Remove Unused Exports from StyleSheetTypes

Summary: These types were barely used and unnecessary.

Reviewed By: yungsters

Differential Revision: D7177287

fbshipit-source-id: 63cb6d3aae4889a92b2c23f0df864b5657e6e1ee

Libraries/StyleSheet/StyleSheet.js

@@ -20,14 +20,13 @@ import type {
   StyleSheetStyle as _StyleSheetStyle,
   Styles as _Styles,
   StyleSheet as _StyleSheet,
-  StyleValue as _StyleValue,
   StyleObj,
+  LayoutStyle
 } from 'StyleSheetTypes';
 
 export type StyleProp = StyleObj;
 export type Styles = _Styles;
 export type StyleSheet<S> = _StyleSheet<S>;
-export type StyleValue = _StyleValue;
 export type StyleSheetStyle = _StyleSheetStyle;
 
 let hairlineWidth = PixelRatio.roundToNearestPixel(0.4);
@@ -35,14 +34,14 @@ if (hairlineWidth === 0) {
   hairlineWidth = 1 / PixelRatio.get();
 }
 
-const absoluteFillObject = {
-  position: ('absolute': 'absolute'),
+const absoluteFillObject: LayoutStyle = {
+  position: 'absolute',
   left: 0,
   right: 0,
   top: 0,
   bottom: 0,
 };
-const absoluteFill: typeof absoluteFillObject =
+const absoluteFill: StyleSheetStyle =
   ReactNativePropRegistry.register(absoluteFillObject); // This also freezes it
 
 /**

Libraries/StyleSheet/StyleSheetTypes.js

@@ -220,7 +220,7 @@ export type Style = {
   +overlayColor?: string,
 };
 
-export type StyleProp<+T> =
+type GenericStyleProp<+T> =
   | null
   | void
   | T
@@ -228,26 +228,18 @@ export type StyleProp<+T> =
   | number
   | false
   | ''
-  | $ReadOnlyArray<StyleProp<T>>;
+  | $ReadOnlyArray<GenericStyleProp<T>>;
 
-// export type ViewStyleProp = StyleProp<$Shape<ViewStyle<DimensionValue>>>;
-// export type TextStyleProp = StyleProp<
-//   $Shape<TextStyle<DimensionValue, ColorValue>>,
-// >;
-// export type ImageStyleProp = StyleProp<
-//   $Shape<ImageStyle<DimensionValue, ColorValue>>,
-// >;
+export type StyleObj = GenericStyleProp<$Shape<Style>>;
 
-export type StyleObj = StyleProp<$Shape<Style>>;
-export type StyleValue = StyleObj;
-
-export type ViewStyleProp = StyleProp<$ReadOnly<$Shape<ViewStyle>>>;
-export type TextStyleProp = StyleProp<$ReadOnly<$Shape<TextStyle>>>;
-export type ImageStyleProp = StyleProp<$ReadOnly<$Shape<ImageStyle>>>;
+export type ViewStyleProp = GenericStyleProp<$ReadOnly<$Shape<ViewStyle>>>;
+export type TextStyleProp = GenericStyleProp<$ReadOnly<$Shape<TextStyle>>>;
+export type ImageStyleProp = GenericStyleProp<$ReadOnly<$Shape<ImageStyle>>>;
 
 export type Styles = {
   +[key: string]: $Shape<Style>,
 };
+
 export type StyleSheet<+S: Styles> = $ObjMap<S, (Object) => StyleSheetStyle>;
 
 /*

Libraries/StyleSheet/flattenStyle.js

@@ -11,7 +11,7 @@
 
 var ReactNativePropRegistry;
 
-import type { StyleProp, Style } from 'StyleSheetTypes';
+import type { StyleObj, Style } from 'StyleSheetTypes';
 
 function getStyle(style) {
   if (ReactNativePropRegistry === undefined) {
@@ -23,7 +23,7 @@ function getStyle(style) {
   return style;
 }
 
-function flattenStyle(style: ?StyleProp<Style>): ?Style {
+function flattenStyle(style: ?StyleObj): ?Style {
   if (style == null) {
     return undefined;
   }