import type { RelayEstimation } from '../../common/estimation.types';
import type { HubInfo } from '../../common/relayHub.types';
import type { EnvelopingTxRequest } from '../../common/relayTransaction.types';
import HttpWrapper from './HttpWrapper';
declare const PATHS: {
    readonly CHAIN_INFO: "/chain-info";
    readonly POST_RELAY_REQUEST: "/relay";
    readonly POST_ESTIMATE: "/estimate";
};
declare type RelayPath = (typeof PATHS)[keyof typeof PATHS];
declare type SignedTransactionDetails = {
    transactionHash: string;
    signedTx: string;
    error?: string;
    message?: string;
};
export declare function buildUrl(base: string, path: string, verifier?: string): string;
declare class HttpClient {
    private readonly _httpWrapper;
    constructor(httpWrapper?: HttpWrapper);
    get httpWrapper(): HttpWrapper;
    getChainInfo(relayUrl: string, verifier?: string): Promise<HubInfo>;
    private _stringifyEnvelopingTx;
    relayTransaction(relayUrl: string, envelopingTx: EnvelopingTxRequest): Promise<string>;
    estimateMaxPossibleGas(relayUrl: string, envelopingTx: EnvelopingTxRequest): Promise<RelayEstimation>;
}
export default HttpClient;
export { PATHS as RELAY_PATHS };
export type { RelayPath, SignedTransactionDetails };