import { Observable } from 'rxjs';
import { NativeEventEmitter } from 'react-native';
import { StripeTerminalConfig, DiscoveryMethod, Reader, ReaderSoftwareUpdate, ConnectionStatus, ReaderInputOptions, ReaderDisplayMessage, PaymentIntent } from './utils';
export declare class StripeTerminalSDK {
    private _fetchConnectionToken;
    private _onUnexpectedReaderDisconnect;
    static listener: NativeEventEmitter;
    isInitialized: boolean;
    private static isDiscovering;
    constructor(options: StripeTerminalConfig);
    private init;
    private _listenerToObservable;
    didStartInstallingUpdate(): Observable<ReaderSoftwareUpdate>;
    didReportAvailableUpdate(): Observable<ReaderSoftwareUpdate>;
    didReportReaderSoftwareUpdateProgress(): Observable<number>;
    didFinishInstallingUpdate(): Observable<{
        update?: ReaderSoftwareUpdate;
        error?: string;
    }>;
    didRequestReaderInput(): Observable<ReaderInputOptions>;
    didRequestReaderDisplayMessage(): Observable<ReaderDisplayMessage>;
    static createPaymentIntent(amount: number, currency: string): Promise<PaymentIntent>;
    static collectPaymentMethod(): Promise<PaymentIntent>;
    static create(options: StripeTerminalConfig): Promise<StripeTerminalSDK>;
    static isInitialized(): Promise<boolean>;
    static discoverReaders(discoveryMethod: DiscoveryMethod, simulated: boolean): Observable<Reader[]>;
    private static ensureInitialized;
    static cancelDiscoverReaders(): Promise<void>;
    static connectBluetoothReader(serialNumber: string, locationId: string): Promise<Reader>;
    static connectInternetReader(serialNumber: String, failIfInUse?: boolean): Promise<Reader>;
    static getConnectedReader(): Promise<Reader>;
    static disconnectReader(): Promise<void>;
    static connectionStatus(): Observable<ConnectionStatus>;
    static clearCachedCredentials(): Promise<void>;
    static cancelCollectPaymentMethod(): Promise<void>;
    static processPayment(): Promise<PaymentIntent>;
    static installAvailableUpdate(): Promise<void>;
    private static translateConnectionStatus;
}