/**
 * Return the PlainTime portion extracted from an ISO PlainDateTime string.
 *
 * - Extracts time components from a PlainDateTime.
 * - Returns "" for invalid input.
 *
 * @param value ISO PlainDateTime string
 * @returns ISO PlainTime string or "" on invalid input
 *
 * @example chopDate("2024-02-29T12:34:56") // "12:34:56"
 * @example chopDate("invalid") // ""
 */
export declare function chopDate(value: string): string;