JavaScript

Front-end technology stacks tend to move quickly. At PreviousNext, we are constantly evolving the tech stack to take advantage of best practices.

Jest is the defacto standard for testing in modern JavaScript, but until now, we haven't been able to leverage it for testing in Drupal. Thanks to twig-testing-library, that's changed.

In a previous article Using ES6 in your Drupal Components, we discussed writing our javascript using the modern ES6 methods and transpiling down for older browsers. It still used jQuery as an interim step to make the process of refactoring existing components a little easier. But let's go all the way now and pull out jQuery, leaving only modern, vanilla javascript.

With the release of Drupal 8.4.x and its use of ES6 (Ecmascript 2015) in Drupal core we’ve started the task of updating our jQuery plugins/widgets to use the new syntax. This post will cover what we’ve learnt so far and what the benefits are of doing this.