Add optional discountAllocations field to pos bundle lineItemComponent

Author: daniszewskik

.changeset/bundle-component-discount-allocations.md

@@ -0,0 +1,5 @@
+---
+'@shopify/ui-extensions': minor
+---
+
+Added optional `discountAllocations` field to POS bundle `LineItemComponent` so extensions can access the discount amount allocated to each bundle component.

packages/ui-extensions/docs/surfaces/point-of-sale/generated/pos_ui_extensions/2026-07-rc/generated_docs_data_v2.json

@@ -440,6 +440,14 @@
       "description": "Represents a component of a [product bundle](/docs/apps/build/product-merchandising/bundles) line item. Bundle components contain the individual items that make up a bundle, each with their own pricing and tax information.",
       "isPublicDocs": true,
       "members": [
+        {
+          "filePath": "src/surfaces/point-of-sale/types/cart.ts",
+          "syntaxKind": "PropertySignature",
+          "name": "discountAllocations",
+          "value": "DiscountAllocation[]",
+          "description": "An array of discount allocations applied to this component, providing a detailed breakdown of how discounts are distributed across bundle components. Returns `undefined` if no allocations exist.",
+          "isOptional": true
+        },
         {
           "filePath": "src/surfaces/point-of-sale/types/cart.ts",
           "syntaxKind": "PropertySignature",
@@ -494,7 +502,7 @@
           "isOptional": true
         }
       ],
-      "value": "export interface LineItemComponent {\n  /**\n   * The display name for the custom sale item. Appears on receipts and in cart displays. Should be descriptive and customer-friendly.\n   */\n  title?: string;\n  /**\n   * The quantity of the custom sale item. Must be a positive integer. Use for quantity-based pricing and inventory management.\n   */\n  quantity: number;\n  /**\n   * The price for the custom sale item as currency string. Must be a valid positive amount. Use for non-catalog items and custom pricing.\n   */\n  price?: number;\n  /**\n   * Determines whether the custom sale item is taxable. Set to `true` to apply tax calculations, `false` to exempt from taxes.\n   */\n  taxable: boolean;\n  /**\n   * An array of tax lines applied to this component.\n   */\n  taxLines: TaxLine[];\n  /**\n   * The unique numeric identifier for the product variant this component represents, if applicable.\n   */\n  variantId?: number;\n  /**\n   * The unique numeric identifier for the product this component represents, if applicable.\n   */\n  productId?: number;\n}"
+      "value": "export interface LineItemComponent {\n  /**\n   * The display name for the custom sale item. Appears on receipts and in cart displays. Should be descriptive and customer-friendly.\n   */\n  title?: string;\n  /**\n   * The quantity of the custom sale item. Must be a positive integer. Use for quantity-based pricing and inventory management.\n   */\n  quantity: number;\n  /**\n   * The price for the custom sale item as currency string. Must be a valid positive amount. Use for non-catalog items and custom pricing.\n   */\n  price?: number;\n  /**\n   * Determines whether the custom sale item is taxable. Set to `true` to apply tax calculations, `false` to exempt from taxes.\n   */\n  taxable: boolean;\n  /**\n   * An array of tax lines applied to this component.\n   */\n  taxLines: TaxLine[];\n  /**\n   * An array of discount allocations applied to this component, providing a detailed breakdown of how discounts are distributed across bundle components. Returns `undefined` if no allocations exist.\n   */\n  discountAllocations?: DiscountAllocation[];\n  /**\n   * The unique numeric identifier for the product variant this component represents, if applicable.\n   */\n  variantId?: number;\n  /**\n   * The unique numeric identifier for the product this component represents, if applicable.\n   */\n  productId?: number;\n}"
     }
   },
   "SellingPlan": {

packages/ui-extensions/src/surfaces/point-of-sale/api.ts

@@ -118,6 +118,8 @@ export type {
 
 export type {TaxLine} from './types/tax-line';
 
+export type {DiscountAllocation} from './types/discount-allocation';
+
 export type {PaymentMethod, Payment} from './types/payment';
 
 export type {MultipleResourceResult} from './types/multiple-resource-result';

packages/ui-extensions/src/surfaces/point-of-sale/types/cart.ts

@@ -199,6 +199,10 @@ export interface LineItemComponent {
    * An array of tax lines applied to this component.
    */
   taxLines: TaxLine[];
+  /**
+   * An array of discount allocations applied to this component, providing a detailed breakdown of how discounts are distributed across bundle components. Returns `undefined` if no allocations exist.
+   */
+  discountAllocations?: DiscountAllocation[];
   /**
    * The unique numeric identifier for the product variant this component represents, if applicable.
    */