---
title:      "StyleX"
ring:       assess
quadrant:   languages-and-frameworks
tags:       [frontend, styling]
---

Facebook has released [StyleX](https://stylexjs.com/), an open-source JavaScript syntax and compiler for styling web apps. It combines the developer experience of [CSS-in-JS](../methods-and-patterns/css-in-js.html) libraries with the performance and scalability of static CSS using compile-time tools.

It supports frameworks like [React](../languages-and-frameworks/react.html) and [Angular](../languages-and-frameworks/angular.html). Styles are defined using an object syntax and `create()` API, and can be conditionally applied within components.

### Key Features:
- **Atomic CSS**: Minimizes CSS output
- **Type-Safe**: Ensures reliability in large projects
- **Composable**: Facilitates reusable components
- **Fast Performance**: Optimized for speed
- **Scalable and Predictable**: Ideal for large projects

We are eager to evaluate how well StyleX will integrate into our projects.