[react-packager][streamline oss] Move open sourced JS source to react-native-github

Libraries/Components/Touchable/ensureComponentIsNative.js

@@ -0,0 +1,18 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @providesModule ensureComponentIsNative
+ */
+'use strict';
+
+var invariant = require('invariant');
+
+var ensureComponentIsNative = function(component) {
+  invariant(
+    component && typeof component.setNativeProps === 'function',
+    'Touchable child must either be native or forward setNativeProps to a ' +
+    'native component'
+  );
+};
+
+module.exports = ensureComponentIsNative;