Function commitRootCallbacks

packages/react-reconciler/src/ReactFiberCommitEffects.js:591–619

(finishedWork: Fiber)

}

export function commitRootCallbacks(finishedWork: Fiber) {
  // TODO: I think this is now always non-null by the time it reaches the
  // commit phase. Consider removing the type check.
  const updateQueue: UpdateQueue<mixed> | null =
    (finishedWork.updateQueue: any);
  if (updateQueue !== null) {
    let instance = null;
    if (finishedWork.child !== null) {
      switch (finishedWork.child.tag) {
        case HostSingleton:
        case HostComponent:
          instance = getPublicInstance(finishedWork.child.stateNode);
          break;
        case ClassComponent:
          instance = finishedWork.child.stateNode;
          break;
      }
    }
    try {
      if (__DEV__) {
        runWithFiberInDEV(finishedWork, commitCallbacks, updateQueue, instance);
      } else {
        commitCallbacks(updateQueue, instance);
      }
    } catch (error) {
      captureCommitPhaseError(finishedWork, finishedWork.return, error);
    }
  }
}

let didWarnAboutUndefinedSnapshotBeforeUpdate: Set<mixed> | null = null;
if (__DEV__) {