import type { TimelessDateString } from '../types/index.js';
export declare function stringNumberRounded(number: string): number;
export declare function numberRounded(number: number): number;
export declare function isTimelessDateString(date: string): date is TimelessDateString;
export declare function isUUID(raw: string): boolean;
/**
 * @description
 * Extract month from description
 * @param rawDescription string - description to extract month from
 * @param eventDate Date - optional, if provided, will use it to determine year
 * @returns month in format yyyy-mm, else null
 */
export declare function getMonthFromDescription(rawDescription: string, eventDate?: Date): string[] | null;
export declare function dateToTimelessDateString(date: Date): TimelessDateString;
/**
 * Parses a `TimelessDateString` (e.g. "2026-05-01") into a Date at local midnight.
 *
 * Use this instead of `new Date(timelessDate)`, which parses the string as UTC midnight and
 * therefore shifts to the previous day in timezones west of UTC — breaking subsequent local-time
 * `date-fns` operations (`addMonths`, `format`, `dateToTimelessDateString`, …).
 */
export declare function timelessDateStringToLocalDate(date: TimelessDateString): Date;
export declare function optionalDateToTimelessDateString(date?: Date | null): TimelessDateString | null;
export declare function hashStringToInt(text: string): number;
export declare function reassureOwnerIdExists<T extends {
    ownerId?: string | null | void;
}>(params: T, contextOwnerId: string): Omit<T, 'ownerId'> & {
    ownerId: string;
};