Calling `ReactDefaultPerf.printWasted()` results in:

```
Uncaught TypeError: Cannot read property 'forEach' of undefined
writes.(anonymous function).forEach @ ReactDefaultPerfAnalysis.js:195
Object.keys.forEach @ ReactDefaultPerfAnalysis.js:192
getUnchangedComponents @ ReactDefaultPerfAnalysis.js:191
getInclusiveSummary @ ReactDefaultPerfAnalysis.js:139
ReactDefaultPerf.getMeasurementsSummaryMap @ ReactDefaultPerf.js:118
ReactDefaultPerf.printWasted @ ReactDefaultPerf.js:133
```

(this is on a page internally at Facebook so I assume it's a fairly recent React version)

if (measurement.inclusive[id]) {
        candidates[inclusiveKey].time += measurement.inclusive[id];
      }
      if (measurement.counts[id]) {
        candidates[inclusiveKey].count += measurement.counts[id];
      }
    }
  }
  
  var arr = [];
  for (inclusiveKey in candidates) {
    if (candidates[inclusiveKey].time >= DONT_CARE_THRESHOLD) {
      arr.push(candidates[inclusiveKey]);
    }
  }
  arr.sort(function(a, b) {
    return b.time - a.time;
  });
  return arr;
}
function getUnchangedComponents(measurement) {
  
  
  
  var cleanComponents = {};
  var writes = measurement.writes;
  var dirtyComposites = {};
  Object.keys(writes).forEach(function(id) {
    writes[id].forEach(function(write) {