diff --git a/packager/react-packager/src/DependencyResolver/Cache/index.js b/packager/react-packager/src/DependencyResolver/Cache/index.js
index 06d346d62..4e1698cb3 100644
--- a/packager/react-packager/src/DependencyResolver/Cache/index.js
+++ b/packager/react-packager/src/DependencyResolver/Cache/index.js
@@ -53,7 +53,7 @@ class Cache {
 
     var recordP = this.has(filepath, field)
       ? this._data[filepath].data[field]
-      : this._set(filepath, field, loaderCb(filepath));
+      : this.set(filepath, field, loaderCb(filepath));
 
     return recordP.then(record => record);
   }
@@ -77,7 +77,7 @@ class Cache {
       (field == null || Object.prototype.hasOwnProperty.call(this._data[filepath].data, field));
   }
 
-  _set(filepath, field, loaderPromise) {
+  set(filepath, field, loaderPromise) {
     let record = this._data[filepath];
     if (!record) {
       record = Object.create(null);
diff --git a/packager/react-packager/src/DependencyResolver/DependencyGraph/index.js b/packager/react-packager/src/DependencyResolver/DependencyGraph/index.js
index ed09f91ad..bc5d85d78 100644
--- a/packager/react-packager/src/DependencyResolver/DependencyGraph/index.js
+++ b/packager/react-packager/src/DependencyResolver/DependencyGraph/index.js
@@ -158,6 +158,10 @@ class DependencyGraph {
     return this._moduleCache.getModule(entryFile);
   }
 
+  getAllModules() {
+    return this.load().then(() => this._moduleCache.getAllModules());
+  }
+
   getDependencies(entryPath, platform, recursive = true) {
     return this.load().then(() => {
       platform = this._getRequestPlatform(entryPath, platform);
diff --git a/packager/react-packager/src/DependencyResolver/ModuleCache.js b/packager/react-packager/src/DependencyResolver/ModuleCache.js
index fac1820b8..3fcfb173a 100644
--- a/packager/react-packager/src/DependencyResolver/ModuleCache.js
+++ b/packager/react-packager/src/DependencyResolver/ModuleCache.js
@@ -41,6 +41,10 @@ class ModuleCache {
     return this._moduleCache[filePath];
   }
 
+  getAllModules() {
+    return this._moduleCache;
+  }
+
   getAssetModule(filePath) {
     filePath = path.resolve(filePath);
     if (!this._moduleCache[filePath]) {
diff --git a/packager/react-packager/src/DependencyResolver/__tests__/fastfs-integrated-test.js b/packager/react-packager/src/DependencyResolver/__tests__/fastfs-integrated-test.js
index f7fb35588..cbff314af 100644
--- a/packager/react-packager/src/DependencyResolver/__tests__/fastfs-integrated-test.js
+++ b/packager/react-packager/src/DependencyResolver/__tests__/fastfs-integrated-test.js
@@ -8,7 +8,8 @@
  */
 'use strict';
 
-jest.autoMockOff();
+jest.autoMockOff()
+  .dontMock('graceful-fs');
 
 const Fastfs = require('../fastfs');