fix - verbose bundle size output is no longer [object Object] (#97)

* fix - verbose bundle size output is no longer [object Object]

* fix - verbose bundle size output is no longer [object Object]

* Revert "fix - verbose bundle size output is no longer [object Object]"

This reverts commit 3ccc389.

* chore - optional chaining removed

Co-authored-by: Omer Gurarslan <omer@asquared.uk>

Author: omerg

src/react-native-bundle-visualizer.js

@@ -169,7 +169,7 @@ bundlePromise
       result.bundles.forEach((bundle) => {
         Object.keys(bundle.files).forEach((file) => {
           console.log(
-            chalk.green(file + ', size: ' + bundle.files[file] + ' bytes')
+            chalk.green(file + ', size: ' + bundle.files[file].size + ' bytes')
           );
         });
       });