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

Documentation Website

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

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.apply(styles.root, styles.element);

This is the development monorepo for StyleX.

• .github
  • Contains workflows used by GitHub Actions.
  • Contains issue templates and contribution guidelines.
• apps
  • Contains example apps using StyleX and integration with build tools.
• packages
  • Contains the individual packages managed in the monorepo.
  • babel-plugin
  • dev-runtime
  • eslint-plugin
  • nextjs-plugin
  • open-props
  • rollup-plugin
  • shared
  • stylex
  • webpack-plugin

First, npm install the npm workspace.

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

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

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.

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.

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

StyleX is MIT licensed.