Expose findDOMNode on internals

Exposes `findDOMNode` on internals and updates tests to read from internals

Author: gnoff

packages/react-dom/index.experimental.js

@@ -12,7 +12,6 @@ export {
   createPortal,
   createRoot,
   hydrateRoot,
-  findDOMNode,
   flushSync,
   hydrate,
   render,

packages/react-dom/index.js

@@ -14,7 +14,6 @@ export {
   createPortal,
   createRoot,
   hydrateRoot,
-  findDOMNode,
   flushSync,
   hydrate,
   render,

packages/react-dom/index.stable.js

@@ -12,7 +12,6 @@ export {
   createPortal,
   createRoot,
   hydrateRoot,
-  findDOMNode,
   flushSync,
   hydrate,
   render,

packages/react-dom/src/ReactDOMSharedInternals.js

@@ -7,6 +7,7 @@
  * @flow
  */
 
+import type {FindDOMNodeType} from './client/ReactDOMLegacy.js';
 import type {HostDispatcher} from './shared/ReactDOMTypes';
 
 type InternalsType = {
@@ -15,6 +16,7 @@ type InternalsType = {
   Dispatcher: {
     current: null | HostDispatcher,
   },
+  findDOMNode: null | FindDOMNodeType,
 };
 
 const Internals: InternalsType = ({
@@ -23,6 +25,7 @@ const Internals: InternalsType = ({
   Dispatcher: {
     current: null,
   },
+  findDOMNode: null,
 }: any);
 
 export default Internals;

packages/react-dom/src/__tests__/ReactComponentLifeCycle-test.js

@@ -16,6 +16,7 @@ let ReactDOM;
 let ReactDOMClient;
 let ReactTestUtils;
 let PropTypes;
+let findDOMNode;
 
 const clone = function (o) {
   return JSON.parse(JSON.stringify(o));
@@ -94,6 +95,8 @@ describe('ReactComponentLifeCycle', () => {
 
     React = require('react');
     ReactDOM = require('react-dom');
+    findDOMNode =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode;
     ReactDOMClient = require('react-dom/client');
     ReactTestUtils = require('react-dom/test-utils');
     PropTypes = require('prop-types');
@@ -376,7 +379,7 @@ describe('ReactComponentLifeCycle', () => {
       }
       render() {
         if (this.state.isMounted) {
-          expect(ReactDOM.findDOMNode(this).tagName).toBe('DIV');
+          expect(findDOMNode(this).tagName).toBe('DIV');
         }
         return <div />;
       }

packages/react-dom/src/__tests__/ReactDOM-test.js

@@ -11,6 +11,7 @@
 
 let React;
 let ReactDOM;
+let findDOMNode;
 let ReactDOMClient;
 let ReactDOMServer;
 let ReactTestUtils;
@@ -21,6 +22,8 @@ describe('ReactDOM', () => {
   beforeEach(() => {
     React = require('react');
     ReactDOM = require('react-dom');
+    findDOMNode =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode;
     ReactDOMClient = require('react-dom/client');
     ReactDOMServer = require('react-dom/server');
     ReactTestUtils = require('react-dom/test-utils');
@@ -420,7 +423,7 @@ describe('ReactDOM', () => {
 
     const instance = ReactTestUtils.renderIntoDocument(<Component />);
     const App = () => {
-      ReactDOM.findDOMNode(instance);
+      findDOMNode(instance);
       return <div />;
     };
 

packages/react-dom/src/__tests__/ReactDOMComponent-test.js

@@ -2035,7 +2035,11 @@ describe('ReactDOMComponent', () => {
 
         componentWillUnmount() {
           // Should not throw
-          expect(ReactDOM.findDOMNode(this).nodeName).toBe('SPAN');
+          expect(
+            ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+              this,
+            ).nodeName,
+          ).toBe('SPAN');
         }
       }
 

packages/react-dom/src/__tests__/ReactDOMEventListener-test.js

@@ -110,10 +110,18 @@ describe('ReactDOMEventListener', () => {
             this.setState({clicked: true});
           };
           componentDidMount() {
-            expect(ReactDOM.findDOMNode(this)).toBe(container.firstChild);
+            expect(
+              ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+                this,
+              ),
+            ).toBe(container.firstChild);
           }
           componentDidUpdate() {
-            expect(ReactDOM.findDOMNode(this)).toBe(container.firstChild);
+            expect(
+              ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+                this,
+              ),
+            ).toBe(container.firstChild);
           }
           render() {
             if (this.state.clicked) {

packages/react-dom/src/__tests__/ReactDOMLegacyFiber-test.js

@@ -103,7 +103,10 @@ describe('ReactDOMLegacyFiber', () => {
       container,
     );
 
