Use the result of the cache key function

Reviewed By: rafeca

Differential Revision: D7729279

fbshipit-source-id: 1684576cf18dc62a0f4de6249bc3dcd92f7f6c2f

packages/metro/src/Bundler.js

@@ -157,9 +157,8 @@ class Bundler {
     this._baseHash = stableHash([
       opts.assetExts,
       opts.assetRegistryPath,
-      getTransformCacheKey,
+      getTransformCacheKey(),
       opts.minifierPath,
-      'experimental',
     ]).toString('binary');
 
     this._projectRoots = opts.projectRoots;