export interface Transport { Name: string VehicleNum: string Method: string GSTIN: string Builty: string } export interface Item { Model: string Description: string Quantity: number UnitPrice: number // price without tax/discount TotalValue: number // UnitPrice * Quantity Discount: number // percentage of discount DiscountValue: number HSN: string TotalGST: number // gst percentage SGST: number | boolean CGST: number | boolean IGST: number | boolean TotalGSTValue: number // total tax // category and brand } // for registering new item to DB export interface NewItem { Model: string Description: string UnitPrice: number // price without tax/discount HSN: string TotalGST: number // gst percentage // category and brand } export interface Address { AddressLine: string City: string State: string PINCode: string Country: string } export interface Person { ID?: number Name: string Phone?: string Email?: string BillAddress: Address ShipAddress?: Address Address?: string // to be removed } export interface Invoice { //Client: Person Items: Item[] Transport: Transport }