/// <reference types="node" />
import { EventEmitter } from 'events';
import { ConnectType, Connection, ConnectionState, UriHandler, AddTokenOptions } from './types';
export * from './types';
export * from './connections';
export * from './helper';
export default class Connector extends EventEmitter {
    private static _instance;
    static getInstance(): Connector;
    private _type;
    private readonly LAST_CONNECT_CACHE_KEY;
    private cache;
    private connections;
    get type(): ConnectType;
    get state(): ConnectionState;
    protected constructor();
    connect(type: ConnectType): Promise<any>;
    switchChain(chainId: number): Promise<void>;
    addToken(options: AddTokenOptions): Promise<void>;
    disconnect(): Promise<void>;
    private eventThrough;
    registConnection(type: ConnectType, handler: Connection): void;
    private registLastConnectCache;
    setCache(cache: Storage): void;
    tryLastConnect(): Promise<boolean>;
    registUriHandler(handler: UriHandler): void;
}