/**
 * Converts a time window string (e.g., "1m") into milliseconds.
 * @param window Time window string
 * @returns Milliseconds equivalent
 */
export declare const parseTimeWindow: (window: string) => number;
/**
 * Swaps the first and second levels of keys in a nested object.
 * @param obj Object with nested key structure to transform
 * @returns Object with first and second level keys swapped
 */
export declare const swapLevels: <K1 extends string | number | symbol, K2 extends string | number | symbol, V>(obj: Record<K1, Record<K2, V>>) => Record<K2, Record<K1, V>>;