-    const textNode = ReactDOM.findDOMNode(instance);
+    const textNode =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+        instance,
+      );
     expect(textNode).toBe(container.firstChild);
     expect(textNode.nodeType).toBe(3);
     expect(textNode.nodeValue).toBe('foo');
@@ -121,7 +124,10 @@ describe('ReactDOMLegacyFiber', () => {
 
     expect(container.childNodes.length).toBe(2);
 
-    const firstNode = ReactDOM.findDOMNode(instance);
+    const firstNode =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+        instance,
+      );
     expect(firstNode).toBe(container.firstChild);
     expect(firstNode.tagName).toBe('DIV');
   });
@@ -149,7 +155,10 @@ describe('ReactDOMLegacyFiber', () => {
 
     expect(container.childNodes.length).toBe(2);
 
-    const firstNode = ReactDOM.findDOMNode(instance);
+    const firstNode =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+        instance,
+      );
     expect(firstNode).toBe(container.firstChild);
     expect(firstNode.tagName).toBe('DIV');
   });
@@ -172,7 +181,10 @@ describe('ReactDOMLegacyFiber', () => {
 
     expect(container.childNodes.length).toBe(2);
 
-    const firstNode = ReactDOM.findDOMNode(instance);
+    const firstNode =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+        instance,
+      );
     expect(firstNode).toBe(container.firstChild);
     expect(firstNode.tagName).toBe('DIV');
   });
@@ -849,13 +861,19 @@ describe('ReactDOMLegacyFiber', () => {
     }
 
     const myNodeA = ReactDOM.render(<MyNode />, container);
-    const a = ReactDOM.findDOMNode(myNodeA);
+    const a =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+        myNodeA,
+      );
     expect(a.tagName).toBe('DIV');
 
     const myNodeB = ReactDOM.render(<MyNode flag={true} />, container);
     expect(myNodeA === myNodeB).toBe(true);
 
-    const b = ReactDOM.findDOMNode(myNodeB);
+    const b =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode(
+        myNodeB,
+      );
     expect(b.tagName).toBe('SPAN');
   });
 

packages/react-dom/src/__tests__/ReactDOMSuspensePlaceholder-test.js

@@ -11,6 +11,7 @@
 
 let React;
 let ReactDOM;
+let findDOMNode;
 let ReactDOMClient;
 let Suspense;
 let Scheduler;
@@ -23,6 +24,8 @@ describe('ReactDOMSuspensePlaceholder', () => {
   beforeEach(() => {
     React = require('react');
     ReactDOM = require('react-dom');
+    findDOMNode =
+      ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.findDOMNode;
     ReactDOMClient = require('react-dom/client');
     Scheduler = require('scheduler');
     act = require('internal-test-utils').act;
@@ -228,11 +231,11 @@ describe('ReactDOMSuspensePlaceholder', () => {
     class Child extends React.Component {
       componentDidMount() {
         log.push('cDM ' + this.props.id);
-        ReactDOM.findDOMNode(this);
+        findDOMNode(this);
       }
       componentDidUpdate() {
         log.push('cDU ' + this.props.id);
-        ReactDOM.findDOMNode(this);
+        findDOMNode(this);
       }
       render() {
         return 'child';
@@ -287,12 +290,12 @@ describe('ReactDOMSuspensePlaceholder', () => {
     class Child extends React.Component {
       componentDidMount() {
         log.push('cDM');
-        ReactDOM.findDOMNode(this);
+        findDOMNode(this);
       }
 
       componentDidUpdate() {
         log.push('cDU');
-        ReactDOM.findDOMNode(this);
+        findDOMNode(this);
       }
 
       render() {