import type Web3 from "web3";
import type { TransactionConfig } from "web3-core";
/**
 * Estimate the amount of gas that will be needed to submit a transaction (tx)
 *
 * The underlying RPC `eth_estimateGas` will check the balance of the sender,
 * this means that even though the call doesn't consume any gas,
 * the `from` address must have enough gas to execute the tx
 *
 * @async
 * @function estimateGas
 * @param {TransactionConfig} tx A tx object
 * @param {Web3} web3
 * @throws {NightfallSdkError} Web3 errors
 * @returns {Promise<number>}
 */
export declare function estimateGas(tx: TransactionConfig, web3: Web3): Promise<number>;
/**
 * Estimate gas price
 *
 * @async
 * @function estimateGasPrice
 * @param {Web3} web3
 * @throws {NightfallSdkError} Web3 errors
 * @returns {Promise<number>}
 */
export declare function estimateGasPrice(web3: Web3): Promise<number>;