From e83436850276333f999fd1fe98f2ef905413389f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miroslav=20Bajto=C5=A1?= <mbajtoss@gmail.com>
Date: Fri, 7 Dec 2018 15:40:17 +0100
Subject: [PATCH] Upgrade bson to 4.x (latest)

---
 lib/utils.js | 8 +++++++-
 package.json | 2 +-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/utils.js b/lib/utils.js
index 3ddd0d37..3f218ea3 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -624,6 +624,12 @@ function createPromiseCallback() {
   return cb;
 }
 
+function isBsonType(value) {
+  // bson@1.x stores _bsontype on ObjectID instance, bson@4.x on prototype
+  return value.hasOwnProperty('_bsontype') ||
+    value.constructor.prototype.hasOwnProperty('_bsontype');
+}
+
 /**
  * Dedupe an array
  * @param {Array} an array
@@ -636,7 +642,7 @@ function uniq(a) {
   }
   assert(Array.isArray(a), 'array argument is required');
   var comparableA = a.map(
-    item => item.hasOwnProperty('_bsontype') ? item.toString() : item
+    item => isBsonType(item) ? item.toString() : item
   );
   for (var i = 0, n = comparableA.length; i < n; i++) {
     if (comparableA.indexOf(comparableA[i]) === i) {
diff --git a/package.json b/package.json
index e9e49265..c7811fc1 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
   "devDependencies": {
     "@types/node": "^10.0.8",
     "async-iterators": "^0.2.2",
-    "bson": "^1.0.4",
+    "bson": "^4.0.1",
     "coveralls": "^3.0.1",
     "eslint": "^5.1.0",
     "eslint-config-loopback": "^11.0.0",