import LedgerApp from '@binance-chain/javascript-sdk/lib/ledger/ledger-app';
export declare class ChromeLedgerBridge {
    private app;
    private transport;
    constructor();
    makeApp(): Promise<void>;
    cleanUp(): Promise<void>;
    unlock(hdPath: number[], hrp: string): Promise<{
        address: string;
        publicKey: string;
    }>;
    signTransaction(hdPath: number[], tx: any, hrp?: string): Promise<{
        signature: string | undefined;
        pubKey: string;
    }>;
    mustHaveApp(): LedgerApp;
    getPublicKey(hdPath: number[]): Promise<string>;
    getAddressByHdPath(hdPath: number[], hrp: string): Promise<string>;
    ledgerErrToMessage(err: any): any;
}