Chore(medusa,utils,types,inventory,stock-location): remove core dependency modules (#3531)

packages/utils/src/common/is-email.ts

@@ -0,0 +1,20 @@
+import { isEmail } from "class-validator"
+import { MedusaError } from "./errors"
+
+/**
+ * Used to validate user email.
+ * @param {string} email - email to validate
+ * @return {string} the validated email
+ */
+export function validateEmail(email: string): string {
+  const validatedEmail = isEmail(email)
+
+  if (!validatedEmail) {
+    throw new MedusaError(
+      MedusaError.Types.INVALID_DATA,
+      "The email is not valid"
+    )
+  }
+
+  return email.toLowerCase()
+}