diff --git a/src/core/ReactComponent.js b/src/core/ReactComponent.js
index 8e7a64ad9e..67b4e90207 100644
--- a/src/core/ReactComponent.js
+++ b/src/core/ReactComponent.js
@@ -16,6 +16,8 @@
  * @providesModule ReactComponent
  */
 
+/*jslint evil: true */
+
 "use strict";
 
 var ReactCurrentOwner = require('ReactCurrentOwner');
@@ -125,7 +127,9 @@ function assignKey(groupingIndex, child, index) {
 function tryToReuseArray(children) {
   for (var i = 0; i < children.length; i++) {
     var child = children[i];
-    if (isEmptyChild(child)) return false;
+    if (isEmptyChild(child)) {
+      return false;
+    }
     assignKey(0, child, i);
   }
   return true;
@@ -142,7 +146,9 @@ function tryToReuseArray(children) {
 function appendNestedChildren(groupingIndex, sourceArray, targetArray) {
   for (var i = 0; i < sourceArray.length; i++) {
     var child = sourceArray[i];
-    if (isEmptyChild(child)) continue;
+    if (isEmptyChild(child)) {
+      continue;
+    }
     assignKey(groupingIndex, child, i);
     // TODO: Invalid components like strings could possibly need
     // keys assigned to them here. Usually they're not stateful but
@@ -338,9 +344,13 @@ var ReactComponent = {
       for (var i = 1; i < arguments.length; i++) {
         var child = arguments[i];
         if (Array.isArray(child)) {
-          if (child.length === 0) continue;
+          if (child.length === 0) {
+            continue;
+          }
 
-          if (targetArray === null) targetArray = [];
+          if (targetArray === null) {
+            targetArray = [];
+          }
           appendNestedChildren(i - 1, child, targetArray);
 
         } else if (!isEmptyChild(child)) {
@@ -352,7 +362,9 @@ var ReactComponent = {
             child._key = createKey(child.props.key, i - 1);
           }
 
-          if (targetArray === null) targetArray = [];
+          if (targetArray === null) {
+            targetArray = [];
+          }
           targetArray.push(child);
 
         }
diff --git a/src/core/ReactCurrentOwner.js b/src/core/ReactCurrentOwner.js
index 4a6b96ef96..9ac0ab6ede 100644
--- a/src/core/ReactCurrentOwner.js
+++ b/src/core/ReactCurrentOwner.js
@@ -40,7 +40,9 @@ var ReactCurrentOwner = {
    */
   getDepth: function() {
     var owner = ReactCurrentOwner.current;
-    if (!owner) return 0;
+    if (!owner) {
+      return 0;
+    }
     return owner._compositionLevel;
   }
 
diff --git a/src/core/__tests__/ReactDOM-test.js b/src/core/__tests__/ReactDOM-test.js
index f327b147b9..3d20fd6e16 100644
--- a/src/core/__tests__/ReactDOM-test.js
+++ b/src/core/__tests__/ReactDOM-test.js
@@ -17,6 +17,8 @@
  * @emails react-core
  */
 
+/*jslint evil: true */
+
 "use strict";
 
 var React = require('React');
@@ -81,27 +83,30 @@ describe('ref swapping', function() {
         theBird: <div class="bird" />
       }}</div>
     );
+    // Warm the cache with theDog
     myDiv.setProps({
       children: {
-        theDog: <div class="dogbeforedelete" />,  // Warm the cache with theDog
+        theDog: <div class="dogbeforedelete" />,
         theBird: <div class="bird" />
       }
     });
-    myDiv.setProps({
-      children: {                                 // This better purge that cache
-        theBird: <div class="bird" />
-      }
-    });
-    // Now, put the dog back.
+    // Remove theDog - this should purge the cache
     myDiv.setProps({
       children: {
-        theDog: <div class="dog" />,       // This is a different node than before
         theBird: <div class="bird" />
       }
     });
+    // Now, put theDog back. It's now a different DOM node.
     myDiv.setProps({
-      children: {                          // className changed to bigdog.
-        theDog: <div class="bigdog" />,    // but will it use the proper element
+      children: {
+        theDog: <div class="dog" />,
+        theBird: <div class="bird" />
+      }
+    });
+    // Change the className of theDog. It will use the same element
+    myDiv.setProps({
+      children: {
+        theDog: <div class="bigdog" />,
         theBird: <div class="bird" />
       }
     });
diff --git a/src/core/__tests__/ReactInstanceHandles-test.js b/src/core/__tests__/ReactInstanceHandles-test.js
index 4c7b227381..95e03d8250 100644
--- a/src/core/__tests__/ReactInstanceHandles-test.js
+++ b/src/core/__tests__/ReactInstanceHandles-test.js
@@ -22,8 +22,6 @@
 var React = require('React');
 var ReactTestUtils = require('ReactTestUtils');
 
