@cssxio/cssx

The CSSX runtime exports create, props, and sx. It also exports the CompiledStyle, StyleInput, SxInput, and StyleMap types.

import * as cssx from '@cssxio/cssx';

const styles = cssx.create({ card: 'p-5 rounded bg-white' });
const props = cssx.props(styles.card, isDisabled && 'is-disabled');

create is a build-time marker. It always throws at runtime. Configure a CSSX compiler plugin before you use it.

props(...inputs) accepts compiled styles, strings, false, null, undefined, and nested arrays. It applies compiled styles from left to right. CSSX keeps strings as written and does not read or merge their classes. It returns { className: string }.

CSSX can replace fully static props calls with a { className } object. Dynamic inputs use the small runtime merge.

See the workspace README for supported utilities, variants, setup, exclusions, and migration guidance.