export interface   order {
    itemName: string ;
    unitPrice: number ;
    units: number;
   unitTotalPrice: number;
  }
  
  export interface  InvoiceList {
   
       id: number;
       billFrom: string ;
       billFromEmail: string;
       billFromAddress: string;
       billFromPhone: number;
       billFromFax: number ;
       billTo: string;
       billToEmail: string;
       billToAddress: string;
       billToPhone: number ;
       billToFax: number;
       orders: order[] ;
       orderDate: Date ;
       totalCost: number;
       vat: number;
       grandTotal: number;
       status: string ;
       completed: boolean ;
       isSelected: boolean ;

  }