export declare function formatCentToDollarText(cent: number, showZeroDecimals?: boolean): string;
/**
 * Converts 24-hour time format to 12-hour format with AM/PM
 */
export declare function format24TimeTo12(time24h: string): string;
export declare function formatISODateToMMDDYYYY(isoDateString: string | null | undefined): string;
export declare function validateMinimumAge(birthDate: string | Date | null | undefined, minimumAge?: number, minimumYear?: number): {
    isValid: boolean;
    age: number | null;
    error?: string;
};