import { JsonRpcProvider } from 'ethers';
import { BaseAPI } from './baseAPI';
/**
 * Represents a class for managing gas in transactions.
 *
 * @class GasAPI
 * @extends {BaseAPI}
 */
export declare class GasAPI extends BaseAPI {
    /**
     * Returns a promise containing the gas price.
     * @returns {Promise<bigint>} Promise containing the gas price.
     */
    getGasPrice(provider?: JsonRpcProvider): Promise<bigint>;
}