import { CHAIN_ID } from '../constant';
import { ethers } from 'ethers';
export declare function getProvider(network: CHAIN_ID, timeout?: number): ethers.providers.JsonRpcProvider | undefined;
export declare function getWssProvider(network: CHAIN_ID): ethers.providers.WebSocketProvider | undefined;
export declare function getProviderHeaders(network: CHAIN_ID, type: 'RPC' | 'WSS'): Record<string, string>;
export declare function isSameAddress(addr1: string, addr2: string): boolean;
export declare function isZeroAddress(addr: string): boolean;
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