import { TimeValue } from 'react-aria-components';
import { TimePickerGranularity } from './TimePicker.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 `HH:MM[:SS]` into a React Aria `TimeValue` (or `null`).
 * `parseTime` returns the top-level `@internationalized/date` type while RAC's
 * `TimeValue` comes from its bundled copy — same shape, so bridge with a cast.
 */
export declare const toTimeValue: (iso: string) => TimeValue | null;
/**
 * `TimeValue` → ISO at the active granularity's precision. `Time.toString()`
 * always appends seconds, which would drift minute-level values to `HH:MM:00`.
 */
export declare const toIso: (time: TimeValue | null, granularity: TimePickerGranularity) => string;