/**
 * Converts a date format string from Day.js format to date-fns format.
 *
 * @param dayjsFormat - The date format string in Day.js format.
 * @returns The date format string converted to date-fns format.
 *
 * @throws Will throw an error if a token in the Day.js format string is not found in the format map.
 *
 * @example
 * ```typescript
 * const dayjsFormat = 'YYYY-MM-DD';
 * const dateFnsFormat = convertDayjsToDateFnsFormat(dayjsFormat);
 * console.log(dateFnsFormat); // Output: 'yyyy-MM-dd'
 * ```
 */
export declare function convertDayjsToDateFnsFormat(dayjsFormat: string): string;
