import { DateValue } from 'react-aria-components';
import { UnavailableDateRange } from './DatePicker.types';
/** Reads a string prop, defaulting an unset/non-string value to empty. */
export declare const readString: (prop: string | undefined) => string;
/** Reads a boolean prop, defaulting an unset/non-boolean value to `fallback`. */
export declare const readBool: (prop: boolean | undefined, fallback: boolean) => boolean;
/**
 * Parses an ISO string into a React Aria `DateValue`, or `null` if invalid/empty.
 * The result's type must match the picker's granularity:
 * - `withTime` false → a date-only `CalendarDate` (any time part is dropped).
 * - `withTime` true → a `CalendarDateTime` (a date-only input is widened to
 *   midnight) so the hour/minute segments have a value to edit.
 */
export declare const toDateValue: (iso: string, withTime: boolean) => DateValue | null;
/**
 * `DateValue` → ISO string (`YYYY-MM-DD`, or `YYYY-MM-DDTHH:MM` with time); empty
 * for null. Granularity maxes at minute, so seconds (always `:00`) are trimmed.
 */
export declare const toIso: (date: DateValue | null) => string;
/**
 * Builds an `isDateUnavailable` predicate from a list of `{ from, to }` ISO ranges
 * (inclusive; a single blocked day has `from === to`, and one endpoint alone is
 * treated as that single day). Returns `undefined` when nothing parses, so the
 * picker leaves every date open. Unparseable/empty items are skipped.
 */
export declare const buildIsDateUnavailable: (unavailableDates: ReadonlyArray<UnavailableDateRange> | undefined) => ((date: DateValue) => boolean) | undefined;