stop & defaultStop race stop (#4040)

* stop & defaultStop race stop

* fix tests

Author: mfazekas

__tests__/components/Camera.test.js

@@ -31,7 +31,7 @@ describe('Camera', () => {
   test('defaults are set', () => {
     const result = render(<Camera />);
     const { props } = result.queryByTestId('Camera');
-    expect(props.stop).toStrictEqual({});
+    expect(props.stop).toStrictEqual(null);
   });
   test('set location by center', () => {
     const result = render(

android/src/main/java/com/rnmapbox/rnmbx/components/camera/RNMBXCameraManager.kt

@@ -36,8 +36,8 @@ class RNMBXCameraManager(private val mContext: ReactApplicationContext, val view
     override fun setStop(camera: RNMBXCamera, map: Dynamic) {
         if (!map.isNull) {
             val mapValue = map.asMap()
-            if (mapValue == null) {
-                Logger.e("RNMBXCameraManager", "stop map is null")
+            if (mapValue == null || mapValue.keySetIterator().hasNextKey().not()) {
+                Logger.e("RNMBXCameraManager", "stop map is null or empty")
                 return
             }
             val stop = fromReadableMap(mContext, mapValue, null)

android/src/main/java/com/rnmapbox/rnmbx/utils/PropertyChanges.kt

@@ -2,7 +2,7 @@ package com.rnmapbox.rnmbx.utils
 
 /**
  * This mechanism allows to separate property updates from application of property updates. Usefull for delaying the propery updates
- * because the object is not yet created for example. Or to apply multiple propery changes at once.
+ * because the object is not yet created for example. Or to apply multiple property changes at once.
  *
  * @sample
  *

src/components/Camera.tsx

@@ -388,6 +388,17 @@ export const Camera = memo(
       }, [defaultSettings, buildNativeStop]);
 
       const nativeStop = useMemo(() => {
+        if (
+          centerCoordinate === undefined &&
+          bounds === undefined &&
+          heading === undefined &&
+          pitch === undefined &&
+          zoomLevel === undefined &&
+          padding === undefined
+        ) {
+          return null;
+        }
+
         return buildNativeStop({
           type: 'CameraStop',
           centerCoordinate,