import type { MonthData } from '../../types.js';
export declare class MonthlySummaryCalculator {
    calculateAverages(sortedMonths: MonthData[]): {
        avgIncome: number;
        avgExpenses: number;
        avgInvestments: number;
        avgTraditionalSavings: number;
        avgTotalSavings: number;
        avgTraditionalSavingsRate: number;
        avgTotalSavingsRate: number;
    };
}
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