react-style-editor/src/utils/cls.js

A React component that displays and edits CSS, similar to the browser's DevTools.

/*
A tiny alternative to `classnames`, `clsx` and `obj-str`.
*/
const cls = (...args) => {
    const o = [];
    for (const k of args) k && o.push(k);
    return o.join(' ') || null;
};

export default cls;