add is object chec

Author: hannojg

packages/react-native-renderer/src/ReactNativeAttributePayloadFabric.js

@@ -14,9 +14,9 @@ import {
 } from 'react-native/Libraries/ReactPrivate/ReactNativePrivateInterface';
 import isArray from 'shared/isArray';
 
-import {enableShallowPropDiffing} from 'shared/ReactFeatureFlags';
+import { enableShallowPropDiffing } from 'shared/ReactFeatureFlags';
 
-import type {AttributeConfiguration} from './ReactNativeTypes';
+import type { AttributeConfiguration } from './ReactNativeTypes';
 
 const emptyObject = {};
 
@@ -32,7 +32,7 @@ const emptyObject = {};
 type NestedNode = Array<NestedNode> | Object;
 
 // Tracks removed keys
-let removedKeys: {[string]: boolean} | null = null;
+let removedKeys: { [string]: boolean } | null = null;
 let removedKeyCount = 0;
 
 const deepDifferOptions = {
@@ -344,7 +344,7 @@ function diffProperties(
       // case: !Object is the default case
       if (enableShallowPropDiffing || defaultDiffer(prevProp, nextProp)) {
         // a normal leaf has changed
-        (updatePayload || (updatePayload = ({}: {[string]: $FlowFixMe})))[
+        (updatePayload || (updatePayload = ({}: { [string]: $FlowFixMe })))[
           propKey
         ] = nextProp;
       }
@@ -363,9 +363,9 @@ function diffProperties(
         const nextValue =
           typeof attributeConfig.process === 'function'
             ? // $FlowFixMe[incompatible-use] found when upgrading Flow
-              attributeConfig.process(nextProp)
+            attributeConfig.process(nextProp)
             : nextProp;
-        (updatePayload || (updatePayload = ({}: {[string]: $FlowFixMe})))[
+        (updatePayload || (updatePayload = ({}: { [string]: $FlowFixMe })))[
           propKey
         ] = nextValue;
       }
@@ -421,11 +421,11 @@ function diffProperties(
     ) {
       // case: CustomAttributeConfiguration | !Object
       // Flag the leaf property for removal by sending a sentinel.
-      (updatePayload || (updatePayload = ({}: {[string]: $FlowFixMe})))[
+      (updatePayload || (updatePayload = ({}: { [string]: $FlowFixMe })))[
         propKey
       ] = null;
       if (!removedKeys) {
-        removedKeys = ({}: {[string]: boolean});
+        removedKeys = ({}: { [string]: boolean });
       }
       if (!removedKeys[propKey]) {
         removedKeys[propKey] = true;
@@ -478,7 +478,7 @@ function fastAddProperties(
       } else {
         continue;
       }
-    } else if (typeof attributeConfig.process === 'function') {
+    } else if (typeof attributeConfig === 'object' && typeof attributeConfig.process === 'function') {
       // An atomic prop with custom processing.
       newValue = attributeConfig.process(prop);
     } else if (typeof prop === 'function') {
@@ -494,7 +494,7 @@ function fastAddProperties(
 
     if (newValue !== undefined) {
       if (!payload) {
-        payload = ({}: {[string]: $FlowFixMe});
+        payload = ({}: { [string]: $FlowFixMe });
       }
       payload[propKey] = newValue;
       continue;