-var reactComponentExpect= require('reactComponentExpect');
-
 /**
  * Ensure that all callbacks are invoked, passing this unique argument.
  */
diff --git a/src/core/__tests__/ReactMountDestruction-test.js b/src/core/__tests__/ReactMountDestruction-test.js
index 6a993ea680..2654dfc632 100644
--- a/src/core/__tests__/ReactMountDestruction-test.js
+++ b/src/core/__tests__/ReactMountDestruction-test.js
@@ -19,12 +19,7 @@
 
 "use strict";
 
-var ReactMount = require('ReactMount');
 var React = require('React');
-var ReactTestUtils = require('ReactTestUtils');
-var ReactMount = require('ReactMount');
-
-var reactComponentExpect = require('reactComponentExpect');
 
 describe('ReactMount', function() {
   it("should destroy a react root upon request", function() {
diff --git a/src/core/__tests__/ReactMultiChildText-test.js b/src/core/__tests__/ReactMultiChildText-test.js
index 85195a5176..a842d89e14 100644
--- a/src/core/__tests__/ReactMultiChildText-test.js
+++ b/src/core/__tests__/ReactMultiChildText-test.js
@@ -17,13 +17,14 @@
  * @emails react-core
  */
 
+/*jslint evil: true */
+
 "use strict";
 
 require('mock-modules');
 
 var React = require('React');
 var ReactTestUtils = require('ReactTestUtils');
-var ReactTextComponent = require('ReactTextComponent');
 
 var reactComponentExpect = require('reactComponentExpect');
 
@@ -141,7 +142,7 @@ describe('ReactMultiChildText', function() {
     assertMultiChild(d, 'hello', 'goodbye');
   });
 
-  it('should render zero string as text node  then switch to spans', function() {
+  it('should render zero string as text node then switch to spans', function() {
     var d = renderSingleTextChild('0');
     // false should act exactly as a null child
     assertNodeText(d, '0');
@@ -149,7 +150,7 @@ describe('ReactMultiChildText', function() {
     assertMultiChild(d, 'hello', 'goodbye');
   });
 
-  it('should render zero number as text node  then switch to spans', function() {
+  it('should render zero number as text node then switch to spans', function() {
     var d = renderSingleTextChild('0');
     // false should act exactly as a null child
     assertNodeText(d, 0);
diff --git a/src/core/__tests__/ReactProps-test.js b/src/core/__tests__/ReactProps-test.js
index 82cb58ebee..df9080ae3e 100644
--- a/src/core/__tests__/ReactProps-test.js
+++ b/src/core/__tests__/ReactProps-test.js
@@ -26,7 +26,7 @@ function typeCheck(declaration, value) {
   if (arguments.length > 1) {
     props.testProp = value;
   }
-  return declaration.bind(this, props, 'testProp', 'testComponent');
+  return declaration.bind(null, props, 'testProp', 'testComponent');
 }
 
 describe('Primitive Types', function() {
diff --git a/src/dom/DOMChildrenOperations.js b/src/dom/DOMChildrenOperations.js
index f1fd2fc85f..ce0f762a39 100644
--- a/src/dom/DOMChildrenOperations.js
+++ b/src/dom/DOMChildrenOperations.js
@@ -16,6 +16,9 @@
  * @providesModule DOMChildrenOperations
  */
 
