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wp-content/plugins/jetpack-boost/compatibility/beaver-builder.php

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+<?php
+/**
+ * Compatibility for Beaver Builder (both lite and Pro versions).
+ *
+ * @package automattic/jetpack-boost
+ */
+
+namespace Automattic\Jetpack_Boost\Compatibility\Beaver_Builder;
+
+/**
+ * Exclude Beaver Builder custom post types from list of posts to generate critical CSS for.
+ *
+ * @param array $post_types Post types.
+ */
+function exclude_beaver_builder_custom_post_types( $post_types ) {
+	unset( $post_types['fl-builder-template'] );
+	unset( $post_types['fl-theme-layout'] );
+
+	return $post_types;
+}
+
+add_filter( 'jetpack_boost_critical_css_post_types_singular', __NAMESPACE__ . '\exclude_beaver_builder_custom_post_types' );
+add_filter( 'jetpack_boost_critical_css_post_types_archives', __NAMESPACE__ . '\exclude_beaver_builder_custom_post_types' );
+
+/**
+ * Disable JS concatenation when Beaver Builder editor is active.
+ * The editor depends on specific script execution order that concatenation breaks.
+ *
+ * @param bool   $do_concat Whether to concatenate the script.
+ * @param string $handle    Script handle.
+ * @return bool
+ */
+function disable_js_concatenate_for_beaver_builder( $do_concat, $handle ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
+	// Check for fl_builder query parameter (BB editor mode)
+	// BB uses ?fl_builder (no value) to indicate editor mode
+	$is_bb_editor = filter_input( INPUT_GET, 'fl_builder' );
+	if ( null !== $is_bb_editor ) {
+		return false;
+	}
+
+	// Fallback: Check BB's native function for builder active state
+	// @phan-suppress-next-line PhanUndeclaredClassReference
+	if ( class_exists( 'FLBuilderModel' ) && method_exists( 'FLBuilderModel', 'is_builder_active' ) ) {
+		/** @phan-suppress-next-line PhanUndeclaredClassMethod */
+		if ( \FLBuilderModel::is_builder_active() ) {
+			return false;
+		}
+	}
+
+	return $do_concat;
+}
+
+add_filter( 'js_do_concat', __NAMESPACE__ . '\disable_js_concatenate_for_beaver_builder', 10, 2 );