import Database from 'better-sqlite3';
import { CalculationResult } from '../../math/schemas.js';
export type StoredCalculation = CalculationResult & {
    id: string;
    sessionId?: string;
};
export declare class CalculationRepository {
    private db;
    constructor(db: Database.Database);
    create(calculation: StoredCalculation): void;
    findById(id: string): StoredCalculation | null;
    findBySessionId(sessionId: string): StoredCalculation[];
    findAll(limit?: number): StoredCalculation[];
    private rowToCalculation;
}
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