/**
 * Return true if two PlainDateTime ISO strings represent the same instant of local date/time components.
 *
 * - Compares all date and time components.
 * - Returns false if either input is invalid.
 *
 * @param value1 first ISO PlainDateTime string
 * @param value2 second ISO PlainDateTime string
 * @returns boolean indicating whether both date-times are equal component-wise
 *
 * @example areDateTimesEqual("2024-02-29T12:34:56", "2024-02-29T12:34:56") // true
 * @example areDateTimesEqual("2024-02-29T12:34:56", "2024-02-29T12:34:57") // false
 * @example areDateTimesEqual("2024-02-29T12:34:56", "invalid") // false
 */
export declare function areDateTimesEqual(value1: string, value2: string): boolean;