Here are the steps to use the development tools on Drupal 8:
1. Install Drupal Console: Drupal Console is a command-line interface tool that helps you generate boilerplate code, manage configuration, and execute common Drupal 8 tasks. You can install Drupal Console using Composer by typing the following command in your terminal: `composer require drupal/console`.
1. Install Devel module: The Devel module provides various tools and functions to assist with Drupal 8 development. To install it, type the following command in your terminal: `composer require drupal/devel`.
1. Enable development mode: To enable development mode, go to the `settings.php` file located in `sites/default` and set the `$config[‘system.performance’][‘css’][‘preprocess’]` and `$config[‘system.performance’][‘js’][‘preprocess’]` settings to `FALSE`. This disables CSS and JavaScript aggregation, making it easier to debug and inspect your code.
1. Use Twig debugging: Drupal 8 uses Twig as its templating engine. To enable Twig debugging, go to the `services.yml` file located in `sites/default` and set the `debug` parameter to `true`. This will display the file name and line number of the Twig template that you are currently viewing.
1. Inspect and debug with browser tools: Use browser tools like Chrome DevTools to inspect and debug your Drupal 8 website. You can inspect HTML, CSS, and JavaScript, view network requests, and troubleshoot issues.
By using these tools, you can streamline Drupal 8 development and improve your site’s performance and functionality.