diff --git a/src/renderers/dom/client/syntheticEvents/SyntheticEvent.js b/src/renderers/dom/client/syntheticEvents/SyntheticEvent.js
index 967c52a494a4..bf344599530b 100644
--- a/src/renderers/dom/client/syntheticEvents/SyntheticEvent.js
+++ b/src/renderers/dom/client/syntheticEvents/SyntheticEvent.js
@@ -173,9 +173,21 @@ Object.assign(SyntheticEvent.prototype, {
       this[shouldBeReleasedProperties[i]] = null;
     }
     if (__DEV__) {
-      Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
-      Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', emptyFunction));
-      Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', emptyFunction));
+      Object.defineProperty(
+        this,
+        'nativeEvent',
+        getPooledWarningPropertyDefinition('nativeEvent', null)
+      );
+      Object.defineProperty(
+        this,
+        'preventDefault',
+        getPooledWarningPropertyDefinition('preventDefault', emptyFunction)
+      );
+      Object.defineProperty(
+        this,
+        'stopPropagation',
+        getPooledWarningPropertyDefinition('stopPropagation', emptyFunction)
+      );
     }
   },
 
diff --git a/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js b/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
index 6c20afbd2fa7..c7ba1540de1d 100644
--- a/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
+++ b/src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
@@ -225,7 +225,7 @@ describe('ReactDOMComponent', function() {
       });
 
       ReactTestUtils.renderIntoDocument(<Component />);
-      expect(console.error.calls.length).toBe(0);
+      expect(console.error.calls.count()).toBe(0);
     });
 
     it('should warn nicely about NaN in style', function() {
diff --git a/src/renderers/native/ReactNativeAttributePayload.js b/src/renderers/native/ReactNativeAttributePayload.js
index 4aaa8064494f..54912f354682 100644
--- a/src/renderers/native/ReactNativeAttributePayload.js
+++ b/src/renderers/native/ReactNativeAttributePayload.js
@@ -394,7 +394,9 @@ function diffProperties(
       // default: fallthrough case when nested properties are defined
       removedKeys = null;
       removedKeyCount = 0;
-      // $FlowFixMe - We think that attributeConfig is not CustomAttributeConfiguration at this point so we assume it must be AttributeConfiguration.
+      // $FlowFixMe - We think that attributeConfig is not
+      // CustomAttributeConfiguration at this point so we assume
+      // it must be AttributeConfiguration.
       updatePayload = diffNestedProperty(
         updatePayload,
         prevProp,
diff --git a/src/renderers/shared/fiber/isomorphic/ReactCoroutine.js b/src/renderers/shared/fiber/isomorphic/ReactCoroutine.js
index a03934ea56fc..36728c459621 100644
--- a/src/renderers/shared/fiber/isomorphic/ReactCoroutine.js
+++ b/src/renderers/shared/fiber/isomorphic/ReactCoroutine.js
@@ -42,7 +42,12 @@ export type ReactYield = {
   continuation: mixed
 };
 
-exports.createCoroutine = function<T>(children : mixed, handler : CoroutineHandler<T>, props : T, key : ?string = null) : ReactCoroutine {
+exports.createCoroutine = function<T>(
+  children : mixed,
+  handler : CoroutineHandler<T>,
+  props : T,
+  key : ?string = null
+) : ReactCoroutine {
   var coroutine = {
     // This tag allow us to uniquely identify this as a React Coroutine
     $$typeof: REACT_COROUTINE_TYPE,