import type { ChartData, ExchangeConfig } from '../types/types.js';
export declare class DataProvider {
    private exchange;
    private config;
    constructor(config: ExchangeConfig);
    private createExchange;
    fetchOHLCV(symbol: string, timeframe: string, limit?: number): Promise<ChartData[]>;
    getExchangeInfo(): Record<string, unknown>;
    isSymbolSupported(symbol: string): Promise<boolean>;
    getSupportedTimeframes(): string[];
}