diff --git a/.eslintignore b/.eslintignore
index 15261d31c47cee..d0528c4a5361c1 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,3 +1,5 @@
-**/node_modules/**/.*js
+# node_modules ignored by default
+
 **/staticBundle.js
 **/main.js
+Libraries/vendor/**/*
diff --git a/Libraries/ART/ARTSerializablePath.js b/Libraries/ART/ARTSerializablePath.js
index 2df8ff6bb83bcd..4e8b3c2271a6c7 100644
--- a/Libraries/ART/ARTSerializablePath.js
+++ b/Libraries/ART/ARTSerializablePath.js
@@ -8,8 +8,7 @@
  *
  * @providesModule ARTSerializablePath
  */
-
-"use strict";
+'use strict';
 
 // TODO: Move this into an ART mode called "serialized" or something
 
diff --git a/Libraries/ART/ReactNativeART.js b/Libraries/ART/ReactNativeART.js
index b2533f2a861437..3b5801d00cc868 100644
--- a/Libraries/ART/ReactNativeART.js
+++ b/Libraries/ART/ReactNativeART.js
@@ -8,8 +8,7 @@
  *
  * @providesModule ReactNativeART
  */
-
-"use strict";
+'use strict';
 
 var Color = require('art/core/color');
 var Path = require('ARTSerializablePath');
diff --git a/Libraries/CustomComponents/Navigator/Navigator.js b/Libraries/CustomComponents/Navigator/Navigator.js
index b8c019e32e458d..063012c14a78b7 100644
--- a/Libraries/CustomComponents/Navigator/Navigator.js
+++ b/Libraries/CustomComponents/Navigator/Navigator.js
@@ -24,6 +24,7 @@
  *
  * @providesModule Navigator
  */
+ /* eslint-disable no-extra-boolean-cast*/
 'use strict';
 
 var AnimationsDebugModule = require('NativeModules').AnimationsDebugModule;
@@ -48,8 +49,6 @@ var clamp = require('clamp');
 var flattenStyle = require('flattenStyle');
 var getNavigatorContext = require('getNavigatorContext');
 var invariant = require('invariant');
-var keyMirror = require('keyMirror');
-var merge = require('merge');
 var rebound = require('rebound');
 
 var PropTypes = React.PropTypes;
@@ -745,7 +744,6 @@ var Navigator = React.createClass({
   },
 
   _handleMoveShouldSetPanResponder: function(e, gestureState) {
-    var currentRoute = this.state.routeStack[this.state.presentedIndex];
     var sceneConfig = this.state.sceneConfigStack[this.state.presentedIndex];
     this._expectingGestureGrant = this._matchGestureAction(this._eligibleGestures, sceneConfig.gestures, gestureState);
     return !! this._expectingGestureGrant;
diff --git a/Libraries/CustomComponents/Navigator/NavigatorSceneConfigs.js b/Libraries/CustomComponents/Navigator/NavigatorSceneConfigs.js
index ed295346d048b5..48be13ea172c2d 100644
--- a/Libraries/CustomComponents/Navigator/NavigatorSceneConfigs.js
+++ b/Libraries/CustomComponents/Navigator/NavigatorSceneConfigs.js
@@ -213,7 +213,7 @@ var FromTheLeft = {
   translateX: {
     from: -SCREEN_WIDTH,
     to: 0,
-    min: 0, 
+    min: 0,
     max: 1,
     type: 'linear',
     extrapolate: true,
diff --git a/Libraries/Fetch/fetch.js b/Libraries/Fetch/fetch.js
index 829f7c4256d63a..b5e8b151c8263d 100644
--- a/Libraries/Fetch/fetch.js
+++ b/Libraries/Fetch/fetch.js
@@ -12,6 +12,7 @@
  * @providesModule fetch
  * @nolint
  */
+/* eslint-disable */
 'use strict';
 
 var self = {};
diff --git a/Libraries/Geolocation/Geolocation.js b/Libraries/Geolocation/Geolocation.js
index fae309aef5fe68..80dbfa19b7e556 100644
--- a/Libraries/Geolocation/Geolocation.js
+++ b/Libraries/Geolocation/Geolocation.js
@@ -120,6 +120,6 @@ var Geolocation = {
       subscriptions = [];
     }
   }
-}
+};
 
