import '@polkadot/types-augment';
import { MetadataItem } from '../../../background/KoniTypes';
import { _ApiOptions } from '@soul-wallet/extension-base/services/chain-service/handler/types';
import { _ChainConnectionStatus, _SubstrateApi, _SubstrateDefaultFormatBalance } from '@soul-wallet/extension-base/services/chain-service/types';
import { BehaviorSubject } from 'rxjs';
import { ApiPromise } from '@polkadot/api';
import { SubmittableExtrinsicFunction } from '@polkadot/api/promise/types';
import { ProviderInterface } from '@polkadot/rpc-provider/types';
import { Registry } from '@polkadot/types/types';
export declare class SubstrateApi implements _SubstrateApi {
    chainSlug: string;
    api: ApiPromise;
    providerName?: string;
    provider: ProviderInterface;
    apiUrl: string;
    metadata?: MetadataItem;
    useLightClient: boolean;
    isApiReady: boolean;
    isApiReadyOnce: boolean;
    apiError?: string;
    private handleApiReady;
    readonly isApiConnectedSubject: BehaviorSubject<boolean>;
    readonly connectionStatusSubject: BehaviorSubject<_ChainConnectionStatus>;
    get isApiConnected(): boolean;
    substrateRetry: number;
    get connectionStatus(): _ChainConnectionStatus;
    private updateConnectionStatus;
    apiDefaultTx?: SubmittableExtrinsicFunction;
    apiDefaultTxSudo?: SubmittableExtrinsicFunction;
    defaultFormatBalance?: _SubstrateDefaultFormatBalance;
    registry: Registry;
    specName: string;
    specVersion: string;
    systemChain: string;
    systemName: string;
    systemVersion: string;
    private createProvider;
    private createApi;
    constructor(chainSlug: string, apiUrl: string, { externalApiPromise, metadata, providerName }?: _ApiOptions);
    get isReady(): Promise<_SubstrateApi>;
    updateApiUrl(apiUrl: string): Promise<void>;
    connect(): void;
    disconnect(): Promise<void>;
    recoverConnect(): Promise<void>;
    destroy(): Promise<void>;
    onReady(): void;
    onConnect(): void;
    onDisconnect(): void;
    onError(e: Error): void;
    fillApiInfo(): Promise<void>;
}