Rename "shared subset" to "server" (#27939)

The internal file ReactSharedSubset is what the `react` module resolves
to when imported from a Server Component environment. We gave it this
name because, originally, the idea was that Server Components can access
a subset of the APIs available on the client.

However, since then, we've also added APIs that can _only_ by accessed
on the server and not the client. In other words, it's no longer a
subset, it's a slightly different overlapping set.

So this commit renames ReactSharedSubet to ReactServer and updates all
the references. This does not affect the public API, only our internal
implementation.

Author: acdlite

packages/react-client/src/__tests__/ReactFlight-test.js

@@ -43,7 +43,7 @@ let assertLog;
 describe('ReactFlight', () => {
   beforeEach(() => {
     jest.resetModules();
-    jest.mock('react', () => require('react/react.shared-subset'));
+    jest.mock('react', () => require('react/react.react-server'));
     ReactServer = require('react');
     ReactNoopFlightServer = require('react-noop-renderer/flight-server');
     // This stores the state so we need to preserve it
@@ -1465,7 +1465,7 @@ describe('ReactFlight', () => {
       // Reset all modules, except flight-modules which keeps the registry of Client Components
       const flightModules = require('react-noop-renderer/flight-modules');
       jest.resetModules();
-      jest.mock('react', () => require('react/react.shared-subset'));
+      jest.mock('react', () => require('react/react.react-server'));
       jest.mock('react-noop-renderer/flight-modules', () => flightModules);
 
       ReactServer = require('react');

packages/react-dom/npm/react-dom.react-server.js

@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-dom.react-server.production.min.js');
+} else {
+  module.exports = require('./cjs/react-dom.react-server.development.js');
+}

packages/react-dom/npm/react-dom.shared-subset.js

@@ -42,13 +42,13 @@
     "test-utils.js",
     "unstable_testing.js",
     "unstable_server-external-runtime.js",
-    "react-dom.shared-subset.js",
+    "react-dom.react-server.js",
     "cjs/",
     "umd/"
   ],
   "exports": {
     ".": {
-      "react-server": "./react-dom.shared-subset.js",
+      "react-server": "./react-dom.react-server.js",
       "default": "./index.js"
     },
     "./client": "./client.js",

packages/react-dom/package.json

@@ -12,7 +12,7 @@
 describe('ReactDOMInReactServer', () => {
   beforeEach(() => {
     jest.resetModules();
-    jest.mock('react', () => require('react/react.shared-subset'));
+    jest.mock('react', () => require('react/react.react-server'));
   });
 
   it('can require react-dom', () => {

packages/react-dom/src/ReactDOMSharedSubset.js renamed to packages/react-dom/src/ReactDOMServer.js

@@ -73,7 +73,7 @@ describe('ReactFlightDOM for FB', () => {
     // condition
     jest.resetModules();
 
-    jest.mock('react', () => require('react/src/ReactSharedSubsetFB'));
+    jest.mock('react', () => require('react/src/ReactServerFB'));
 
     jest.mock('shared/ReactFeatureFlags', () => {
       jest.mock(

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

@@ -41,7 +41,7 @@ describe('ReactFlightDOM', () => {
     jest.mock('react-server-dom-turbopack/server', () =>
       require('react-server-dom-turbopack/server.node.unbundled'),
     );
-    jest.mock('react', () => require('react/react.shared-subset'));
+    jest.mock('react', () => require('react/react.react-server'));
 
     const TurbopackMock = require('./utils/TurbopackMock');
     clientExports = TurbopackMock.clientExports;

packages/react-server-dom-fb/src/__tests__/ReactFlightDOMServerFB-test.internal.js

@@ -24,7 +24,7 @@ describe('ReactFlightDOMBrowser', () => {
     jest.resetModules();
 
     // Simulate the condition resolution
-    jest.mock('react', () => require('react/react.shared-subset'));
+    jest.mock('react', () => require('react/react.react-server'));
     jest.mock('react-server-dom-turbopack/server', () =>
       require('react-server-dom-turbopack/server.browser'),
     );

packages/react-server-dom-turbopack/src/__tests__/ReactFlightTurbopackDOM-test.js

@@ -33,7 +33,7 @@ describe('ReactFlightDOMEdge', () => {
     jest.resetModules();
 
     // Simulate the condition resolution
-    jest.mock('react', () => require('react/react.shared-subset'));
+    jest.mock('react', () => require('react/react.react-server'));
     jest.mock('react-server-dom-turbopack/server', () =>
       require('react-server-dom-turbopack/server.edge'),
     );