 module.exports = Geolocation;
diff --git a/Libraries/JavaScriptAppEngine/Initialization/SourceMap.js b/Libraries/JavaScriptAppEngine/Initialization/SourceMap.js
index 79a5e818cf3647..311e573fc02eb3 100644
--- a/Libraries/JavaScriptAppEngine/Initialization/SourceMap.js
+++ b/Libraries/JavaScriptAppEngine/Initialization/SourceMap.js
@@ -18,6 +18,7 @@
  * and wrapping resulting file into `wrapper` function.
  *
  */
+/*eslint-disable */
 
 var scope = {};
 wrapper.call(scope);
diff --git a/Libraries/JavaScriptAppEngine/Initialization/source-map-url.js b/Libraries/JavaScriptAppEngine/Initialization/source-map-url.js
index 8602288eefd0d6..98610724af2c0c 100644
--- a/Libraries/JavaScriptAppEngine/Initialization/source-map-url.js
+++ b/Libraries/JavaScriptAppEngine/Initialization/source-map-url.js
@@ -11,6 +11,7 @@
  *
  * @nolint
  */
+/* eslint-disable */
 
 (function() {
   var define = null; // Hack to make it work with our packager
diff --git a/Libraries/PushNotificationIOS/PushNotificationIOS.js b/Libraries/PushNotificationIOS/PushNotificationIOS.js
index 9432fbef3f65f8..4d03c6641535f7 100644
--- a/Libraries/PushNotificationIOS/PushNotificationIOS.js
+++ b/Libraries/PushNotificationIOS/PushNotificationIOS.js
@@ -11,7 +11,6 @@
  */
 'use strict';
 
-var NativeModules = require('NativeModules');
 var RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
 var RCTPushNotificationManager = require('NativeModules').PushNotificationManager;
 var invariant = require('invariant');
diff --git a/Libraries/RKBackendNode/queryLayoutByID.js b/Libraries/RKBackendNode/queryLayoutByID.js
index d9b1ed8cceab96..d6492e6da48740 100644
--- a/Libraries/RKBackendNode/queryLayoutByID.js
+++ b/Libraries/RKBackendNode/queryLayoutByID.js
@@ -58,4 +58,3 @@ var queryLayoutByID = function(
 };
 
 module.exports = queryLayoutByID;
-
diff --git a/Libraries/ReactIOS/IOSNativeBridgeEventPlugin.js b/Libraries/ReactIOS/IOSNativeBridgeEventPlugin.js
index b585db5a76f810..55b22a959934e6 100644
--- a/Libraries/ReactIOS/IOSNativeBridgeEventPlugin.js
+++ b/Libraries/ReactIOS/IOSNativeBridgeEventPlugin.js
@@ -9,8 +9,7 @@
  * @providesModule IOSNativeBridgeEventPlugin
  * @flow
  */
-
-"use strict";
+'use strict';
 
 var EventPropagators = require('EventPropagators');
 var NativeModules = require('NativeModules');
@@ -33,7 +32,7 @@ for (var bubblingTypeName in customBubblingEventTypes) {
 for (var directTypeName in customDirectEventTypes) {
   warning(
     !customBubblingEventTypes[directTypeName],
-    "Event cannot be both direct and bubbling: %s",
+    'Event cannot be both direct and bubbling: %s',
     directTypeName
   );
   allTypesByEventName[directTypeName] = customDirectEventTypes[directTypeName];
@@ -76,4 +75,3 @@ var IOSNativeBridgeEventPlugin = {
 };
 
 module.exports = IOSNativeBridgeEventPlugin;
-
diff --git a/Libraries/ReactNative/React.js b/Libraries/ReactNative/React.js
index 1eeeb32c37b659..9cd4464f2860c9 100644
--- a/Libraries/ReactNative/React.js
+++ b/Libraries/ReactNative/React.js
@@ -9,7 +9,6 @@
  * @providesModule React
  * @flow
  */
-
-"use strict";
+'use strict';
 
 module.exports = require('ReactNative');
diff --git a/Libraries/ReactNative/ReactNative.js b/Libraries/ReactNative/ReactNative.js
index abe31a3613f49d..970944baa5ced3 100644
--- a/Libraries/ReactNative/ReactNative.js
+++ b/Libraries/ReactNative/ReactNative.js
@@ -9,7 +9,7 @@
  * @providesModule ReactNative
  * @flow
  */
-"use strict";
+'use strict';
 
