/// <reference types="node" />
import '@polkadot/types-augment';
import { _ApiOptions } from '@soul-wallet/extension-base/services/chain-service/handler/types';
import { _ChainConnectionStatus, _EvmApi } from '@soul-wallet/extension-base/services/chain-service/types';
import { PromiseHandler } from '@soul-wallet/extension-base/utils/promise';
import { BehaviorSubject } from 'rxjs';
import Web3 from 'web3';
import { HttpProvider, WebsocketProvider } from 'web3-core';
export declare class EvmApi implements _EvmApi {
    chainSlug: string;
    api: Web3;
    apiUrl: string;
    provider: HttpProvider | WebsocketProvider;
    apiError?: string;
    apiRetry: number;
    readonly isApiConnectedSubject: BehaviorSubject<boolean>;
    readonly connectionStatusSubject: BehaviorSubject<_ChainConnectionStatus>;
    isApiReady: boolean;
    isApiReadyOnce: boolean;
    isReadyHandler: PromiseHandler<_EvmApi>;
    intervalCheckApi: NodeJS.Timer;
    providerName: string;
    get isApiConnected(): boolean;
    get connectionStatus(): _ChainConnectionStatus;
    private updateConnectionStatus;
    get isReady(): Promise<_EvmApi>;
    updateApiUrl(apiUrl: string): Promise<void>;
    recoverConnect(): Promise<void>;
    private createProvider;
    constructor(chainSlug: string, apiUrl: string, { providerName }?: _ApiOptions);
    createIntervalCheckApi(): NodeJS.Timer;
    clearIntervalCheckApi(): void;
    connect(): void;
    disconnect(): Promise<void>;
    destroy(): Promise<void>;
    onConnect(): void;
    onDisconnect(): void;
}