export declare const dateTimeToISO: (date: Date) => string;
export declare const dateToISO: (date: Date) => string;
export declare const stringToDate: (value: string) => Date;
export declare const nullableStringToDate: (value: string | null) => Date | null;
export declare const nullableDateTimeToISO: (date: Date | null) => string | null;
export declare const nullableDateToISO: (date: Date | null) => string | null;
