diff --git a/src/module-cache.coffee b/src/module-cache.coffee
index 1270e1e5c..6fff2ace2 100644
--- a/src/module-cache.coffee
+++ b/src/module-cache.coffee
@@ -95,3 +95,18 @@ exports.register = ->
     resolvedPath = getCachedModulePath(relativePath, parentModule)
     resolvedPath ? originalResolveFilename(relativePath, parentModule)
   registered = true
+
+dependencies = {}
+folders = {}
+
+global.mc = {dependencies, folders}
+
+exports.add = (directoryPath) ->
+  cache = require(path.join(directoryPath, 'package.json'))?._atomModuleCache
+  for dependency in cache?.dependencies ? []
+    dependencies[dependency.name] ?= {}
+    dependencies[dependency.name][dependency.version] = path.join(directoryPath, dependency.path)
+
+  for entry in cache?.folders ? []
+    for folderPath in entry.paths
+      folders[path.join(directoryPath, folderPath)] = entry.dependencies
diff --git a/src/window-bootstrap.coffee b/src/window-bootstrap.coffee
index 7312f99a5..bf0aabb3a 100644
--- a/src/window-bootstrap.coffee
+++ b/src/window-bootstrap.coffee
@@ -1,7 +1,10 @@
 # Like sands through the hourglass, so are the days of our lives.
 startTime = Date.now()
 
-require('./module-cache').register()
+ModuleCache = require('./module-cache')
+ModuleCache.add(JSON.parse(decodeURIComponent(location.search.substr(14))).resourcePath)
+ModuleCache.register()
+
 require './window'
 
 Atom = require './atom'