import { JsonRpcProvider, Wallet, ethers } from 'ethers';
type RpcSource = JsonRpcProvider | Wallet | string;
export declare class OnchainHelpers {
    private provider;
    constructor(rpcSource: RpcSource);
    private generateProvider;
    getFinalizedBlockHeight(): Promise<number>;
    getCrossDomainMessageFromTx(tx: string, l1MessageQueueProxyAddress: string): Promise<{
        queueIndex: number;
        l2TxHash: string;
    }>;
    getPendingQueueIndex(l1MessageQueueProxyAddress: string): Promise<number>;
    getGasOracleL2BaseFee(l1MessageQueueProxyAddress: string): Promise<bigint>;
    awaitTx(txHash: string, timeout?: number): Promise<ethers.TransactionReceipt | null>;
    constructBlockExplorerUrl(value: string, type: LookupType, params?: BlockExplorerParams): Promise<string>;
    txLink(txHash: string, params?: BlockExplorerParams): Promise<string>;
    addressLink(address: string, params?: BlockExplorerParams): Promise<string>;
}
export declare enum LookupType {
    TX = "tx",
    ADDRESS = "address"
}
export interface BlockExplorerParams {
    chainId?: number;
    blockExplorerURI?: string;
}
export declare const l1ETHGatewayABI: {
    inputs: {
        internalType: string;
        name: string;
        type: string;
    }[];
    name: string;
    outputs: never[];
    stateMutability: string;
    type: string;
}[];
export {};