diff --git a/packager/react-packager/src/DependencyResolver/DependencyGraph/__tests__/DependencyGraph-test.js b/packager/react-packager/src/DependencyResolver/DependencyGraph/__tests__/DependencyGraph-test.js
index d830cc825..8b50c8b49 100644
--- a/packager/react-packager/src/DependencyResolver/DependencyGraph/__tests__/DependencyGraph-test.js
+++ b/packager/react-packager/src/DependencyResolver/DependencyGraph/__tests__/DependencyGraph-test.js
@@ -1362,19 +1362,19 @@ describe('DependencyGraph', function() {
       });
     });
 
-    testBrowserField('browser')
-    testBrowserField('react-native')
+    testBrowserField('browser');
+    testBrowserField('react-native');
 
-    function replaceBrowserField (json, fieldName) {
+    function replaceBrowserField(json, fieldName) {
       if (fieldName !== 'browser') {
-        json[fieldName] = json.browser
-        delete json.browser
+        json[fieldName] = json.browser;
+        delete json.browser;
       }
 
-      return json
+      return json;
     }
 
-    function testBrowserField (fieldName) {
+    function testBrowserField(fieldName) {
       pit('should support simple browser field in packages ("' + fieldName + '")', function() {
         var root = '/root';
         fs.__setMockFilesystem({
@@ -1393,8 +1393,8 @@ describe('DependencyGraph', function() {
               }, fieldName)),
               'main.js': 'some other code',
               'client.js': 'some code',
-            }
-          }
+            },
+          },
         });
 
         var dgraph = new DependencyGraph({
@@ -1448,8 +1448,8 @@ describe('DependencyGraph', function() {
               }, fieldName)),
               'main.js': 'some other code',
               'client.js': 'some code',
-            }
-          }
+            },
+          },
         });
 
         var dgraph = new DependencyGraph({
@@ -1503,8 +1503,8 @@ describe('DependencyGraph', function() {
               }, fieldName)),
               'main.js': 'some other code',
               'client.js': 'some code',
-            }
-          }
+            },
+          },
         });
 
         var dgraph = new DependencyGraph({
@@ -1559,8 +1559,8 @@ describe('DependencyGraph', function() {
               }, fieldName)),
               'main.js': 'some other code',
               'client.js': 'some code',
-            }
-          }
+            },
+          },
         });
 
         var dgraph = new DependencyGraph({
@@ -1630,15 +1630,15 @@ describe('DependencyGraph', function() {
               },
               'hello.js': 'hello',
               'bye.js': 'bye',
-            }
-          }
+            },
+          },
         });
 
-      var dgraph = new DependencyGraph({
-        ...defaults,
-        roots: [root],
-      });
-      return getOrderedDependenciesAsJSON(dgraph, '/root/index.js').then(function(deps) {
+        const dgraph = new DependencyGraph({
+          ...defaults,
+          roots: [root],
+        });
+        return getOrderedDependenciesAsJSON(dgraph, '/root/index.js').then(function(deps) {
           expect(deps)
             .toEqual([
               { id: 'index',
@@ -1716,7 +1716,7 @@ describe('DependencyGraph', function() {
                 name: 'aPackage',
                 browser: {
                   'node-package': 'browser-package',
-                }
+                },
               }, fieldName)),
               'index.js': 'require("node-package")',
               'node-package': {
@@ -1731,8 +1731,8 @@ describe('DependencyGraph', function() {
                 }),
                 'index.js': 'some browser code',
               },
-            }
-          }
+            },
+          },
         });
 
         var dgraph = new DependencyGraph({
@@ -1788,7 +1788,7 @@ describe('DependencyGraph', function() {
                 name: 'aPackage',
                 browser: {
                   'node-package': 'browser-package',
-                }
+                },
               }, fieldName)),
               'index.js': 'require("node-package")',
               'node-package': {
@@ -1803,8 +1803,8 @@ describe('DependencyGraph', function() {
                 }),
                 'index.js': 'some browser code',
               },
-            }
-          }
+            },
+          },
         });
 
         var dgraph = new DependencyGraph({
@@ -1861,13 +1861,13 @@ describe('DependencyGraph', function() {
               name: 'aPackage',
               'react-native': {
                 'node-package': 'rn-package',
-              }
+              },
             }),
             'index.js': 'require("node-package")',
             'node_modules': {
               'node-package': {
                 'package.json': JSON.stringify({
-                  'name': 'node-package'
+                  'name': 'node-package',
                 }),
                 'index.js': 'some node code',
               },
@@ -1875,8 +1875,8 @@ describe('DependencyGraph', function() {
                 'package.json': JSON.stringify({
                   'name': 'rn-package',
                   browser: {
-                    'nested-package': 'nested-browser-package'
-                  }
+                    'nested-package': 'nested-browser-package',
+                  },
                 }),
                 'index.js': 'require("nested-package")',
               },
@@ -1884,11 +1884,11 @@ describe('DependencyGraph', function() {
                 'package.json': JSON.stringify({
                   'name': 'nested-browser-package',
                 }),
-                'index.js': 'some code'
-              }
-            }
-          }
-        }
+                'index.js': 'some code',
+              },
+            },
+          },
+        },
       });
 
       var dgraph = new DependencyGraph({
diff --git a/packager/react-packager/src/DependencyResolver/DependencyGraph/docblock.js b/packager/react-packager/src/DependencyResolver/DependencyGraph/docblock.js
index 131f09d1f..d710112a9 100644
--- a/packager/react-packager/src/DependencyResolver/DependencyGraph/docblock.js
+++ b/packager/react-packager/src/DependencyResolver/DependencyGraph/docblock.js
@@ -25,7 +25,7 @@ function extract(contents) {
 }
 
 
-var commentStartRe = /^\/\*\*?/;
+var commentStartRe = /^\/\*\*/;
 var commentEndRe = /\*\/$/;
 var wsRe = /[\t ]+/g;
 var stringStartRe = /(\r?\n|^) *\*/g;
diff --git a/packager/react-packager/src/DependencyResolver/Package.js b/packager/react-packager/src/DependencyResolver/Package.js
index 2117e3f19..ac7ee88c1 100644
--- a/packager/react-packager/src/DependencyResolver/Package.js
+++ b/packager/react-packager/src/DependencyResolver/Package.js
@@ -15,7 +15,7 @@ class Package {
 
   getMain() {
     return this._read().then(json => {
-      var replacements = getReplacements(json)
+      var replacements = getReplacements(json);
       if (typeof replacements === 'string') {
         return path.join(this.root, replacements);
       }
diff --git a/packager/react-packager/src/DependencyResolver/replacePatterns.js b/packager/react-packager/src/DependencyResolver/replacePatterns.js
deleted file mode 100644
index a4e563d2c..000000000
--- a/packager/react-packager/src/DependencyResolver/replacePatterns.js
+++ /dev/null
@@ -1,15 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-'use strict';
-
-exports.IMPORT_RE = /(\bimport\s+(?:[^'"]+\s+from\s+)??)(['"])([^'"]+)(\2)/g;
-exports.EXPORT_RE = /(\bexport\s+(?:[^'"]+\s+from\s+)??)(['"])([^'"]+)(\2)/g;
-exports.REQUIRE_RE = /(\brequire\s*?\(\s*?)(['"])([^'"]+)(\2\s*?\))/g;
-exports.SYSTEM_IMPORT_RE = /(\bSystem\.import\s*?\(\s*?)(['"])([^'"]+)(\2\s*?\))/g;