+// Empty blocks improve readability so disable that warning
+// jshint -W035
+
 "use strict";
 
 var Danger = require('Danger');
diff --git a/src/dom/Danger.js b/src/dom/Danger.js
index 0117e2ef5e..1181739679 100644
--- a/src/dom/Danger.js
+++ b/src/dom/Danger.js
@@ -16,6 +16,8 @@
  * @providesModule Danger
  */
 
+/*jslint evil: true */
+
 "use strict";
 
 var ExecutionEnvironment = require('ExecutionEnvironment');
diff --git a/src/dom/__tests__/CSSPropertyOperations-test.js b/src/dom/__tests__/CSSPropertyOperations-test.js
index 3918d801af..2164c38e9f 100644
--- a/src/dom/__tests__/CSSPropertyOperations-test.js
+++ b/src/dom/__tests__/CSSPropertyOperations-test.js
@@ -17,6 +17,8 @@
  * @emails react-core
  */
 
+/*jslint evil: true */
+
 "use strict";
 
 var React = require('React');
diff --git a/src/dom/getEventTarget.js b/src/dom/getEventTarget.js
index 9529e3932f..7cb4ce3eb7 100644
--- a/src/dom/getEventTarget.js
+++ b/src/dom/getEventTarget.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var ExecutionEnvironment = require('ExecutionEnvironment');
 
 /**
diff --git a/src/environment/__tests__/ReactServerRendering-test.js b/src/environment/__tests__/ReactServerRendering-test.js
index 779730a68f..ebbad6b4b0 100644
--- a/src/environment/__tests__/ReactServerRendering-test.js
+++ b/src/environment/__tests__/ReactServerRendering-test.js
@@ -17,6 +17,8 @@
  * @emails react-core
  */
 
+/*jslint evil: true */
+
 "use strict";
 
 require('mock-modules')
@@ -147,7 +149,7 @@ describe('ReactServerRendering', function() {
         return (
           <span ref="span" onClick={this.click}>Name: {this.props.name}</span>
         );
-      },
+      }
     });
 
     var element = document.createElement('div');
diff --git a/src/event/synthetic/SyntheticEvent.js b/src/event/synthetic/SyntheticEvent.js
index c72275f679..366da3cbc6 100644
--- a/src/event/synthetic/SyntheticEvent.js
+++ b/src/event/synthetic/SyntheticEvent.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var PooledClass = require('PooledClass');
 
 var emptyFunction = require('emptyFunction');
diff --git a/src/event/synthetic/SyntheticFocusEvent.js b/src/event/synthetic/SyntheticFocusEvent.js
index 8ba8e73c5c..a90ba3f79a 100644
--- a/src/event/synthetic/SyntheticFocusEvent.js
+++ b/src/event/synthetic/SyntheticFocusEvent.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var SyntheticUIEvent = require('SyntheticUIEvent');
 
 /**
diff --git a/src/event/synthetic/SyntheticKeyboardEvent.js b/src/event/synthetic/SyntheticKeyboardEvent.js
index 64448c91f9..6e6b078282 100644
--- a/src/event/synthetic/SyntheticKeyboardEvent.js
+++ b/src/event/synthetic/SyntheticKeyboardEvent.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var SyntheticUIEvent = require('SyntheticUIEvent');
 
 /**
diff --git a/src/event/synthetic/SyntheticMouseEvent.js b/src/event/synthetic/SyntheticMouseEvent.js
index fa3fed1c23..6272fbb83a 100644
--- a/src/event/synthetic/SyntheticMouseEvent.js
+++ b/src/event/synthetic/SyntheticMouseEvent.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var BrowserEnv = require('BrowserEnv');
 var SyntheticUIEvent = require('SyntheticUIEvent');
 
diff --git a/src/event/synthetic/SyntheticMutationEvent.js b/src/event/synthetic/SyntheticMutationEvent.js
index 84fcbf187b..55ae1baa35 100644
--- a/src/event/synthetic/SyntheticMutationEvent.js
+++ b/src/event/synthetic/SyntheticMutationEvent.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var SyntheticEvent = require('SyntheticEvent');
 
