* Fix whitespace
---
 .../changelog/update-dequeue-editor-assets-perf      |  4 ++++
 projects/plugins/jetpack/class.jetpack-gutenberg.php | 12 ++++++++++++
 2 files changed, 16 insertions(+)
 create mode 100644 projects/plugins/jetpack/changelog/update-dequeue-editor-assets-perf

diff --git a/projects/plugins/jetpack/changelog/update-dequeue-editor-assets-perf b/projects/plugins/jetpack/changelog/update-dequeue-editor-assets-perf
new file mode 100644
index 0000000000000..e7b9ea82925a1
--- /dev/null
+++ b/projects/plugins/jetpack/changelog/update-dequeue-editor-assets-perf
@@ -0,0 +1,4 @@
+Significance: patch
+Type: enhancement
+
+Gutenberg: Dequeue editor assets when they aren't in use
\ No newline at end of file
diff --git a/projects/plugins/jetpack/class.jetpack-gutenberg.php b/projects/plugins/jetpack/class.jetpack-gutenberg.php
index c671e44d3ebfb..9482e9636301c 100644
--- a/projects/plugins/jetpack/class.jetpack-gutenberg.php
+++ b/projects/plugins/jetpack/class.jetpack-gutenberg.php
@@ -622,6 +622,18 @@ public static function enqueue_block_editor_assets() {
 			return;
 		}
 
+		/**
+		 * This can be called multiple times per page load in the admin, during the `enqueue_block_assets` action.
+		 * These assets are necessary for the admin for editing but are not necessary for each pattern preview.
+		 * Therefore we dequeue them, so they don't load for each pattern preview iframe.
+		 */
+		if ( ! wp_should_load_block_editor_scripts_and_styles() ) {
+			wp_dequeue_script( 'jp-tracks' );
+			wp_dequeue_script( 'jetpack-blocks-editor' );
+
+			return;
+		}
+
 		$status = new Status();
 
 		// Required for Analytics. See _inc/lib/admin-pages/class.jetpack-admin-page.php.