export declare const DateUtils: {
    startOfDayLocal: (d: Date) => Date;
    isSameDay: (a: Date | null, b: Date | null) => boolean;
    clampDateToMonth: (d: Date, monthRef: Date) => Date;
    toLocalISODate: (d: Date) => string;
    parseLocalISO: (iso: string | null) => Date | null;
    compareDates: (a: Date, b: Date) => number;
    isBetweenInclusive: (d: Date, a: Date, b: Date) => boolean;
};
