declare type Value = string | boolean | number | null | undefined;
declare type ArrayInput = Array<Value>;
declare type ObjectInput = Record<string, Value>;
/**
 * Join class name.
 * This is only support for Object and Array input.
 * And this is not support for nest inoput.
 * If you want support for variadic input, nest input, and so on, you should use {@link https://github.com/lukeed/clsx clsx}.
 * @param input
 * @return Joined string.
 * @example cn(["a", "b"])
 * // "a b"
 * @example cn(["a", "b" && false, "c", 0])
 * // "a c"
 * @example cn({a: true, b: false, c: true})
 * // "a c"
 */
export declare const cn: (input: ArrayInput | ObjectInput) => string;
export {};