export interface SSEParams {
    piId: string;
    piClientSecret: string;
    publishableKey: string;
    accountId: string;
    endpoint: string;
    paymentMethod: string;
    isAppInBackground: () => boolean;
    resolve: (value: any) => void;
    reject: (reason: any) => void;
    onAbort: () => void;
}
export declare const startPaymentSSEConnection: (params: SSEParams) => XMLHttpRequest;