 var ReactChildren = require('ReactChildren');
 var ReactClass = require('ReactClass');
diff --git a/Libraries/ReactNative/ReactNativeBaseComponent.js b/Libraries/ReactNative/ReactNativeBaseComponent.js
index dcc31a2b3f3fc3..95af2902353007 100644
--- a/Libraries/ReactNative/ReactNativeBaseComponent.js
+++ b/Libraries/ReactNative/ReactNativeBaseComponent.js
@@ -63,7 +63,8 @@ var cachedIndexArray = function(size) {
     for (var i = 0; i < size; i++) {
       arr[i] = i;
     }
-    return cachedIndexArray._cache[size] = arr;
+    cachedIndexArray._cache[size] = arr;
+    return arr;
   } else {
     return cachedResult;
   }
@@ -228,7 +229,7 @@ ReactNativeBaseComponent.Mixin = {
    */
   _reconcileListenersUponUpdate: function(prevProps, nextProps) {
     for (var key in nextProps) {
-      if (registrationNames[key] && (nextProps[key] != prevProps[key])) {
+      if (registrationNames[key] && (nextProps[key] !== prevProps[key])) {
         putListener(this._rootNodeID, key, nextProps[key]);
       }
     }
diff --git a/Libraries/ReactNative/ReactNativeDOMIDOperations.js b/Libraries/ReactNative/ReactNativeDOMIDOperations.js
index 3b47d4d8f8ca3b..af17f9e0742e4a 100644
--- a/Libraries/ReactNative/ReactNativeDOMIDOperations.js
+++ b/Libraries/ReactNative/ReactNativeDOMIDOperations.js
@@ -9,8 +9,7 @@
  * @providesModule ReactNativeDOMIDOperations
  * @flow
  */
-
-"use strict";
+'use strict';
 
 var ReactNativeTagHandles = require('ReactNativeTagHandles');
 var ReactMultiChildUpdateTypes = require('ReactMultiChildUpdateTypes');
diff --git a/Libraries/ReactNative/ReactNativeDefaultInjection.js b/Libraries/ReactNative/ReactNativeDefaultInjection.js
index 3b15a8cc9f0353..ce040c7791cec6 100644
--- a/Libraries/ReactNative/ReactNativeDefaultInjection.js
+++ b/Libraries/ReactNative/ReactNativeDefaultInjection.js
@@ -9,8 +9,7 @@
  * @providesModule ReactNativeDefaultInjection
  * @flow
  */
-
-"use strict";
+'use strict';
 
 /**
  * Make sure `setTimeout`/`setInterval` are patched correctly.
@@ -21,7 +20,6 @@ var EventPluginUtils = require('EventPluginUtils');
 var IOSDefaultEventPluginOrder = require('IOSDefaultEventPluginOrder');
 var IOSNativeBridgeEventPlugin = require('IOSNativeBridgeEventPlugin');
 var NodeHandle = require('NodeHandle');
-var ReactClass = require('ReactClass');
 var ReactComponentEnvironment = require('ReactComponentEnvironment');
 var ReactDefaultBatchingStrategy = require('ReactDefaultBatchingStrategy');
 var ReactEmptyComponent = require('ReactEmptyComponent');
diff --git a/Libraries/ReactNative/ReactNativeEventEmitter.js b/Libraries/ReactNative/ReactNativeEventEmitter.js
index 9bd344e792dceb..b8f773100d3059 100644
--- a/Libraries/ReactNative/ReactNativeEventEmitter.js
+++ b/Libraries/ReactNative/ReactNativeEventEmitter.js
@@ -9,8 +9,7 @@
  * @providesModule ReactNativeEventEmitter
  * @flow
  */
-
-"use strict";
+'use strict';
 
 var EventPluginHub = require('EventPluginHub');
 var ReactEventEmitterMixin = require('ReactEventEmitterMixin');
diff --git a/Libraries/ReactNative/ReactNativeMount.js b/Libraries/ReactNative/ReactNativeMount.js
index 004a3fbda227fc..82efa57a6fd560 100644
--- a/Libraries/ReactNative/ReactNativeMount.js
+++ b/Libraries/ReactNative/ReactNativeMount.js
@@ -21,7 +21,6 @@ var ReactUpdates = require('ReactUpdates');
 
