From f61d58eccb8d865668a6a2c9223dfa673606bdd3 Mon Sep 17 00:00:00 2001
From: Jeff Senn <senn@maya.com>
Date: Fri, 10 Jan 2020 09:58:29 -0500
Subject: [PATCH] fix a bug where newDoc was mutated by validation functions
 resulting in replication failing

---
 packages/node_modules/pouchdb-validation/lib/index.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/node_modules/pouchdb-validation/lib/index.js b/packages/node_modules/pouchdb-validation/lib/index.js
index a9b0988c..33c7efd0 100644
--- a/packages/node_modules/pouchdb-validation/lib/index.js
+++ b/packages/node_modules/pouchdb-validation/lib/index.js
@@ -32,7 +32,9 @@ function oldDoc(db, id) {
 }
 
 function validate(validationFuncs, newDoc, oldDoc, options) {
-  newDoc._revisions = (oldDoc || {})._revisions;
+  if(!newDoc._revisions && oldDoc) {
+    newDoc = Object.assign({_revisions:oldDoc._revisions},newDoc);
+  }
 
   try {
     validationFuncs.forEach(function (validationFuncInfo) {