Update Platform.web.js

facebook · Feb 12, 2019 · 11b158c · 11b158c
1 parent dd344e6
commit 11b158c
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/Libraries/Utilities/Platform.web.js b/Libraries/Utilities/Platform.web.js
@@ -10,9 +10,15 @@
 
 'use strict';
 
+export type PlatformSelectSpec<D, I> = {
+  default?: D,
+  web?: I,
+};
+
 const Platform = {
   OS: 'web',
-  select: (obj: Object) => ('web' in obj ? obj.web : obj.default),
+  select: <D, I>(spec: PlatformSelectSpec<D, I>): D | I =>
+    'web' in spec ? spec.web : spec.default,
 };
 
 module.exports = Platform;