Make useObject compatible with undefined objects

COMPATIBILITY.md

@@ -23,9 +23,9 @@
 | 11.2.0              | >= 0.4.0          | >= 0.70.0          | 47       | ✅     | >= 7   | >= 13 (excluding 19) |
 | 11.1.0              | >= 0.4.0          | >= 0.70.0          | 47       | ✅     | >= 7   | >= 13  |
 | 11.0.0              | >= 0.4.0          | >= 0.70.0          | 47       | ✅     | >= 7   | >= 13  |
-| 11.0.0-rc.2         | >= 0.4.0          | >= 0.70.0          | N/A      | ✅     | >= 7   | >= 13  |
-| 11.0.0-rc.1         | >= 0.4.0          | >= 0.69.0 < 0.70.0 | 46       | ✅     | >= 7   | >= 13  |
-| 11.0.0-rc.0         | >= 0.4.0          | >= 0.66.0 < 0.69.0 | 45       | ✅     | >= 7   | >= 13  |
+| 11.0.0-rc.2         | >= 0.3.0          | >= 0.70.0          | N/A      | ✅     | >= 7   | >= 13  |
+| 11.0.0-rc.1         | >= 0.3.0          | >= 0.69.0 < 0.70.0 | 46       | ✅     | >= 7   | >= 13  |
+| 11.0.0-rc.0         | >= 0.3.0          | >= 0.66.0 < 0.69.0 | 45       | ✅     | >= 7   | >= 13  |
 | 10.24.0             | >= 0.3.0          | >= 0.64.0          | 44       | ❌     | >= 7   | >= 13  |
 | 10.23.0             | >= 0.3.0          | >= 0.64.0          | 44       | ❌     | >= 7   | >= 13  |
 | 10.22.0             | >= 0.3.0          | >= 0.64.0          | 44       | ❌     | >= 7   | >= 13  |

packages/realm-react/CHANGELOG.md

@@ -7,18 +7,14 @@
 * None
 
 ### Fixed
-* <How to hit and notice issue? what was the impact?> ([#????](https://github.com/realm/realm-js/issues/????), since v?.?.?)
-* None
+* `useObject` will now re-render if the result of `objectForPrimaryKey` is `null` or `undefined`. ([#6101](https://github.com/realm/realm-js/issues/6101))
 
 ### Compatibility
-* React Native >= v0.71.4
-* Realm Studio v14.0.0.
-* File format: generates Realms with format v23 (reads and upgrades file format v5 or later for non-synced Realm, upgrades file format v10 or later for synced Realms).
+* React Native >= v0.68.0
+* Realm >= 11.0.0
 
 ### Internal
-<!-- * Either mention core version or upgrade -->
-<!-- * Using Realm Core vX.Y.Z -->
-<!-- * Upgraded Realm Core from vX.Y.Z to vA.B.C -->
+* Removed `11.0.0-rc` from compatible versions.
 
 ## 0.6.0 (2023-08-23)
 

packages/realm-react/package.json

@@ -76,7 +76,7 @@
   },
   "peerDependencies": {
     "react": ">=17.0.2",
-    "realm": "^12.0.0-browser || ^12.0.0 || ^12.0.0-rc || ^11.0.0-rc || ^11.0.0"
+    "realm": "^12.0.0-browser || ^12.0.0 || ^12.0.0-rc || ^11.0.0"
   },
   "optionalDependencies": {
     "@babel/runtime": ">=7",

packages/realm-react/src/__tests__/useObjectRender.test.tsx

@@ -438,6 +438,23 @@
       fireEvent.press(rerenderButton);
       expect(objectChangeCounter).toHaveBeenCalledTimes(expectedCount);
     });
+    it("will rerender when the realm database is cleared", async () => {
+      await setupTest();
+
+      const initialCount = 2;
+
+      expect(objectChangeCounter).toHaveBeenCalledTimes(initialCount);
+
+      await act(async () => {
+        testRealm.write(() => {
+          testRealm.deleteAll();
+        });
+        forceSynchronousNotifications(testRealm);
+      });
+
+
+      expect(objectChangeCounter).toHaveBeenCalledTimes(initialCount + 1);
+    });
   });
 
   describe("rendering objects with a Realm.List property", () => {

packages/realm-react/src/__tests__/useQueryRender.test.tsx

@@ -443,4 +443,23 @@ describe.each`
     fireEvent.press(rerenderButton);
     expect(queryObjectChangeCounter).toHaveBeenCalledTimes(1);
   });
+
+  it("will rerender when the realm database is cleared", async () => {
+    await setupTest({ queryType });
+
+    const initialCount = 1;
+
+    expect(queryObjectChangeCounter).toHaveBeenCalledTimes(initialCount);
+
+    await act(async () => {
+      testRealm.write(() => {
+        testRealm.deleteAll();
+      });
+      forceSynchronousNotifications(testRealm);
+    });
+
+    await new Promise((resolve) => setTimeout(resolve, 1000));
+
+    expect(queryObjectChangeCounter).toHaveBeenCalledTimes(initialCount + 1);
+  });
 });

packages/realm-react/src/useObject.tsx

@@ -56,7 +56,7 @@ export function createUseObject(useRealm: () => Realm) {
     // Ref: https://github.com/facebook/react/issues/14490
     const cachedObjectRef = useRef<null | CachedObject>(null);
 
-    if (cachedObjectRef.current === null) {
+    if (!cachedObjectRef.current) {
       cachedObjectRef.current = createCachedObject({
         object: originalObject ?? null,
         realm,
@@ -81,7 +81,7 @@ export function createUseObject(useRealm: () => Realm) {
         // Re-instantiate the cachedObject if the primaryKey has changed or the originalObject has gone from null to not null
         if (
           !arePrimaryKeysIdentical(primaryKey, primaryKeyRef.current) ||
-          (originalObjectRef.current === null && originalObject !== null)
+          (!originalObjectRef.current && originalObject)
         ) {
           cachedObjectRef.current = createCachedObject({
             object: originalObject ?? null,
@@ -138,7 +138,7 @@ export function createUseObject(useRealm: () => Realm) {
     }, [realm, type, forceRerender]);
 
     // If the object has been deleted or doesn't exist for the given primary key, just return null
-    if (object === null || object?.isValid() === false) {
+    if (!object?.isValid()) {
       return null;
     }