Move type DOMContainer to HostConfig (#18112)

Exports from ReactDOM represents React's public API. This include types
exported by React. At some point we'll start building Flow types from
these files.

The duplicate name between DOMContainer and Container seems confusing too
since it was used in the same files even though they're the same.

packages/react-dom/src/client/ReactDOM.js

@@ -7,8 +7,8 @@
  * @flow
  */
 
-import type {RootType} from './ReactDOMRoot';
 import type {ReactNodeList} from 'shared/ReactTypes';
+import type {Container} from './ReactDOMHostConfig';
 
 import '../shared/checkReact';
 import './ReactDOMClientInjection';
@@ -116,13 +116,9 @@ setBatchingImplementation(
   batchedEventUpdates,
 );
 
-export type DOMContainer =
-  | (Element & {_reactRootContainer: ?RootType, ...})
-  | (Document & {_reactRootContainer: ?RootType, ...});
-
 function createPortal(
   children: ReactNodeList,
-  container: DOMContainer,
+  container: Container,
   key: ?string = null,
 ) {
   invariant(

packages/react-dom/src/client/ReactDOMHostConfig.js

@@ -7,6 +7,8 @@
  * @flow
  */
 
+import type {RootType} from './ReactDOMRoot';
+
 import {
   precacheFiberNode,
   updateFiberProps,
@@ -45,7 +47,6 @@ import {
 } from '../shared/HTMLNodeType';
 import dangerousStyleValue from '../shared/dangerousStyleValue';
 
-import type {DOMContainer} from './ReactDOM';
 import type {
   ReactDOMEventResponder,
   ReactDOMEventResponderInstance,
@@ -99,7 +100,9 @@ export type EventTargetChildElement = {
   },
   ...
 };
-export type Container = DOMContainer;
+export type Container =
+  | (Element & {_reactRootContainer: ?RootType, ...})
+  | (Document & {_reactRootContainer: ?RootType, ...});
 export type Instance = Element;
 export type TextInstance = Text;
 export type SuspenseInstance = Comment & {_reactRetry?: () => void, ...};
@@ -419,7 +422,7 @@ export function appendChild(
 }
 
 export function appendChildToContainer(
-  container: DOMContainer,
+  container: Container,
   child: Instance | TextInstance,
 ): void {
   let parentNode;

packages/react-dom/src/client/ReactDOMLegacy.js

@@ -7,7 +7,7 @@
  * @flow
  */
 
-import type {DOMContainer} from './ReactDOM';
+import type {Container} from './ReactDOMHostConfig';
 import type {RootType} from './ReactDOMRoot';
 import type {ReactNodeList} from 'shared/ReactTypes';
 
@@ -43,7 +43,7 @@ let topLevelUpdateWarnings;
 let warnedAboutHydrateAPI = false;
 
 if (__DEV__) {
-  topLevelUpdateWarnings = (container: DOMContainer) => {
+  topLevelUpdateWarnings = (container: Container) => {
     if (container._reactRootContainer && container.nodeType !== COMMENT_NODE) {
       const hostInstance = findHostInstanceWithNoPortals(
         container._reactRootContainer._internalRoot.current,
@@ -111,7 +111,7 @@ function shouldHydrateDueToLegacyHeuristic(container) {
 }
 
 function legacyCreateRootFromDOMContainer(
-  container: DOMContainer,
+  container: Container,
   forceHydrate: boolean,
 ): RootType {
   const shouldHydrate =
@@ -175,7 +175,7 @@ function warnOnInvalidCallback(callback: mixed, callerName: string): void {
 function legacyRenderSubtreeIntoContainer(
   parentComponent: ?React$Component<any, any>,
   children: ReactNodeList,
-  container: DOMContainer,
+  container: Container,
   forceHydrate: boolean,
   callback: ?Function,
 ) {
@@ -255,7 +255,7 @@ export function findDOMNode(
 
