refactor: mongo deprecation warnings on database connect and returnOriginal

Author: Moumouls

.prettierignore

@@ -0,0 +1 @@
+*.md

CHANGELOG.md

@@ -174,6 +174,7 @@ ___
 - refactor: deprecate `Parse.Cloud.httpRequest`; it is recommended to use a HTTP library instead. (Daniel Blyth) [#7595](https://github.com/parse-community/parse-server/pull/7595)
 - refactor: Modernize HTTPRequest tests (brandongregoryscott) [#7604](https://github.com/parse-community/parse-server/pull/7604)
 - Allow liveQuery on Session class (Daniel Blyth) [#7554](https://github.com/parse-community/parse-server/pull/7554)
+- Fix Mongo deprecation warnings on database connect and returnOriginal (Moumouls) [#7626](https://github.com/parse-community/parse-server/pull/7626)
 
 # 4.10.4
 [Full Changelog](https://github.com/parse-community/parse-server/compare/4.10.3...4.10.4)

src/Adapters/Storage/Mongo/MongoStorageAdapter.js

@@ -180,10 +180,10 @@ export class MongoStorageAdapter implements StorageAdapter {
           delete this.connectionPromise;
           return;
         }
-        database.on('error', () => {
+        client.on('error', () => {
           delete this.connectionPromise;
         });
-        database.on('close', () => {
+        client.on('close', () => {
           delete this.connectionPromise;
         });
         this.client = client;
@@ -555,7 +555,7 @@ export class MongoStorageAdapter implements StorageAdapter {
     return this._adaptiveCollection(className)
       .then(collection =>
         collection._mongoCollection.findOneAndUpdate(mongoWhere, mongoUpdate, {
-          returnOriginal: false,
+          returnDocument: 'after',
           session: transactionalSession || undefined,
         })
       )