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

Author: sebmarkbage

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.internal.js renamed to packages/react-dom/src/__tests__/ReactDOMTestSelectors-test.js

@@ -31,21 +31,23 @@ describe('ReactDOMTestSelectors', () => {
     jest.resetModules();
 
     React = require('react');
-
-    const ReactDOM = require('react-dom/testing');
     act = React.unstable_act;
-    createComponentSelector = ReactDOM.createComponentSelector;
-    createHasPseudoClassSelector = ReactDOM.createHasPseudoClassSelector;
-    createRoleSelector = ReactDOM.createRoleSelector;
-    createTextSelector = ReactDOM.createTextSelector;
-    createTestNameSelector = ReactDOM.createTestNameSelector;
-    findAllNodes = ReactDOM.findAllNodes;
-    findBoundingRects = ReactDOM.findBoundingRects;
-    focusWithin = ReactDOM.focusWithin;
-    getFindAllNodesFailureDescription =
-      ReactDOM.getFindAllNodesFailureDescription;
-    observeVisibleRects = ReactDOM.observeVisibleRects;
-    render = ReactDOM.render;
+
+    if (__EXPERIMENTAL__ || global.__WWW__) {
+      const ReactDOM = require('react-dom/unstable_testing');
+      createComponentSelector = ReactDOM.createComponentSelector;
+      createHasPseudoClassSelector = ReactDOM.createHasPseudoClassSelector;
+      createRoleSelector = ReactDOM.createRoleSelector;
+      createTextSelector = ReactDOM.createTextSelector;
+      createTestNameSelector = ReactDOM.createTestNameSelector;
+      findAllNodes = ReactDOM.findAllNodes;
+      findBoundingRects = ReactDOM.findBoundingRects;
+      focusWithin = ReactDOM.focusWithin;
+      getFindAllNodesFailureDescription =
+        ReactDOM.getFindAllNodesFailureDescription;
+      observeVisibleRects = ReactDOM.observeVisibleRects;
+      render = ReactDOM.render;
+    }
 
     container = document.createElement('div');
     document.body.appendChild(container);

packages/react-dom/testing.classic.fb.js renamed to packages/react-dom/unstable_testing.classic.fb.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,

packages/react-dom/testing.experimental.js renamed to packages/react-dom/unstable_testing.experimental.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:

packages/react-dom/testing.js renamed to packages/react-dom/unstable_testing.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) {