type objKey = {
    [key: string]: any;
};
/**
 * Recursively removes falsy values from an object, except those specified in `exclude`.
 * @template T - The object type.
 * @param obj - The object to clean.
 * @param exclude - An array of values to be preserved even if they are falsy (default: `[]`).
 * @param seen - To detect cyclic references (default: `new WeakSet<object>()`).
 * @returns A new object without the falsy values.
 * @example
 * @see {@link https://ilkhoeri.github.io/cretex/clean Docs}
 */
export declare function clean<T extends objKey>(obj: T, exclude?: unknown[], seen?: WeakSet<object>): T;
export {};