fix(customer): Unique constraint on customer email (#7439)

**What**
Prevent creating multiple customers with the same email

packages/core/utils/src/dal/mikro-orm/db-error-mapper.ts

@@ -7,6 +7,17 @@ import {
 } from "@mikro-orm/core"
 import { MedusaError, upperCaseFirst } from "../../common"
 
+function parseValue(value: string) {
+  switch (value) {
+    case "t":
+      return "true"
+    case "f":
+      return "false"
+    default:
+      return value
+  }
+}
+
 export const dbErrorMapper = (err: Error) => {
   if (err instanceof NotFoundError) {
     throw new MedusaError(MedusaError.Types.NOT_FOUND, err.message)
@@ -24,8 +35,8 @@ export const dbErrorMapper = (err: Error) => {
     throw new MedusaError(
       MedusaError.Types.INVALID_DATA,
       `${upperCaseFirst(info.table.split("_").join(" "))} with ${info.keys
-        .map((key, i) => `${key}: ${info.values[i]}`)
-        .join(", ")} already exists.`
+        .map((key, i) => `${key}: ${parseValue(info.values[i])}`)
+        .join(", ")}, already exists.`
     )
   }
 

packages/core/utils/src/dal/mikro-orm/integration-tests/__tests__/mikro-orm-repository.spec.ts

@@ -864,7 +864,7 @@ describe("mikroOrmRepository", () => {
         .upsertWithReplace([entity3])
         .catch((e) => e.message)
 
-      expect(err).toEqual("Entity3 with title: en3 already exists.")
+      expect(err).toEqual("Entity3 with title: en3, already exists.")
     })
 
     it("should map NotNullConstraintViolationException MedusaError on upsertWithReplace", async () => {