import { ObjectId } from "mongoose"; export interface IExternalInvoice { invoiceNumber:string; zone:string; employeeId:number; vehicleId:number; routeId?:number; departmentId:number; fuelTypeId:ObjectId; invoiceDate:Date; gallons:number; pricePerGallon:number; totalAmount?:number; createdBy:ObjectId; approvedBy?:ObjectId; comments?:string; status:string; }