/**
 * Parses an ISO-8601 string into a JS Date.
 *
 * Supports:
 *  - YYYY-MM-DD
 *  - YYYY-MM-DDThh:mm:ss(.sss)?(Z|±hh:mm)?
 *
 * @param {string} isoString
 * @returns {Date}
 * @throws {TypeError} if input isn’t a string
 * @throws {Error} if string is not a valid ISO-8601 date
 */
export declare function fromISOToDate(isoString: string): Date | null;
export declare function getDateInputType(userAgent?: string): "date" | "text";
export declare function getDateInputPlaceholder(locale: string): string;
export declare function getDateInputDisplayValue(value: string, locale: string): string;