chore: add cart links to promotions/product (#7428)

packages/modules/link-modules/src/definitions/readonly/index.ts

@@ -3,6 +3,7 @@ export * from "./cart-product"
 export * from "./cart-region"
 export * from "./cart-sales-channel"
 export * from "./inventory-level-stock-location"
+export * from "./line-item-adjustment-promotion"
 export * from "./order-customer"
 export * from "./order-product"
 export * from "./order-sales-channel"

packages/modules/link-modules/src/definitions/readonly/line-item-adjustment-promotion.ts

@@ -0,0 +1,18 @@
+import { Modules } from "@medusajs/modules-sdk"
+import { ModuleJoinerConfig } from "@medusajs/types"
+
+export const LineItemAdjustmentPromotion: ModuleJoinerConfig = {
+  isLink: true,
+  isReadOnlyLink: true,
+  extends: [
+    {
+      serviceName: Modules.CART,
+      relationship: {
+        serviceName: Modules.PROMOTION,
+        primaryKey: "id",
+        foreignKey: "promotion_id",
+        alias: "promotion",
+      },
+    },
+  ],
+}