 /**
diff --git a/src/event/synthetic/SyntheticTouchEvent.js b/src/event/synthetic/SyntheticTouchEvent.js
index ccc4fe89d1..304e592608 100644
--- a/src/event/synthetic/SyntheticTouchEvent.js
+++ b/src/event/synthetic/SyntheticTouchEvent.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var SyntheticUIEvent = require('SyntheticUIEvent');
 
 /**
diff --git a/src/event/synthetic/SyntheticUIEvent.js b/src/event/synthetic/SyntheticUIEvent.js
index 314d9d81b1..4e2b0d5964 100644
--- a/src/event/synthetic/SyntheticUIEvent.js
+++ b/src/event/synthetic/SyntheticUIEvent.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var SyntheticEvent = require('SyntheticEvent');
 
 /**
diff --git a/src/event/synthetic/SyntheticWheelEvent.js b/src/event/synthetic/SyntheticWheelEvent.js
index 857c8eaa9f..bab71dd4ba 100644
--- a/src/event/synthetic/SyntheticWheelEvent.js
+++ b/src/event/synthetic/SyntheticWheelEvent.js
@@ -17,6 +17,8 @@
  * @typechecks
  */
 
+"use strict";
+
 var SyntheticMouseEvent = require('SyntheticMouseEvent');
 
 /**
diff --git a/src/eventPlugins/EnterLeaveEventPlugin.js b/src/eventPlugins/EnterLeaveEventPlugin.js
index e4967e91dd..c3fe3a8fe7 100644
--- a/src/eventPlugins/EnterLeaveEventPlugin.js
+++ b/src/eventPlugins/EnterLeaveEventPlugin.js
@@ -72,8 +72,9 @@ var EnterLeaveEventPlugin = {
     var from, to;
     if (topLevelType === topLevelTypes.topMouseOut) {
       from = topLevelTarget;
-      to = getFirstReactDOM(nativeEvent.relatedTarget || nativeEvent.toElement)
-        || ExecutionEnvironment.global;
+      to =
+        getFirstReactDOM(nativeEvent.relatedTarget || nativeEvent.toElement) ||
+        ExecutionEnvironment.global;
     } else {
       from = ExecutionEnvironment.global;
       to = topLevelTarget;
diff --git a/src/utils/__tests__/ImmutableObject-test.js b/src/utils/__tests__/ImmutableObject-test.js
index fbcda924ae..3b9bae72cb 100644
--- a/src/utils/__tests__/ImmutableObject-test.js
+++ b/src/utils/__tests__/ImmutableObject-test.js
@@ -23,9 +23,6 @@ require('mock-modules')
 
 var ImmutableObject;
 
-var expectSeriallyEqual = function(one, two) {
-};
-
 /**
  * To perform performance testing of using `ImmutableObject` vs. not using
  * `ImmutableObject`, such testing must be done with __DEV__ set to false.
@@ -270,7 +267,7 @@ describe('ImmutableObject', function() {
     });
     expect(afterIO).toBeSeriallyEqualTo({
       a: {b: {}, c: 'C', d: 'd', e: {f: 'F', g: 'G'}, h: 'H'}
-    })
+    });
     expect(afterIO).not.toBe(beforeIO);
     expect(afterIO.a).not.toBe(beforeIO.a);
     expect(afterIO.a.e).not.toBe(beforeIO.a.e);
diff --git a/src/utils/mergeDeepInto.js b/src/utils/mergeDeepInto.js
index daa637624d..36131bb320 100644
--- a/src/utils/mergeDeepInto.js
+++ b/src/utils/mergeDeepInto.js
@@ -16,6 +16,9 @@
  * @providesModule mergeDeepInto
  */
 
+// Empty blocks improve readability so disable that warning
+// jshint -W035
+
 "use strict";
 
 var keyMirror = require('keyMirror');