Move and Rename propType definitions in ShadowPropTypesIOS (#21379)

Summary:
related #21342

move TransformPropTypes.js
fix flow error

- [x] yarn prettier
- [x] yarn flow-check-android
- [x] yarn flow-check-ios

All flow checks pass.

[GENERAL] [ENHANCEMENT] [DeprecatedShadowPropTypesIOS.js] - Created.
Pull Request resolved: #21379

Differential Revision: D10098750

Pulled By: TheSavior

fbshipit-source-id: f7f2e4bf7b837c00a14b1fbd930d1b29ffb63549

Libraries/Components/View/ViewStylePropTypes.js

@@ -13,15 +13,15 @@
 const DeprecatedColorPropType = require('DeprecatedColorPropType');
 const LayoutPropTypes = require('LayoutPropTypes');
 const ReactPropTypes = require('prop-types');
-const ShadowPropTypesIOS = require('ShadowPropTypesIOS');
+const DeprecatedShadowPropTypesIOS = require('DeprecatedShadowPropTypesIOS');
 const DeprecatedTransformPropTypes = require('DeprecatedTransformPropTypes');
 
 /**
  * Warning: Some of these properties may not be supported in all releases.
  */
 const ViewStylePropTypes = {
   ...LayoutPropTypes,
-  ...ShadowPropTypesIOS,
+  ...DeprecatedShadowPropTypesIOS,
   ...DeprecatedTransformPropTypes,
   backfaceVisibility: ReactPropTypes.oneOf(['visible', 'hidden']),
   backgroundColor: DeprecatedColorPropType,

Libraries/DeprecatedPropTypes/DeprecatedShadowPropTypesIOS.js

@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ * @format
+ */
+'use strict';
+
+const DeprecatedColorPropType = require('DeprecatedColorPropType');
+const ReactPropTypes = require('prop-types');
+
+const DeprecatedShadowPropTypesIOS = {
+  shadowColor: DeprecatedColorPropType,
+  shadowOffset: ReactPropTypes.shape({
+    width: ReactPropTypes.number,
+    height: ReactPropTypes.number,
+  }),
+  shadowOpacity: ReactPropTypes.number,
+  shadowRadius: ReactPropTypes.number,
+};
+
+module.exports = DeprecatedShadowPropTypesIOS;

Libraries/Image/ImageStylePropTypes.js

@@ -13,12 +13,12 @@ const DeprecatedColorPropType = require('DeprecatedColorPropType');
 const ImageResizeMode = require('ImageResizeMode');
 const LayoutPropTypes = require('LayoutPropTypes');
 const ReactPropTypes = require('prop-types');
-const ShadowPropTypesIOS = require('ShadowPropTypesIOS');
+const DeprecatedShadowPropTypesIOS = require('DeprecatedShadowPropTypesIOS');
 const DeprecatedTransformPropTypes = require('DeprecatedTransformPropTypes');
 
 const ImageStylePropTypes = {
   ...LayoutPropTypes,
-  ...ShadowPropTypesIOS,
+  ...DeprecatedShadowPropTypesIOS,
   ...DeprecatedTransformPropTypes,
   resizeMode: ReactPropTypes.oneOf(Object.keys(ImageResizeMode)),
   backfaceVisibility: ReactPropTypes.oneOf(['visible', 'hidden']),

Libraries/StyleSheet/StyleSheetTypes.js

@@ -131,13 +131,38 @@ export type ____TransformStyle_Internal = $ReadOnly<{|
   >,
 |}>;
 
+/**
+ * These props can be used to dynamically generate shadows on views, images, text, etc.
+ *
+ * Because they are dynamically generated, they may cause performance regressions. Static
+ * shadow image asset may be a better way to go for optimal performance.
+ *
+ * These properties are iOS only - for similar functionality on Android, use the [`elevation`
+ * property](docs/viewstyleproptypes.html#elevation).
+ */
 export type ____ShadowStyle_Internal = $ReadOnly<{|
+  /**
+   * Sets the drop shadow color
+   * @platform ios
+   */
   shadowColor?: ColorValue,
+  /**
+   * Sets the drop shadow offset
+   * @platform ios
+   */
   shadowOffset?: $ReadOnly<{|
     width?: number,
     height?: number,
   |}>,
+  /**
+   * Sets the drop shadow opacity (multiplied by the color's alpha component)
+   * @platform ios
+   */
   shadowOpacity?: number | AnimatedNode,
+  /**
+   * Sets the drop shadow blur radius
+   * @platform ios
+   */
   shadowRadius?: number,
 |}>;