import { ICryptoWalletConnectionService } from "./ICryptoWalletConnectionService";
import { IEthereumProvider } from "./IEthereumProvider";
export declare class CryptoWalletConnectionService implements ICryptoWalletConnectionService {
    private ethereum;
    private readonly web3?;
    readonly hasEthereumProvider: boolean;
    readonly hasEventsSupport: boolean;
    readonly isMetamaskInstalled: boolean;
    readonly isSemiCompliantEthereumProviderInstalled: boolean;
    constructor(ethereum: IEthereumProvider);
    requestConnectionPermission(): Promise<boolean>;
    get didUserApproveDappInThePast(): boolean;
    getIsMainNetwork(): Promise<boolean>;
    readEthereumBalance(address: string): Promise<number>;
    readMainAddress(): Promise<string>;
    readCurrentBlockNumber(): Promise<number>;
    onMainAddressChange(onChange: (mainAddress: string) => void): () => void;
}