[lint] Fix majority of issues eslint found

Author: zpao

src/addons/ReactRAFBatchingStrategy.js

@@ -10,6 +10,8 @@
  * @typechecks static-only
  */
 
+/* global requestAnimationFrame:true */
+
 'use strict';
 
 var ExecutionEnvironment = require('ExecutionEnvironment');

src/addons/transitions/ReactCSSTransitionGroupChild.js

@@ -64,7 +64,9 @@ var ReactCSSTransitionGroupChild = React.createClass({
 
       // Usually this optional callback is used for informing an owner of
       // a leave animation and telling it to remove the child.
-      finishCallback && finishCallback();
+      if (finishCallback) {
+        finishCallback();
+      }
     };
 
     ReactTransitionEvents.addEndEventListener(node, endListener);

src/browser/__tests__/findDOMNode-test.js

@@ -48,4 +48,3 @@ describe('findDOMNode', function() {
   });
 
 });
-

src/browser/eventPlugins/BeforeInputEventPlugin.js

@@ -490,7 +490,7 @@ var BeforeInputEventPlugin = {
         topLevelTarget,
         topLevelTargetID,
         nativeEvent
-      ),
+      )
     ];
   }
 };

src/browser/eventPlugins/FallbackCompositionState.js

@@ -58,19 +58,21 @@ assign(FallbackCompositionState.prototype, {
       return this._fallbackText;
     }
 
-    var endValue = this.getText();
+    var start;
     var startValue = this._startText;
     var startLength = startValue.length;
+    var end;
+    var endValue = this.getText();
     var endLength = endValue.length;
 
-    for (var start = 0; start < startLength; start++) {
+    for (start = 0; start < startLength; start++) {
       if (startValue[start] !== endValue[start]) {
         break;
       }
     }
 
     var minEnd = startLength - start;
-    for (var end = 1; end <= minEnd; end++) {
+    for (end = 1; end <= minEnd; end++) {
       if (startValue[startLength - end] !== endValue[endLength - end]) {
         break;
       }

src/browser/eventPlugins/SelectEventPlugin.js

@@ -94,7 +94,7 @@ function constructSelectEvent(nativeEvent) {
   // won't dispatch.
   if (mouseDown ||
       activeElement == null ||
-      activeElement != getActiveElement()) {
+      activeElement !== getActiveElement()) {
     return;
   }
 

src/browser/findDOMNode.js

@@ -35,9 +35,9 @@ function findDOMNode(componentOrElement) {
   }
   invariant(
     componentOrElement.render == null ||
-    typeof(componentOrElement.render) !== 'function',
-    'Component (with keys: %s) contains `render` method '
-    +'but is not mounted in the DOM',
+    typeof componentOrElement.render !== 'function',
+    'Component (with keys: %s) contains `render` method ' +
+    'but is not mounted in the DOM',
     Object.keys(componentOrElement)
   );
   invariant(

src/browser/syntheticEvents/SyntheticClipboardEvent.js

@@ -41,4 +41,3 @@ function SyntheticClipboardEvent(dispatchConfig, dispatchMarker, nativeEvent) {
 SyntheticEvent.augmentClass(SyntheticClipboardEvent, ClipboardEventInterface);
 
 module.exports = SyntheticClipboardEvent;
-

src/browser/syntheticEvents/SyntheticCompositionEvent.js

@@ -41,4 +41,3 @@ SyntheticEvent.augmentClass(
 );
 
 module.exports = SyntheticCompositionEvent;
-

src/browser/syntheticEvents/SyntheticEvent.js

@@ -88,13 +88,21 @@ assign(SyntheticEvent.prototype, {
   preventDefault: function() {
     this.defaultPrevented = true;
     var event = this.nativeEvent;
-    event.preventDefault ? event.preventDefault() : event.returnValue = false;
+    if (event.preventDefault) {
+      event.preventDefault();
+    } else {
+      event.returnValue = false;
+    }
     this.isDefaultPrevented = emptyFunction.thatReturnsTrue;
   },
 
   stopPropagation: function() {
     var event = this.nativeEvent;
-    event.stopPropagation ? event.stopPropagation() : event.cancelBubble = true;
+    if (event.stopPropagation) {
+      event.stopPropagation();
+    } else {
+      event.cancelBubble = true;
+    }
     this.isPropagationStopped = emptyFunction.thatReturnsTrue;
   },