Exclude react-dom/unstable_testing entry point from stable releases (#23258)

* Use consistent naming for unstable_testing entry point

* Exclude the testing build from non-experimental builds except at FB

* FB builds shouldn't contribute to whether we include the npm files

* Exclude exports fields if we delete the files entry

* Move test to no longer be internal so we can test against the build

* Update the bundle artifact names since they've now changed

* Gate import since it doesn't exist

packages/react-dom/npm/unstable_testing.js

@@ -32,7 +32,7 @@ if (process.env.NODE_ENV === 'production') {
   // DCE check should happen before ReactDOM bundle executes so that
   // DevTools can report bad minification during injection.
   checkDCE();
-  module.exports = require('./cjs/react-dom-testing.production.min.js');
+  module.exports = require('./cjs/react-dom-unstable_testing.production.min.js');
 } else {
-  module.exports = require('./cjs/react-dom-testing.development.js');
+  module.exports = require('./cjs/react-dom-unstable_testing.development.js');
 }

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

@@ -31,9 +31,10 @@ describe('ReactDOMTestSelectors', () => {
     jest.resetModules();
 
     React = require('react');
-
-    const ReactDOM = require('react-dom/testing');
     act = React.unstable_act;
+
+    if (__EXPERIMENTAL__ || global.__WWW__) {
+      const ReactDOM = require('react-dom/unstable_testing');
       createComponentSelector = ReactDOM.createComponentSelector;
       createHasPseudoClassSelector = ReactDOM.createHasPseudoClassSelector;
       createRoleSelector = ReactDOM.createRoleSelector;
@@ -46,6 +47,7 @@ describe('ReactDOMTestSelectors', () => {
         ReactDOM.getFindAllNodesFailureDescription;
       observeVisibleRects = ReactDOM.observeVisibleRects;
       render = ReactDOM.render;
+    }
 
     container = document.createElement('div');
     document.body.appendChild(container);

scripts/rollup/bundles.js

@@ -245,12 +245,13 @@ const bundles = [
     externals: ['react', 'react-dom'],
   },
 
-  // TODO: We don't use this bundle anymore
   /******* React DOM - www - Testing *******/
   {
     moduleType: RENDERER,
-    bundleTypes: [FB_WWW_DEV, FB_WWW_PROD, NODE_DEV, NODE_PROD],
-    entry: 'react-dom/testing',
+    bundleTypes: __EXPERIMENTAL__
+      ? [FB_WWW_DEV, FB_WWW_PROD, NODE_DEV, NODE_PROD]
+      : [FB_WWW_DEV, FB_WWW_PROD],
+    entry: 'react-dom/unstable_testing',
     global: 'ReactDOMTesting',
     minifyWithProdErrorCodes: true,
     wrapWithModuleBoundaries: false,

scripts/rollup/forks.js

@@ -129,7 +129,7 @@ const forks = Object.freeze({
             return 'shared/forks/ReactFeatureFlags.test-renderer.www.js';
         }
         return 'shared/forks/ReactFeatureFlags.test-renderer.js';
-      case 'react-dom/testing':
+      case 'react-dom/unstable_testing':
         switch (bundleType) {
           case FB_WWW_DEV:
           case FB_WWW_PROD:

scripts/rollup/packaging.js

@@ -139,7 +139,11 @@ let entryPointsToHasBundle = new Map();
 for (const bundle of Bundles.bundles) {
   let hasBundle = entryPointsToHasBundle.get(bundle.entry);
   if (!hasBundle) {
-    entryPointsToHasBundle.set(bundle.entry, bundle.bundleTypes.length > 0);
+    const hasNonFBBundleTypes = bundle.bundleTypes.some(
+      type =>
+        type !== FB_WWW_DEV && type !== FB_WWW_PROD && type !== FB_WWW_PROFILING
+    );
+    entryPointsToHasBundle.set(bundle.entry, hasNonFBBundleTypes);
   }
 }
 
@@ -176,6 +180,15 @@ function filterOutEntrypoints(name) {
       i--;
       unlinkSync(`build/node_modules/${name}/${filename}`);
       changed = true;
+      // Remove it from the exports field too if it exists.
+      const exportsJSON = packageJSON.exports;
+      if (exportsJSON) {
+        if (filename === 'index.js') {
+          delete exportsJSON['.'];
+        } else {
+          delete exportsJSON['./' + filename.replace(/\.js$/, '')];
+        }
+      }
     }
   }
   if (changed) {

scripts/shared/inlinedHostConfigs.js

@@ -11,7 +11,7 @@ module.exports = [
     shortName: 'dom',
     entryPoints: [
       'react-dom',
-      'react-dom/testing',
+      'react-dom/unstable_testing',
       'react-dom/src/server/ReactDOMFizzServerNode',
       'react-server-dom-webpack/writer.node.server',
       'react-server-dom-webpack',
@@ -33,14 +33,14 @@ module.exports = [
     shortName: 'dom-browser',
     entryPoints: [
       'react-dom',
-      'react-dom/testing',
+      'react-dom/unstable_testing',
       'react-dom/src/server/ReactDOMFizzServerBrowser',
       'react-server-dom-webpack/writer.browser.server',
       'react-server-dom-webpack',
     ],
     paths: [
       'react-dom',
-      'react-dom/testing',
+      'react-dom/unstable_testing',
       'react-dom/src/server/ReactDOMFizzServerBrowser.js', // react-dom/server.browser
       'react-server-dom-webpack',
       'react-server-dom-webpack/writer.browser.server',