import { COABalanceGroupedByPeriod } from '../coaBalance';
/**
 * Given an array of COABalancesGroupedByPeriod, this function will add all balances
 * across timeframes for every balance
 * @param coaBalancesByPeriodArray
 * @returns
 */
export declare const getSumOfBalancesByGroupedByPeriod: (coaBalancesByPeriodArray: COABalanceGroupedByPeriod[]) => COABalanceGroupedByPeriod | undefined;