export declare class Coingecko {
    /**
     * @inheritdoc {@link PremiaConfig.coingeckoProApiKey}
     */
    uri: string;
    apiKey?: string;
    constructor(baseUri: string, apiKey?: string);
    createUrl(path: string): string;
    getPrice(coinName: string, currency?: string): Promise<string | null>;
    getPriceByAddress(tokenAddress: string, chainId: number, currency?: string): Promise<string | null>;
    getPricesByAddress(tokenAddresses: string[], chainId: number, currency?: string): Promise<(string | null)[] | null>;
    get24HourPriceChange(coinName: string, currency?: string): Promise<string | null>;
}