/**
 * A simple utility for conditionally joining class names together for React components. It
 * extracts all of the strings from the provided arguments and joins them together with spaces. If an
 * object is passed, the keys with truthy values are used. Arguments like `false`, `null`, and
 * `undefined` are ignored. Adapted from
 * [JedWatson's classnames](https://github.com/JedWatson/classnames).
 * @param {...Any}
 * @returns {String} className suitable for a React component.
 * @public
 */
export declare function toClassName(...args: any[]): any;