https://codesandbox.io/s/elastic-mayer-rzz4h2?file=/package.json

This is supposed to `console.error` but it doesn't.

17 warns: https://codesandbox.io/s/admiring-minsky-sze07m?file=/src/App.js
pickArbitraryLane,
  includesNonIdleWork,
  includesOnlyRetries,
  includesOnlyNonUrgentLanes,
  includesBlockingLane,
  includesExpiredLane,
  getNextLanes,
  markStarvedLanesAsExpired,
  getLanesToRetrySynchronouslyOnError,
  getMostRecentEventTime,
  markRootUpdated,
  markRootSuspended as markRootSuspended_dontCallThisOneDirectly,
  markRootPinged,
  markRootEntangled,
  markRootFinished,
  getHighestPriorityLane,
  addFiberToLanesMap,
  movePendingFibersToMemoized,
  addTransitionToLanesMap,
  getTransitionsForLanes,
} from './ReactFiberLane.new';
import {
  DiscreteEventPriority,
  ContinuousEventPriority,
  DefaultEventPriority,
  IdleEventPriority,
  getCurrentUpdatePriority,
  setCurrentUpdatePriority,
  lowerEventPriority,
  lanesToEventPriority,