installed plugin W3 Total Cache version 2.3.2

wp-content/plugins/w3-total-cache/UserExperience_Plugin_Jquery.php

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+<?php
+/**
+ * File: UserExperience_Plugin_Jquery.php
+ *
+ * @since 0.14.4
+ *
+ * @package W3TC
+ */
+
+namespace W3TC;
+
+/**
+ * Class: UserExperience_Plugin_Jquery
+ *
+ * @since 0.14.4
+ */
+class UserExperience_Plugin_Jquery {
+	/**
+	 * Config class object.
+	 *
+	 * @since 0.14.4
+	 *
+	 * @var Config
+	 */
+	private $_config = null;
+
+	/**
+	 * Constructor.
+	 *
+	 * @since 0.14.4
+	 */
+	public function __construct() {
+		$this->_config = Dispatcher::config();
+	}
+
+	/**
+	 * Run.
+	 *
+	 * @since 0.14.4
+	 */
+	public function run() {
+		// Disable jquery-migrate on the front-end, if configured.
+		if ( ! is_admin() && $this->_config->get_boolean( 'jquerymigrate.disabled' ) ) {
+			add_action( 'wp_default_scripts', array( $this, 'disable_jquery_migrate' ) );
+		}
+	}
+
+	/**
+	 * Disable jquery-migrate.
+	 *
+	 * @since 0.14.4
+	 *
+	 * @link https://developer.wordpress.org/reference/hooks/wp_default_scripts/
+	 * @link https://core.trac.wordpress.org/browser/tags/5.4/src/wp-includes/class.wp-dependencies.php
+	 *
+	 * @param WP_Scripts $scripts WP_Scripts instance.
+	 */
+	public function disable_jquery_migrate( $scripts ) {
+		if ( isset( $scripts->registered['jquery'] ) ) {
+			$script = $scripts->registered['jquery'];
+
+			if ( $script->deps ) {
+				$script->deps = array_diff( $script->deps, array( 'jquery-migrate' ) );
+			}
+		}
+
+		unset( $scripts->registered['jquery-migrate'] );
+	}
+}