.

modules/customer-invoices/src/api/domain/proformas/aggregates/proforma.aggregate.ts

@@ -21,7 +21,7 @@ import {
   type ItemAmount,
 } from "../../common/value-objects";
 import { ProformaItems } from "../entities/proforma-items";
-import { type IProformaTaxTotals, ProformaTaxCalculator } from "../services";
+import { type IProformaTaxTotals, ProformaTaxesCalculator } from "../services";
 
 export type ProformaProps = {
   companyId: UniqueID;
@@ -255,7 +255,7 @@ export class Proforma extends AggregateRoot<ProformaProps> implements IProforma
   }
 
   public taxes(): Collection<IProformaTaxTotals> {
-    return new ProformaTaxCalculator(this.items).calculate();
+    return new ProformaTaxesCalculator(this.items).calculate();
   }
 
   public getProps(): ProformaProps {

modules/customer-invoices/src/api/domain/proformas/entities/proforma-items/proforma-items.collection.ts

@@ -2,7 +2,7 @@ import type { DiscountPercentage } from "@erp/core/api";
 import type { CurrencyCode, LanguageCode } from "@repo/rdx-ddd";
 import { Collection } from "@repo/rdx-utils";
 
-import { ItemAmount } from "../../../common";
+import { ProformaItemsTotalsCalculator } from "../../services/proforma-items-totals-calculator";
 
 import type { IProformaItem, IProformaItemTotals, ProformaItem } from "./proforma-item.entity";
 
@@ -77,63 +77,7 @@ export class ProformaItems extends Collection<ProformaItem> implements IProforma
    * Delega en los ítems individuales (DDD correcto) pero evita múltiples recorridos.
    */
   public totals(): IProformaItemTotals {
-    let subtotalAmount = ItemAmount.zero(this.currencyCode.code);
+    return new ProformaItemsTotalsCalculator(this).calculate();
-
-    let itemDiscountAmount = ItemAmount.zero(this.currencyCode.code);
-    let globalDiscountAmount = ItemAmount.zero(this.currencyCode.code);
-    let totalDiscountAmount = ItemAmount.zero(this.currencyCode.code);
-
-    let taxableAmount = ItemAmount.zero(this.currencyCode.code);
-
-    let ivaAmount = ItemAmount.zero(this.currencyCode.code);
-    let recAmount = ItemAmount.zero(this.currencyCode.code);
-    let retentionAmount = ItemAmount.zero(this.currencyCode.code);
-
-    let taxesAmount = ItemAmount.zero(this.currencyCode.code);
-    let totalAmount = ItemAmount.zero(this.currencyCode.code);
-
-    for (const item of this.getAll()) {
-      const amounts = item.totals();
-
-      // Subtotales
-      subtotalAmount = subtotalAmount.add(amounts.subtotalAmount);
-
-      // Descuentos
-      itemDiscountAmount = itemDiscountAmount.add(amounts.itemDiscountAmount);
-      globalDiscountAmount = globalDiscountAmount.add(amounts.globalDiscountAmount);
-      totalDiscountAmount = totalDiscountAmount.add(amounts.totalDiscountAmount);
-
-      // Base imponible
-      taxableAmount = taxableAmount.add(amounts.taxableAmount);
-
-      // Impuestos individuales
-      ivaAmount = ivaAmount.add(amounts.ivaAmount);
-      recAmount = recAmount.add(amounts.recAmount);
-      retentionAmount = retentionAmount.add(amounts.retentionAmount);
-
-      // Total impuestos del ítem
-      taxesAmount = taxesAmount.add(amounts.taxesAmount);
-
-      // Total final del ítem
-      totalAmount = totalAmount.add(amounts.totalAmount);
-    }
-
-    return {
-      subtotalAmount,
-
-      itemDiscountAmount,
-      globalDiscountAmount,
-      totalDiscountAmount,
-
-      taxableAmount,
-
-      ivaAmount,
-      recAmount,
-      retentionAmount,
-
-      taxesAmount,
-      totalAmount,
-    } as const;
   }
 
   private ensureSameCurrencyAndLanguage(items: IProformaItem[]): void {

modules/customer-invoices/src/api/domain/proformas/services/index.ts

@@ -1 +1 @@
-export * from "./proforma-tax-calculator";
+export * from "./proforma-taxes-calculator";

modules/customer-invoices/src/api/domain/proformas/services/proforma-compare-tax-totals.ts

