Issue #3464340 by herved, ahsannazir, smustgrave, longwave, nod_: JS errors...

      // Start by finding all potentially active links.

      const path = drupalSettings.path;

      const queryString = JSON.stringify(path.currentQuery);

      const querySelector = path.currentQuery

        ? `[data-drupal-link-query='${queryString}']`

      const querySelector = queryString

        ? `[data-drupal-link-query="${CSS.escape(queryString)}"]`

        : ':not([data-drupal-link-query])';

      const originalSelectors = [

        `[data-drupal-link-system-path="${path.currentPath}"]`,

        `[data-drupal-link-system-path="${CSS.escape(path.currentPath)}"]`,

      ];

      let selectors;

<?php

declare(strict_types=1);

namespace Drupal\Tests\system\FunctionalJavascript;

use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

/**

 * Tests active link JS behavior.

 *

 * @see Drupal.behaviors.activeLinks

 *

 * @group system

 */

class ActiveLinkTest extends WebDriverTestBase {

  /**

   * {@inheritdoc}

   */

  protected $defaultTheme = 'stark';

  /**

   * Ensures no JS error is thrown with query strings containing special chars.

   */

  public function testQueryStringQuotes(): void {

    $user = $this->createUser();

    $this->drupalLogin($user);

    $this->drupalGet($this->getSession()->getCurrentUrl(), ['query' => ['foo' => "\"'[](){}*+~>|\\/:;,.!@#$%^&-_=?<>"]]);

    $this->failOnJavaScriptErrors();

  }

}