In this article, we’ll take a look at using the ‘Either monad’ as an alternative to try...catch.

Instead of dealing with a mix of before_filters, Rack-middlewares, controller code and callbacks, an endpoint is just another activity and allows to be customized with the well-established Trailblazer mechanics.

Their high degree of encapsulation makes them a replacement for test factories, too.

Operations completely replace the need for leaky factories.

Dart Sass has replaced Ruby Sass as the canonical implementation of the Sass language.

In brief, @import is being replaced with more explicit @use and @forward rules. Over the next few years Sass @import will be deprecated, and then removed.

using EventTarget.addEventListener(), and this generally replaces using the old HTML event handler attributes.

for example, reactive declarations essentially do the work of React's useMemo, useCallback and useEffect without the boilerplate (or indeed the garbage collection overhead of creating inline functions and arrays on each state change).

You know those useMemo and useCallback hooks? Well, Svelte has something like this. If you declare a variable like this: $: double = counter * 2;, Svelte will recalculate it only if counter changes.

React Static is also a great replacement for the ever popular Create React App CLI. It provides a similar developer experience, zero-config environment, and features, but without boxing you in. If you ever need to customize your build system in React Static, there is no need to eject!

This library is a replacement for Enzyme.