/**
 * Returns the local plain datetime (date + time) extracted from a zoned datetime string.
 *
 * - Extracts both date and time components from a ZonedDateTime.
 * - Returns "" for invalid input.
 *
 * @param value ISO 8601 zoned datetime string
 * @returns Local plain datetime string or "" for invalid
 *
 * @example chopZonedTimezone("2024-02-29T14:30:45.123-05:00[America/New_York]") // "2024-02-29T14:30:45.123"
 * @example chopZonedTimezone("invalid") // ""
 */
export declare function chopZonedTimezone(value: string): string;