/**
 * Dev-only guard: `minDate` after `maxDate` is a caller misconfig where no date
 * satisfies both, so the blur clamp is disabled (values are left as typed). Warns
 * once per prop change (stripped in production). Deps key on the primitive
 * calendar day, not the `Date` object — an inline `new Date()` bound would
 * otherwise re-run this every render and spam the warning.
 */
export declare const useDevMinMaxWarning: (minDate: Date | null | undefined, maxDate: Date | null | undefined) => void;
/**
 * Dev-only guard: an Invalid Date prop renders with no value (segments show
 * placeholders). Warns so the caller notices rather than debugging a silently
 * empty field. Keyed on booleans, not the `Date` objects, so a fresh-but-valid
 * `Date` each render doesn't churn.
 */
export declare const useDevInvalidValueWarning: (value: Date | null | undefined, defaultValue: Date | null | undefined) => void;