From b8565ec486b3a522222f6915e639aaafb79bcf50 Mon Sep 17 00:00:00 2001
From: Michael Yartsev <anijap@gmail.com>
Date: Sun, 24 Sep 2017 19:27:09 +0900
Subject: [PATCH] Serialize the id if its an ObjectID, fixes #5

---
 lib/helpers.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/helpers.js b/lib/helpers.js
index aaeac1b..111edf9 100644
--- a/lib/helpers.js
+++ b/lib/helpers.js
@@ -1,6 +1,7 @@
 'use strict'
 
 const crypto = require('crypto')
+const ObjectID = require('mongodb').ObjectID
 
 const idKey = '_id'
 
@@ -45,6 +46,9 @@ function outputRecord (type, record) {
 
   // ID business.
   clone[primaryKey] = record[idKey]
+  if(ObjectID.isValid(clone[primaryKey])) {
+    clone[primaryKey] = clone[primaryKey].toHexString()
+  }
 
   // Non-native types.
   for (const field of Object.getOwnPropertyNames(fields)) {