[Flight] Rename the shared entry point

Author: gaearon

packages/react/npm/unstable-index.server.js

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

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

@@ -17,16 +17,16 @@
     "umd/",
     "jsx-runtime.js",
     "jsx-dev-runtime.js",
-    "unstable-index.server.js"
+    "unstable-shared-subset.js"
   ],
   "main": "index.js",
   "exports": {
     ".": {
-      "react-server": "./unstable-index.server.js",
+      "react-server": "./unstable-shared-subset.js",
       "default": "./index.js"
     },
     "./index": {
-      "react-server": "./unstable-index.server.js",
+      "react-server": "./unstable-shared-subset.js",
       "default": "./index.js"
     },
     "./build-info.json": "./build-info.json",

packages/react/package.json

@@ -69,7 +69,6 @@ const {
 } = moduleTypes;
 
 const bundles = [
-  /******* Isomorphic *******/
   {
     bundleTypes: [
       UMD_DEV,
@@ -90,11 +89,11 @@ const bundles = [
     externals: [],
   },
 
-  /******* Isomorphic Server Only *******/
+  /******* Isomorphic Shared Subset *******/
   {
     bundleTypes: [NODE_DEV, NODE_PROD],
     moduleType: ISOMORPHIC,
-    entry: 'react/unstable-index.server',
+    entry: 'react/unstable-shared-subset',
     global: 'React',
     externals: [],
   },

packages/react/unstable-index.server.experimental.js renamed to packages/react/unstable-shared-subset.experimental.js

@@ -43,7 +43,7 @@ const forks = Object.freeze({
       // happens. Other bundles just require('object-assign') anyway.
       return null;
     }
-    if (entry === 'react' || entry === 'react/unstable-index.server') {
+    if (entry === 'react' || entry.startsWith('react/')) {
       // Use the forked version that uses ES modules instead of CommonJS.
       return 'shared/forks/object-assign.inline-umd.js';
     }
@@ -64,10 +64,10 @@ const forks = Object.freeze({
   // Without this fork, importing `shared/ReactSharedInternals` inside
   // the `react` package itself would not work due to a cyclical dependency.
   'shared/ReactSharedInternals': (bundleType, entry, dependencies) => {
-    if (entry === 'react' || entry === 'react/unstable-index.server') {
+    if (entry === 'react' || entry.startsWith('react/')) {
       return 'react/src/ReactSharedInternals.js';
     }
-    if (!entry.startsWith('react/') && dependencies.indexOf('react') === -1) {
+    if (dependencies.indexOf('react') === -1) {
       // React internals are unavailable if we can't reference the package.
       // We return an error because we only want to throw if this module gets used.
       return new Error(