/******************************************************************************
 *
 *  (C) 2022 AhnLab Blockchain Company, Inc. All rights reserved.
 *  Any part of this source code can not be copied with any method without
 *  prior written permission from the author or authorized person.
 *
 ******************************************************************************/
/// <reference types="node" />
import { EventEmitter } from 'events';
import { ProviderService } from '../provider';
export declare class NetworkService extends EventEmitter {
    private providerService;
    constructor(providerService: ProviderService);
    validateNetwork: (dto: {
        rpcUrl: string;
        existingRpcUrl?: string;
        chainId: number;
    }) => Promise<{
        success: boolean;
        errors?: any;
    }>;
    /**
     * Method to check if the block header contains fields that indicate EIP 1559
     * support (baseFeePerGas) AND update db accordingly.
     * @returns {Promise<boolean>} true if current network supports EIP 1559
     */
    setEIP1559Compatibility: (latestBlock: any) => boolean;
}