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
SimpleMemoComponent,
  Profiler,
} from './ReactWorkTags';
import {LegacyRoot} from './ReactRootTags';
import {
  NoFlags,
  Placement,
  Incomplete,
  StoreConsistency,
  HostEffectMask,
  Hydrating,
  ForceClientRender,
  BeforeMutationMask,
  MutationMask,
  LayoutMask,
  PassiveMask,
  MountPassiveDev,
  MountLayoutDev,
} from './ReactFiberFlags';
import {
  NoLanes,
  NoLane,
  SyncLane,
  NoTimestamp,
  claimNextTransitionLane,
  claimNextRetryLane,
  includesSomeLane,
  isSubsetOfLanes,
  mergeLanes,
  removeLanes,