 var emptyObject = require('emptyObject');
 var instantiateReactComponent = require('instantiateReactComponent');
-var invariant = require('invariant');
 var shouldUpdateReactComponent = require('shouldUpdateReactComponent');
 
 function instanceNumberToChildRootID(rootNodeID, instanceNumber) {
diff --git a/Libraries/ReactNative/ReactNativeReconcileTransaction.js b/Libraries/ReactNative/ReactNativeReconcileTransaction.js
index ac9ed657b5069f..309630e3cc3658 100644
--- a/Libraries/ReactNative/ReactNativeReconcileTransaction.js
+++ b/Libraries/ReactNative/ReactNativeReconcileTransaction.js
@@ -9,8 +9,7 @@
  * @providesModule ReactNativeReconcileTransaction
  * @flow
  */
-
-"use strict";
+'use strict';
 
 var CallbackQueue = require('CallbackQueue');
 var PooledClass = require('PooledClass');
diff --git a/Libraries/ReactNative/createReactNativeComponentClass.js b/Libraries/ReactNative/createReactNativeComponentClass.js
index 3a63089b6628e5..c821cfa758ffc1 100644
--- a/Libraries/ReactNative/createReactNativeComponentClass.js
+++ b/Libraries/ReactNative/createReactNativeComponentClass.js
@@ -10,9 +10,8 @@
  * @flow
  */
 
-"use strict";
+'use strict';
 
-var ReactElement = require('ReactElement');
 var ReactNativeBaseComponent = require('ReactNativeBaseComponent');
 
 // See also ReactNativeBaseComponent
diff --git a/Libraries/Settings/Settings.ios.js b/Libraries/Settings/Settings.ios.js
index c1099df93cbb4f..89388be57b7583 100644
--- a/Libraries/Settings/Settings.ios.js
+++ b/Libraries/Settings/Settings.ios.js
@@ -31,7 +31,7 @@ var Settings = {
   },
 
   watchKeys(keys: string | Array<string>, callback: Function): number {
-    if (typeof keys == 'string') {
+    if (typeof keys === 'string') {
       keys = [keys];
     }
 
@@ -41,7 +41,7 @@ var Settings = {
     );
 
     var sid = subscriptions.length;
-    subscriptions.push({keys: keys, callback: callback})
+    subscriptions.push({keys: keys, callback: callback});
     return sid;
   },
 
@@ -52,15 +52,14 @@ var Settings = {
   },
 
   _sendObservations(body: Object) {
-    var _this = this;
     Object.keys(body).forEach((key) => {
       var newValue = body[key];
-      var didChange = _this._settings[key] !== newValue;
-      _this._settings[key] = newValue;
+      var didChange = this._settings[key] !== newValue;
+      this._settings[key] = newValue;
 
       if (didChange) {
         subscriptions.forEach((sub) => {
-          if (~sub.keys.indexOf(key) && sub.callback) {
+          if (sub.keys.indexOf(key) !== -1 && sub.callback) {
             sub.callback();
           }
         });
diff --git a/Libraries/StyleSheet/EdgeInsetsPropType.js b/Libraries/StyleSheet/EdgeInsetsPropType.js
index 3089fe7bd08598..1850ae6119a61a 100644
--- a/Libraries/StyleSheet/EdgeInsetsPropType.js
+++ b/Libraries/StyleSheet/EdgeInsetsPropType.js
@@ -9,12 +9,11 @@
  * @providesModule EdgeInsetsPropType
  * @flow
  */
-'use strict'
+'use strict';
 
 var PropTypes = require('ReactPropTypes');
 
 var createStrictShapeTypeChecker = require('createStrictShapeTypeChecker');
-var insetsDiffer = require('insetsDiffer');
 
 var EdgeInsetsPropType = createStrictShapeTypeChecker({
   top: PropTypes.number,
diff --git a/Libraries/StyleSheet/PointPropType.js b/Libraries/StyleSheet/PointPropType.js
index 1e8fe95e91646a..606482dd5d7e4d 100644
--- a/Libraries/StyleSheet/PointPropType.js
+++ b/Libraries/StyleSheet/PointPropType.js
@@ -9,12 +9,11 @@
  * @providesModule PointPropType
  * @flow
  */
-'use strict'
+'use strict';
 
 var PropTypes = require('ReactPropTypes');
 
 var createStrictShapeTypeChecker = require('createStrictShapeTypeChecker');
-var pointsDiffer = require('pointsDiffer');
 
