/// <reference types="node" />
/**
 * @module GXClientFactory
 */
import GXClient from './GXClient';
import { TransactionBuilder } from './TransactionBuilder';
declare const _default: {
    constructor(): never;
    /**
     * get GXClient instance
     * @param keyProvider {String} - private key
     * @param account {String} - '1.2.12'|'gxcaccount'
     * @param network {String} - entry point network address
     * @param signatureProvider {signatureProvider}
     * @returns {GXClient}
     */
    instance(opt: {
        keyProvider: string;
        account: string;
        network?: string;
        signatureProvider?: (transaction: TransactionBuilder, chain_id: string) => Promise<Buffer>;
        nonceProvider?: () => string;
    }): GXClient;
};
/**
 * A singleton factory for GXClient
 */
export default _default;
/**
 * This callback is displayed as a global member.
 * @callback signatureProvider
 * @param transaction {TransactionBuilder}
 * @param chain_id {String} - Chain Id
 */