feat: Concurrency control items cost compute.

server/src/interfaces/IItem.ts

@@ -0,0 +1,7 @@
+
+
+export interface IItem{
+  id: number,
+  name: string,
+  type: string,
+}

server/src/interfaces/InventoryCostMethod.ts

@@ -2,5 +2,5 @@
 
 interface IInventoryCostMethod {
   computeItemsCost(fromDate: Date): void,
-  initialize(): void,
+  storeInventoryLotsCost(transactions: any[]): void,
 }

server/src/interfaces/ItemEntry.ts

@@ -0,0 +1,14 @@
+
+
+export interface IItemEntry {
+  referenceType: string,
+  referenceId: number,
+
+  index: number,
+
+  itemId: number,
+  description: string,
+  discount: number,
+  quantity: number,
+  rate: number,
+}

server/src/interfaces/SaleInvoice.ts

@@ -0,0 +1,8 @@
+
+
+export interface ISaleInvoice {
+  id: number,
+  balance: number,
+  invoiceDate: Date,
+  entries: [],
+}

server/src/interfaces/index.ts

@@ -1,6 +1,8 @@
 import { IInventoryTransaction, IInventoryLotCost } from './InventoryTransaction';
 import { IBillPaymentEntry, IBillPayment } from './BillPayment';
 import { IInventoryCostMethod } from './IInventoryCostMethod';
+import { IItemEntry } from './ItemEntry';
+import { IItem } from './Item';
 
 export {
   IBillPaymentEntry,
@@ -8,4 +10,6 @@ export {
   IInventoryTransaction,
   IInventoryLotCost,
   IInventoryCostMethod,
+  IItemEntry
+  IItem,
 };