import { TransactionRequest } from 'ethers';
import { CheckoutError, CheckoutErrorType } from '../errors';
import { WrappedBrowserProvider, SendTransactionResult } from '../types';
export declare function isPassportProvider(provider?: WrappedBrowserProvider | null): boolean;
/**
 * Checks conditions to operate a gas-free flow.
 *
 * TODO:
 * - Phase 1 (2024): Allow all passport wallets to be gas-free.
 * - Phase 2 & 3 (2025): Not all passport wallets will be gas-free.
 *   Therefore, the gas-free condition must be checked against the relayer's
 *   `im_getFeeOptions` endpoint, which should return zero for
 *   passport accounts with gas sponsorship enabled.
 *
 * Refer to the docs for more details:
 * https://docs.immutable.com/docs/zkevm/architecture/gas-sponsorship-for-gamers/
 */
export declare function isGasFree(provider?: WrappedBrowserProvider | null): boolean;
export declare const setTransactionGasLimits: (browserProvider: WrappedBrowserProvider, transaction: TransactionRequest) => Promise<TransactionRequest>;
export declare const handleProviderError: (err: any) => CheckoutError<CheckoutErrorType>;
export declare const sendTransaction: (browserProvider: WrappedBrowserProvider, transaction: TransactionRequest) => Promise<SendTransactionResult>;