@@ -1,7 +1,7 @@
 import type { TaxPercentage } from "@erp/core/api";
 import type { Maybe } from "@repo/rdx-utils";
 
-import type { IProformaTaxTotals } from "./proforma-tax-calculator";
+import type { IProformaTaxTotals } from "./proforma-taxes-calculator";
 
 /**
  * Orden determinista:

modules/customer-invoices/src/api/domain/proformas/services/proforma-items-totals-calculator.ts

@@ -0,0 +1,89 @@
+import { ItemAmount } from "../../common";
+import type { IProformaItems } from "../entities";
+
+export interface IProformaItemsTotals {
+  subtotalAmount: ItemAmount;
+
+  itemDiscountAmount: ItemAmount;
+  globalDiscountAmount: ItemAmount;
+  totalDiscountAmount: ItemAmount;
+
+  taxableAmount: ItemAmount;
+
+  ivaAmount: ItemAmount;
+  recAmount: ItemAmount;
+  retentionAmount: ItemAmount;
+
+  taxesAmount: ItemAmount;
+  totalAmount: ItemAmount;
+}
+
+/**
+ * Calcula los totales (scale 4) a partir de las líneas valoradas.
+ * La lógica fiscal está en ProformaItem; aquí solo se agregan resultados.
+ */
+export class ProformaItemsTotalsCalculator {
+  constructor(private readonly items: IProformaItems) {}
+
+  public calculate(): IProformaItemsTotals {
+    const zero = ItemAmount.zero(this.items.currencyCode.code);
+
+    let subtotalAmount = zero;
+
+    let itemDiscountAmount = zero;
+    let globalDiscountAmount = zero;
+    let totalDiscountAmount = zero;
+
+    let taxableAmount = zero;
+
+    let ivaAmount = zero;
+    let recAmount = zero;
+    let retentionAmount = zero;
+
+    let taxesAmount = zero;
+    let totalAmount = zero;
+
+    for (const item of this.items.getAll()) {
+      const amounts = item.totals();
+
+      // Subtotales
+      subtotalAmount = subtotalAmount.add(amounts.subtotalAmount);
+
+      // Descuentos
+      itemDiscountAmount = itemDiscountAmount.add(amounts.itemDiscountAmount);
+      globalDiscountAmount = globalDiscountAmount.add(amounts.globalDiscountAmount);
+      totalDiscountAmount = totalDiscountAmount.add(amounts.totalDiscountAmount);
+
+      // Base imponible
+      taxableAmount = taxableAmount.add(amounts.taxableAmount);
+
+      // Impuestos individuales
+      ivaAmount = ivaAmount.add(amounts.ivaAmount);
+      recAmount = recAmount.add(amounts.recAmount);
+      retentionAmount = retentionAmount.add(amounts.retentionAmount);
+
+      // Total impuestos del ítem
+      taxesAmount = taxesAmount.add(amounts.taxesAmount);
+
+      // Total final del ítem
+      totalAmount = totalAmount.add(amounts.totalAmount);
+    }
+
+    return {
+      subtotalAmount,
+
+      itemDiscountAmount,
+      globalDiscountAmount,
+      totalDiscountAmount,
+
+      taxableAmount,
+
+      ivaAmount,
+      recAmount,
+      retentionAmount,
+
+      taxesAmount,
+      totalAmount,
+    } as const;
+  }
+}

modules/customer-invoices/src/api/domain/proformas/services/proforma-taxes-calculator.ts

@@ -25,7 +25,7 @@ export interface IProformaTaxTotals {
   taxesAmount: InvoiceAmount;
 }
 
-export class ProformaTaxCalculator {
+export class ProformaTaxesCalculator {
   constructor(private readonly items: IProformaItems) {}
 
   public calculate(): Collection<IProformaTaxTotals> {

packages/rdx-ddd/src/value-objects/money-value.ts

@@ -8,8 +8,6 @@ import { ValueObject } from "./value-object";
 const DEFAULT_SCALE = 2;
 const DEFAULT_CURRENCY_CODE = "EUR";
 
-type CurrencyData = Currency;
-
 export type RoundingMode =
   | "HALF_ODD"
   | "HALF_EVEN"