Correct the Image docs

docs/components/Image.md

@@ -46,7 +46,7 @@ Invoked when load either succeeds or fails,
 
 Invoked on load start.
 
-**resizeMode**: oneOf('center', 'contain', 'cover', 'none', 'repeat', 'stretch') = 'stretch'
+**resizeMode**: oneOf('center', 'contain', 'cover', 'none', 'repeat', 'stretch') = 'cover'
 
 Determines how to resize the image when the frame doesn't match the raw image
 dimensions.

src/components/Image/ImageResizeMode.js

@@ -1,12 +1,10 @@
-import keyMirror from 'fbjs/lib/keyMirror';
-
-const ImageResizeMode = keyMirror({
-  center: null,
-  contain: null,
-  cover: null,
-  none: null,
-  repeat: null,
-  stretch: null
-});
+const ImageResizeMode = {
+  center: 'center',
+  contain: 'contain',
+  cover: 'cover',
+  none: 'none',
+  repeat: 'repeat',
+  stretch: 'stretch'
+};
 
 module.exports = ImageResizeMode;

src/components/Image/index.js

@@ -4,7 +4,6 @@ import BaseComponentPropTypes from '../../propTypes/BaseComponentPropTypes';
 import createDOMElement from '../../modules/createDOMElement';
 import ImageResizeMode from './ImageResizeMode';
 import ImageStylePropTypes from './ImageStylePropTypes';
-import resolveAssetSource from './resolveAssetSource';
 import StyleSheet from '../../apis/StyleSheet';
 import StyleSheetPropType from '../../propTypes/StyleSheetPropType';
 import View from '../View';
@@ -23,6 +22,10 @@ const ImageSourcePropType = PropTypes.oneOfType([
   PropTypes.string
 ]);
 
+const resolveAssetSource = (source) => {
+  return ((typeof source === 'object') ? source.uri : source) || null;
+};
+
 class Image extends Component {
   static displayName = 'Image';
 
@@ -35,7 +38,7 @@ class Image extends Component {
     onLoad: PropTypes.func,
     onLoadEnd: PropTypes.func,
     onLoadStart: PropTypes.func,
-    resizeMode: PropTypes.oneOf([ 'center', 'contain', 'cover', 'none', 'repeat', 'stretch' ]),
+    resizeMode: PropTypes.oneOf(Object.keys(ImageResizeMode)),
     source: ImageSourcePropType,
     style: StyleSheetPropType(ImageStylePropTypes)
   };

src/components/Image/resolveAssetSource.js

@@ -1,5 +0,0 @@
-function resolveAssetSource(source) {
-  return ((typeof source === 'object') ? source.uri : source) || null;
-}
-
-module.exports = resolveAssetSource;