import { ChainData } from 'src/types';
import { PriceProvider } from './types/IPriceProvider';
export declare class PriceService {
    private providers;
    constructor();
    private initailizeProviders;
    getPrices({ chainId, tokenAddresses, chainConfig, allowedSources, notAllowSources, }: {
        chainId: number;
        tokenAddresses: string[];
        chainConfig: ChainData | null;
        allowedSources?: PriceProvider[];
        notAllowSources?: PriceProvider[];
    }): Promise<Record<string, string | null>>;
    private getValidProviders;
    private updateTokensPrice;
}