RN: Fix registerGeneratedViewConfig Types

Summary:
Fixes types in `registerGeneratedViewConfig` and also removes some unnecessary hacks for the `ReactNativeViewViewConfig` type.

Changelog:
[Internal]

Reviewed By: JoshuaGross

Differential Revision: D25076608

fbshipit-source-id: 5cb2060e11db598b42fbb7f2f8aecfd7f4b262ef

Libraries/Components/View/ReactNativeViewViewConfig.js

@@ -9,15 +9,17 @@
  */
 
 'use strict';
+
+import {type ViewConfig} from '../../Renderer/shims/ReactNativeTypes';
 import ReactNativeViewViewConfigAndroid from './ReactNativeViewViewConfigAndroid';
 import {Platform} from 'react-native';
 
-const ReactNativeViewConfig = {
+const ReactNativeViewConfig: ViewConfig = {
   uiViewClassName: 'RCTView',
   baseModuleName: null,
   Manager: 'ViewManager',
-  Commands: ({}: {...}),
-  Constants: ({}: {...}),
+  Commands: {},
+  Constants: {},
   bubblingEventTypes: {
     ...ReactNativeViewViewConfigAndroid.bubblingEventTypes,
     topBlur: {
@@ -171,7 +173,7 @@ const ReactNativeViewConfig = {
     flexShrink: true,
     flexWrap: true,
     height: true,
-    hitSlop: {diff: (require('../../Utilities/differ/insetsDiffer'): any)},
+    hitSlop: {diff: require('../../Utilities/differ/insetsDiffer')},
     importantForAccessibility: true,
     justifyContent: true,
     left: true,
@@ -322,9 +324,10 @@ const ReactNativeViewConfig = {
       textTransform: true,
       tintColor: {process: require('../../StyleSheet/processColor')},
       top: true,
-      transform: ((Platform.OS === 'ios'
-        ? {diff: require('../../Utilities/differ/matricesDiffer')}
-        : {process: require('../../StyleSheet/processTransform')}): any),
+      transform:
+        Platform.OS === 'ios'
+          ? {diff: require('../../Utilities/differ/matricesDiffer')}
+          : {process: require('../../StyleSheet/processTransform')},
       transformMatrix: true,
       translateX: true,
       translateY: true,
@@ -334,9 +337,10 @@ const ReactNativeViewConfig = {
     },
     testID: true,
     top: true,
-    transform: ((Platform.OS === 'ios'
-      ? {diff: require('../../Utilities/differ/matricesDiffer')}
-      : {process: require('../../StyleSheet/processTransform')}): any),
+    transform:
+      Platform.OS === 'ios'
+        ? {diff: require('../../Utilities/differ/matricesDiffer')}
+        : {process: require('../../StyleSheet/processTransform')},
     translateX: true,
     translateY: true,
     width: true,

Libraries/Renderer/shims/ReactNativeTypes.js

@@ -51,8 +51,10 @@ export type AttributeConfiguration<
 
 export type ViewConfig = $ReadOnly<{
   Commands?: $ReadOnly<{[commandName: string]: number, ...}>,
+  Constants?: $ReadOnly<{[name: string]: mixed, ...}>,
+  Manager?: string,
   NativeProps?: $ReadOnly<{[propName: string]: string, ...}>,
-  baseModuleName?: string,
+  baseModuleName?: ?string,
   bubblingEventTypes?: $ReadOnly<{
     [eventName: string]: $ReadOnly<{
       phasedRegistrationNames: $ReadOnly<{

Libraries/Utilities/registerGeneratedViewConfig.js

@@ -23,26 +23,26 @@ function registerGeneratedViewConfig(
   const staticViewConfig = {
     uiViewClassName: componentName,
     Commands: {},
-    /* $FlowFixMe(>=0.122.0 site=react_native_fb) This comment suppresses an
-     * error found when Flow v0.122.0 was deployed. To see the error, delete
-     * this comment and run Flow. */
+    // $FlowFixMe[cannot-spread-indexer] Properties can be overridden.
     bubblingEventTypes: {
       ...ReactNativeViewViewConfig.bubblingEventTypes,
-      ...(viewConfig.bubblingEventTypes || {}),
+      ...(viewConfig.bubblingEventTypes ?? {}: $NonMaybeType<
+        $PropertyType<PartialViewConfig, 'bubblingEventTypes'>,
+      >),
     },
-    /* $FlowFixMe(>=0.122.0 site=react_native_fb) This comment suppresses an
-     * error found when Flow v0.122.0 was deployed. To see the error, delete
-     * this comment and run Flow. */
+    // $FlowFixMe[cannot-spread-indexer] Properties can be overridden.
     directEventTypes: {
       ...ReactNativeViewViewConfig.directEventTypes,
-      ...(viewConfig.directEventTypes || {}),
+      ...(viewConfig.directEventTypes ?? {}: $NonMaybeType<
+        $PropertyType<PartialViewConfig, 'directEventTypes'>,
+      >),
     },
-    /* $FlowFixMe(>=0.122.0 site=react_native_fb) This comment suppresses an
-     * error found when Flow v0.122.0 was deployed. To see the error, delete
-     * this comment and run Flow. */
+    // $FlowFixMe[cannot-spread-indexer] Properties can be overridden.
     validAttributes: {
       ...ReactNativeViewViewConfig.validAttributes,
-      ...(viewConfig.validAttributes || {}),
+      ...(viewConfig.validAttributes ?? {}: $NonMaybeType<
+        $PropertyType<PartialViewConfig, 'validAttributes'>,
+      >),
     },
   };