fix: Local datastore throws error when Parse.Query.notEqualTo is set to null (#2102)

Author: dplewis

integration/test/ParseLocalDatastoreTest.js

@@ -1376,6 +1376,16 @@ function runTest(controller) {
       assert.equal(results.length, 9);
     });
 
+    it(`${controller.name} can perform notEqualTo null queries`, async () => {
+      const nullObject = new Parse.Object({ className: 'BoxedNumber', number: null });
+      await nullObject.save();
+      const query = new Parse.Query('BoxedNumber');
+      query.notEqualTo('number', null);
+      query.fromLocalDatastore();
+      const results = await query.find();
+      assert.equal(results.length, 10);
+    });
+
     it(`${controller.name} can perform containedIn queries`, async () => {
       const query = new Parse.Query('BoxedNumber');
       query.containedIn('number', [3, 5, 7, 9, 11]);

src/OfflineQuery.js

@@ -315,11 +315,11 @@ function matchesKeyConstraints(className, object, objects, key, constraints) {
   for (const condition in constraints) {
     compareTo = constraints[condition];
 
-    if (compareTo.__type) {
+    if (compareTo?.__type) {
       compareTo = decode(compareTo);
     }
     // is it a $relativeTime? convert to date
-    if (compareTo['$relativeTime']) {
+    if (compareTo?.['$relativeTime']) {
       const parserResult = relativeTimeToDate(compareTo['$relativeTime']);
       if (parserResult.status !== 'success') {
         throw new ParseError(