/**
 * Removes all dark mode classes from a string of class names.
 *
 * This function filters out any class that starts with "dark:" prefix
 * from the provided string of space-separated class names.
 * Results are cached for performance.
 *
 * @param {string} classNames - A string containing one or more CSS class names separated by spaces
 * @returns {string} A new string with all dark mode classes removed
 *
 * @example
 * ```ts
 * stripDark("text-black dark:text-white bg-white dark:bg-black"); // "text-black bg-white"
 * ```
 */
export declare function stripDark(classNames: string): string;