 var PointPropType = createStrictShapeTypeChecker({
   x: PropTypes.number,
diff --git a/Libraries/Utilities/ErrorUtils.js b/Libraries/Utilities/ErrorUtils.js
index 666d536be32232..b66b085465f86a 100644
--- a/Libraries/Utilities/ErrorUtils.js
+++ b/Libraries/Utilities/ErrorUtils.js
@@ -8,6 +8,7 @@
  *
  * @providesModule ErrorUtils
  */
+/* eslint-disable consistent-this, global-strict */
 
 var GLOBAL = this;
 
diff --git a/Libraries/Utilities/MatrixMath.js b/Libraries/Utilities/MatrixMath.js
index a7f08260492b98..0550eb1876dd36 100755
--- a/Libraries/Utilities/MatrixMath.js
+++ b/Libraries/Utilities/MatrixMath.js
@@ -3,6 +3,7 @@
  *
  * @providesModule MatrixMath
  */
+/* eslint-disable space-infix-ops */
 'use strict';
 
 var invariant = require('invariant');
diff --git a/Libraries/Utilities/RCTLog.js b/Libraries/Utilities/RCTLog.js
index e5a8db49c4bd5f..b76a91a58386e3 100644
--- a/Libraries/Utilities/RCTLog.js
+++ b/Libraries/Utilities/RCTLog.js
@@ -9,7 +9,6 @@
  * @providesModule RCTLog
  * @flow
  */
- /* globals nativeLoggingHook */
 'use strict';
 
 var invariant = require('invariant');
diff --git a/Libraries/Utilities/RCTRenderingPerf.js b/Libraries/Utilities/RCTRenderingPerf.js
index c6466aa641afc3..126c8a0328528d 100644
--- a/Libraries/Utilities/RCTRenderingPerf.js
+++ b/Libraries/Utilities/RCTRenderingPerf.js
@@ -12,7 +12,6 @@
 'use strict';
 
 var ReactDefaultPerf = require('ReactDefaultPerf');
-var ReactPerf = require('ReactPerf');
 
 var invariant = require('invariant');
 
diff --git a/Libraries/Utilities/__mocks__/ErrorUtils.js b/Libraries/Utilities/__mocks__/ErrorUtils.js
index 99db791774a441..59fbbafbc9041c 100644
--- a/Libraries/Utilities/__mocks__/ErrorUtils.js
+++ b/Libraries/Utilities/__mocks__/ErrorUtils.js
@@ -6,7 +6,7 @@
 
 function execute(fun, context, args) {
   return fun.apply(context, args);
-};
+}
 
 function reportError(error) {
   throw error;
diff --git a/Libraries/Utilities/buildStyleInterpolator.js b/Libraries/Utilities/buildStyleInterpolator.js
index 67f07cb415ad39..5e6515cc02a42f 100644
--- a/Libraries/Utilities/buildStyleInterpolator.js
+++ b/Libraries/Utilities/buildStyleInterpolator.js
@@ -7,6 +7,7 @@
 /**
  * Cannot "use strict" because we must use eval in this file.
  */
+/* eslint-disable global-strict */
 
 var keyOf = require('keyOf');
 
@@ -372,7 +373,7 @@ var MatrixOpsInitial = {
 var setNextValAndDetectChange = function(name, tmpVarName) {
   return (
     '  if (!didChange) {\n' +
-    '    var prevVal = result.' + name +';\n' +
+    '    var prevVal = result.' + name + ';\n' +
     '    result.' + name + ' = ' + tmpVarName + ';\n' +
     '    didChange = didChange  || (' + tmpVarName + ' !== prevVal);\n' +
     '  } else {\n' +
diff --git a/Libraries/Utilities/truncate.js b/Libraries/Utilities/truncate.js
index 1d318e8353d6b1..a15da571bfdeed 100644
--- a/Libraries/Utilities/truncate.js
+++ b/Libraries/Utilities/truncate.js
@@ -45,4 +45,3 @@ var truncate = function(
 };
 
 module.exports = truncate;
-
diff --git a/package.json b/package.json
index d524c1785067b2..6c4fa493dcaf39 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
   ],
   "scripts": {
     "test": "jest",
-    "lint": "node linter.js Examples/ Libraries/Components",
+    "lint": "node linter.js Examples/ Libraries/",
     "start": "./packager/packager.sh"
   },
   "bin": {