import { PricePoint } from "../types";
/**
 * Update historical price data for a symbol
 * @param symbol The stock/ETF symbol to update
 * @param weekStartsOn The day of the week to consider as the first day (0 = Sunday, 1 = Monday, etc.)
 * @returns Promise that resolves when the update is complete
 */
export declare function updateHistoricalPricesDataForSymbol(symbol: string, weekStartsOn?: 0 | 1 | 2 | 3 | 4 | 5 | 6): Promise<void>;
/**
 * Merge two price histories, avoiding duplicates
 * @param existingHistory Existing price history
 * @param newHistory New price history to merge
 * @returns Merged price history without duplicates
 */
export declare function mergePriceHistories(existingHistory: PricePoint[], newHistory: PricePoint[]): PricePoint[];
/**
 * Update historical price data for all assets in the portfolio
 * @param weekStartsOn The day of the week to consider as the first day (0 = Sunday, 1 = Monday, etc.)
 */
export declare function updateData(weekStartsOn?: 0 | 1 | 2 | 3 | 4 | 5 | 6): Promise<void>;