import { Currency } from '../../../shared/enums.js';
import type { LedgerProto } from '../../../shared/types/index.js';
export declare function validateExchangeRate(businessId: string, ledgerRecords: LedgerProto[], amount: number, defaultLocalCurrency: Currency): string | true;
export declare function calculateExchangeRate(businessId: string, ledgerRecords: LedgerProto[], defaultLocalCurrency: Currency): number | undefined;