In this [issue](https://github.com/facebook/react/issues/23373), when you navigate to [this app](https://next-rsc-notes.vercel.app/note/1646289027680) and inspect the sidebar in the components tab, you will get this error:

![image](https://user-images.githubusercontent.com/2735514/158241727-64eba8f9-5ac2-4aa7-bffa-ff9b3174a261.png)

 This is a user error. One of the components in the user's app thrown. However, the UI for this is confusing, because it seems like it's a DevTools error. We've gotten a lot of bug reports like this, and it would be good to differentiate between DevTools bugs and bugs in the app. For this task:

- [ ] Build the React DevTools extension locally (instructions [here](https://github.com/facebook/react/tree/main/packages/react-devtools-extensions)) and reproduce the error
- [ ] Figure out a way to have the front end be able to differentiate whether the error is a error within DevTools or within the user's app
- [ ] Design/implement a better UI to help app developers distinguish between these two cases
const pendingStringTable: Map<string, StringTableEntry> = new Map();
  let pendingStringTableLength: number = 0;
  let pendingUnmountedRootID: number | null = null;
  function pushOperation(op: number): void {
    if (__DEV__) {
      if (!Number.isInteger(op)) {
        console.error(
          'pushOperation() was called but the value is not an integer.',
          op,
        );
      }
    }
    pendingOperations.push(op);
  }
  function shouldBailoutWithPendingOperations() {
    if (isProfiling) {
      if (
        currentCommitProfilingMetadata != null &&
        currentCommitProfilingMetadata.durations.length > 0
      ) {
        return false;
      }
    }
    return (
      pendingOperations.length === 0 &&
      pendingRealUnmountedIDs.length === 0 &&
      pendingSimulatedUnmountedIDs.length === 0 &&
      pendingUnmountedRootID === null
    );
  }