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Creates global CSS Custom Properties (Variables) that can be imported and used within stylex.create calls anywhere within a codebase.

function defineVars<Styles extends {[key: string]: Value}>(
styles: Styles,
): Vars<{[key in keyof Styles]: string}>;

Example use:

You must define your variables as named exports in a .stylex.js (or .stylex.ts) file.

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

export const colors = stylex.defineVars({
accent: 'blue',
background: 'white',
line: 'gray',
textPrimary: 'black',
textSecondary: '#333',

You can then import and use these variables in any stylex.create call.

import * as stylex from '@stylexjs/stylex';
import { colors } from './vars.stylex.js';

const styles = stylex.create({
container: {
color: colors.textPrimary,
backgroundColor: colors.background,