[react-packager] Add more granular Activity logging

react-packager/src/DependencyResolver/DependencyGraph/index.js

@@ -101,7 +101,7 @@ class DependencyGraph {
     this._loading = Promise.all([
       this._fastfs.build()
         .then(() => {
-          const hasteActivity = Activity.startEvent('haste map');
+          const hasteActivity = Activity.startEvent('Building Haste Map');
           this._buildHasteMap().then(() => Activity.endEvent(hasteActivity));
         }),
       this._buildAssetMap_DEPRECATED(),
@@ -518,9 +518,18 @@ class DependencyGraph {
     fastfs.on('change', this._processAssetChange_DEPRECATED.bind(this));
 
     return fastfs.build().then(
-      () => fastfs.findFilesByExts(this._opts.assetExts).map(
+      () => {
-        file => this._processAsset_DEPRECATED(file)
+        const processAsset_DEPRECATEDActivity = Activity.startEvent(
-      )
+          'Building (deprecated) Asset Map',
+        );
+
+        const assets = fastfs.findFilesByExts(this._opts.assetExts).map(
+          file => this._processAsset_DEPRECATED(file)
+        );
+
+        Activity.endEvent(processAsset_DEPRECATEDActivity);
+        return assets;
+      }
     );
   }
 

react-packager/src/DependencyResolver/fastfs.js

@@ -1,5 +1,6 @@
 'use strict';
 
+const Activity = require('../Activity');
 const Promise = require('promise');
 const {EventEmitter} = require('events');
 
@@ -28,6 +29,7 @@ class Fastfs extends EventEmitter {
     );
 
     return this._crawling.then(files => {
+      const fastfsActivity = Activity.startEvent('Building in-memory fs');
       files.forEach(filePath => {
         if (filePath.match(rootsPattern)) {
           const newFile = new File(filePath, { isDir: false });
@@ -44,6 +46,7 @@ class Fastfs extends EventEmitter {
           }
         }
       });
+      Activity.endEvent(fastfsActivity);
       this._fileWatcher.on('all', this._processFileChange.bind(this));
     });
   }