Merge pull request #6516 from gaearon/ignore-dom-writes-outside-batch

Ignore DOM writes outside the batch in ReactPerf
(cherry picked from commit 6a93137)

src/test/ReactDefaultPerfAnalysis.js

@@ -175,12 +175,13 @@ function getUnchangedComponents(measurement) {
   // the amount of time it took to render the entire subtree.
   var cleanComponents = {};
   var writes = measurement.writes;
+  var hierarchy = measurement.hierarchy;
   var dirtyComposites = {};
   Object.keys(writes).forEach(function(id) {
     writes[id].forEach(function(write) {
       // Root mounting (innerHTML set) is recorded with an ID of ''
-      if (id !== '') {
-        measurement.hierarchy[id].forEach((c) => dirtyComposites[c] = true);
+      if (id !== '' && hierarchy.hasOwnProperty(id)) {
+        hierarchy[id].forEach((c) => dirtyComposites[c] = true);
       }
     });
   });

src/test/__tests__/ReactDefaultPerf-test.js

@@ -239,6 +239,18 @@ describe('ReactDefaultPerf', function() {
     expect(summary).toEqual([]);
   });
 
+  it('should not fail on input change events', function() {
+    var container = document.createElement('div');
+    var onChange = () => {};
+    var input = ReactDOM.render(
+      <input checked={true} onChange={onChange} />,
+      container
+    );
+    expectNoWaste(() => {
+      ReactTestUtils.Simulate.change(input);
+    });
+  });
+
   it('should print a table after calling printOperations', function() {
     var container = document.createElement('div');
     var measurements = measure(() => {