fix(medusa): fields params usage in the storefront endpoints (#2980)

packages/medusa/src/utils/clean-response-data.ts

@@ -0,0 +1,21 @@
+import { pick } from "lodash"
+
+/**
+ * Filter response data to contain props specified in the fields array.
+ *
+ * @param data - record or an array of records in the response
+ * @param fields - record props allowed in the response
+ */
+function cleanResponseData<T>(data: T, fields: string[]) {
+  if (!fields.length) {
+    return data
+  }
+
+  if (Array.isArray(data)) {
+    return data.map((record) => pick(record, fields))
+  }
+
+  return pick(data, fields)
+}
+
+export { cleanResponseData }