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Stylex

StyleX is the styling system for ambitious user interfaces.

Install / Use

/learn @facebook/Stylex
About this skill

Quality Score

0/100

Supported Platforms

Universal

README

StyleX · GitHub license npm version tests PRs Welcome

StyleX is a JavaScript library for defining styles for optimized user interfaces.

Documentation

Documentation Website

Documentation for individual packages can be found in their respective README files. Start with @stylexjs/stylex.

Example

Here is a simple example of StyleX use:

import * as stylex from '@stylexjs/stylex';

const styles = stylex.create({
  root: {
    padding: 10,
  },
  element: {
    backgroundColor: 'red',
  },
});

const styleProps = stylex.props(styles.root, styles.element);

Development

This is the development monorepo for StyleX.

Structure

Tasks

First, yarn install the yarn workspace.

  • build
    • Use yarn build to run the build script in every package.
    • Use yarn workspace <package-name> build to run the build script for a specific package.
  • test
    • Use yarn test to run tests for every package.
    • Use yarn workspace <package-name> test to run the test script for a specific package. More details can be found in the contributing guide below.

Contributing

Development happens in the open on GitHub and we are grateful for contributions including bug fixes, improvements, and ideas.

Code of Conduct

This project expects all participants to adhere to Meta's OSS Code of Conduct. Please read the full text so that you can understand what actions will and will not be tolerated.

Contributing Guide

Read the contributing guide to learn about our development process, how to propose bug fixes and improvements, and how to build and test your changes.

Architectural Principles

Before proposing a change or addition to the StyleX API, you should familiarize yourself with the goals and architectural principles of the project.

License

StyleX is MIT licensed.

View on GitHub
GitHub Stars9.1k
CategoryDevelopment
Updated3h ago
Forks400

Languages

JavaScript

Security Score

95/100

Audited on Apr 1, 2026

No findings