import { DashboardInvoice } from './dashboard-invoice.model';
import { DashboardInvoiceService } from './dashboard-invoice.service';
export declare class DashboardInvoiceResolver {
    private subscriptions;
    constructor(subscriptions: DashboardInvoiceService);
    expectedRevenue(start: Date, end: Date | null): Promise<DashboardInvoice[]>;
    revenue(start: Date, end: Date | null): Promise<DashboardInvoice[]>;
}