From c0babc4b9e1dc4852a062088161bf5b73b1544d2 Mon Sep 17 00:00:00 2001
From: Andrew Duthie <andrew@andrewduthie.com>
Date: Fri, 29 May 2020 13:14:15 -0400
Subject: [PATCH 1/2] Framework: Enqueue assets for rendered blocks only

---
 lib/class-wp-block.php | 8 ++++++++
 lib/compat.php         | 9 +++++++++
 2 files changed, 17 insertions(+)

diff --git a/lib/class-wp-block.php b/lib/class-wp-block.php
index 6bd82378e39acb..ccc3f5f9423077 100644
--- a/lib/class-wp-block.php
+++ b/lib/class-wp-block.php
@@ -206,6 +206,14 @@ public function render( $options = array() ) {
 			$post          = $global_post;
 		}
 
+		if ( ! empty( $this->block_type->script ) ) {
+			wp_enqueue_script( $this->block_type->script );
+		}
+
+		if ( ! empty( $this->block_type->style ) ) {
+			wp_enqueue_style( $this->block_type->style );
+		}
+
 		/** This filter is documented in src/wp-includes/blocks.php */
 		return apply_filters( 'render_block', $block_content, $this->parsed_block );
 	}
diff --git a/lib/compat.php b/lib/compat.php
index 9dd224adb2f19e..dd44b26ebf9937 100644
--- a/lib/compat.php
+++ b/lib/compat.php
@@ -291,3 +291,12 @@ function gutenberg_render_block_with_assigned_block_context( $pre_render, $parse
 	return $block->render();
 }
 add_filter( 'pre_render_block', 'gutenberg_render_block_with_assigned_block_context', 9, 2 );
+
+/**
+ * Avoid enqueueing block assets of all registered blocks for all posts, instead
+ * deferring to block render mechanics to enqueue scripts, thereby ensuring only
+ * blocks of the content have their assets enqueued.
+ *
+ * @see WP_Block::render
+ */
+remove_action( 'enqueue_block_assets', 'wp_enqueue_registered_block_scripts_and_styles' );

From cf73a7eb4cdadde331fcc341ad62ba4061a8b0c1 Mon Sep 17 00:00:00 2001
From: Andrew Duthie <andrew@andrewduthie.com>
Date: Fri, 5 Jun 2020 16:35:04 -0400
Subject: [PATCH 2/2] Compat: Add core reference ticket

---
 lib/compat.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/compat.php b/lib/compat.php
index dd44b26ebf9937..c97c72b8ef89f5 100644
--- a/lib/compat.php
+++ b/lib/compat.php
@@ -297,6 +297,11 @@ function gutenberg_render_block_with_assigned_block_context( $pre_render, $parse
  * deferring to block render mechanics to enqueue scripts, thereby ensuring only
  * blocks of the content have their assets enqueued.
  *
+ * This can be removed once minimum support for the plugin is outside the range
+ * of the version associated with closure of the following ticket.
+ *
+ * @see https://core.trac.wordpress.org/ticket/50328
+ *
  * @see WP_Block::render
  */
 remove_action( 'enqueue_block_assets', 'wp_enqueue_registered_block_scripts_and_styles' );