import Transport from '@ledgerhq/hw-transport';
import LedgerEth from '@ledgerhq/hw-app-eth';
export declare class ChromeLedgerBridge {
    transport: Transport;
    app: LedgerEth;
    constructor();
    makeApp(): Promise<void>;
    cleanUp(): Promise<void>;
    unlock(hdPath: string): Promise<{
        publicKey: string;
        address: string;
        chainCode?: string | undefined;
    }>;
    signTransaction(hdPath: string, tx: string): Promise<{
        s: string;
        v: string;
        r: string;
    }>;
    signPersonalMessage(hdPath: string, message: string): Promise<{
        v: number;
        s: string;
        r: string;
    }>;
    ledgerErrToMessage(err: any): any;
}