 export function hydrate(
   element: React$Node,
-  container: DOMContainer,
+  container: Container,
   callback: ?Function,
 ) {
   invariant(
@@ -286,7 +286,7 @@ export function hydrate(
 
 export function render(
   element: React$Element<any>,
-  container: DOMContainer,
+  container: Container,
   callback: ?Function,
 ) {
   invariant(
@@ -317,7 +317,7 @@ export function render(
 export function unstable_renderSubtreeIntoContainer(
   parentComponent: React$Component<any, any>,
   element: React$Element<any>,
-  containerNode: DOMContainer,
+  containerNode: Container,
   callback: ?Function,
 ) {
   invariant(
@@ -337,7 +337,7 @@ export function unstable_renderSubtreeIntoContainer(
   );
 }
 
-export function unmountComponentAtNode(container: DOMContainer) {
+export function unmountComponentAtNode(container: Container) {
   invariant(
     isValidContainer(container),
     'unmountComponentAtNode(...): Target container is not a DOM element.',

packages/react-dom/src/client/ReactDOMRoot.js

@@ -7,7 +7,7 @@
  * @flow
  */
 
-import type {DOMContainer} from './ReactDOM';
+import type {Container} from './ReactDOMHostConfig';
 import type {RootTag} from 'shared/ReactRootTags';
 import type {ReactNodeList} from 'shared/ReactTypes';
 // TODO: This type is shared between the reconciler and ReactDOM, but will
@@ -49,12 +49,12 @@ import {createContainer, updateContainer} from 'react-reconciler/inline.dom';
 import invariant from 'shared/invariant';
 import {BlockingRoot, ConcurrentRoot, LegacyRoot} from 'shared/ReactRootTags';
 
-function ReactDOMRoot(container: DOMContainer, options: void | RootOptions) {
+function ReactDOMRoot(container: Container, options: void | RootOptions) {
   this._internalRoot = createRootImpl(container, ConcurrentRoot, options);
 }
 
 function ReactDOMBlockingRoot(
-  container: DOMContainer,
+  container: Container,
   tag: RootTag,
   options: void | RootOptions,
 ) {
@@ -108,7 +108,7 @@ ReactDOMRoot.prototype.unmount = ReactDOMBlockingRoot.prototype.unmount = functi
 };
 
 function createRootImpl(
-  container: DOMContainer,
+  container: Container,
   tag: RootTag,
   options: void | RootOptions,
 ) {
@@ -129,7 +129,7 @@ function createRootImpl(
 }
 
 export function createRoot(
-  container: DOMContainer,
+  container: Container,
   options?: RootOptions,
 ): RootType {
   invariant(
@@ -141,7 +141,7 @@ export function createRoot(
 }
 
 export function createBlockingRoot(
-  container: DOMContainer,
+  container: Container,
   options?: RootOptions,
 ): RootType {
   invariant(
@@ -153,7 +153,7 @@ export function createBlockingRoot(
 }
 
 export function createLegacyRoot(
-  container: DOMContainer,
+  container: Container,
   options?: RootOptions,
 ): RootType {
   return new ReactDOMBlockingRoot(container, LegacyRoot, options);

packages/react-dom/src/events/ReactDOMEventReplaying.js

@@ -12,7 +12,6 @@ import type {Container, SuspenseInstance} from '../client/ReactDOMHostConfig';
 import type {DOMTopLevelEventType} from 'legacy-events/TopLevelEventTypes';
 import type {EventSystemFlags} from 'legacy-events/EventSystemFlags';
 import type {FiberRoot} from 'react-reconciler/src/ReactFiberRoot';
-import type {DOMContainer} from '../client/ReactDOM';
 
 import {
   enableDeprecatedFlareAPI,
@@ -238,7 +237,7 @@ function trapReplayableEventForDocument(
 }
 
 export function eagerlyTrapReplayableEvents(
-  container: DOMContainer,
+  container: Container,
   document: Document,
 ) {
   const listenerMapForDoc = getListenerMapForElement(document);