Move root tags to /constants

packages/react-noop-renderer/src/createReactNoop.js

@@ -21,8 +21,11 @@ import type {RootTag} from 'react-reconciler/src/ReactRootTags';
 
 import * as Scheduler from 'scheduler/unstable_mock';
 import {REACT_FRAGMENT_TYPE, REACT_ELEMENT_TYPE} from 'shared/ReactSymbols';
-import {ConcurrentRoot, LegacyRoot} from 'react-reconciler/src/ReactRootTags';
-import {DefaultEventPriority} from 'react-reconciler/constants';
+import {
+  DefaultEventPriority,
+  ConcurrentRoot,
+  LegacyRoot,
+} from 'react-reconciler/constants';
 
 import ReactSharedInternals from 'shared/ReactSharedInternals';
 import enqueueTask from 'shared/enqueueTask';

packages/react-reconciler/constants.js

@@ -9,4 +9,4 @@
 
 'use strict';
 
-export * from './src/ReactEventPriorities';
+export * from './src/ReactReconcilerConstants';

packages/react-reconciler/src/ReactReconcilerConstants.js

@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ */
+
+// These are semi-public constants exposed to any third-party renderers.
+// Only expose the minimal subset necessary to implement a host config.
+
+export {
+  DiscreteEventPriority,
+  ContinuousEventPriority,
+  DefaultEventPriority,
+} from './ReactEventPriorities';
+export {ConcurrentRoot, LegacyRoot} from './ReactRootTags';

scripts/rollup/modules.js

@@ -16,6 +16,7 @@ const importSideEffects = Object.freeze({
   'react-native/Libraries/ReactPrivate/ReactNativePrivateInterface': HAS_NO_SIDE_EFFECTS_ON_IMPORT,
   scheduler: HAS_NO_SIDE_EFFECTS_ON_IMPORT,
   'scheduler/tracing': HAS_NO_SIDE_EFFECTS_ON_IMPORT,
+  react: HAS_NO_SIDE_EFFECTS_ON_IMPORT,
   'react-dom/server': HAS_NO_SIDE_EFFECTS_ON_IMPORT,
   'react/jsx-dev-runtime': HAS_NO_SIDE_EFFECTS_ON_IMPORT,
   'react-fetch/node': HAS_NO_SIDE_EFFECTS_ON_IMPORT,