Update Rollup to 3.x (#26442)

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## Summary

This PR:

- Updates Rollup from 2.x to latest 3.x, and updates associated plugins
- Updates deprecated / altered config settings in the Rollup plugin
pipeline
- Fixes some file extension and import issues related to use of ESM in
`react-dom-webpack-server`
- Removes a now-obsolete `strip-unused-imports` Rollup plugin
- <s>Fixes an _existing_ bug with the Rollup 2.x plugin pipeline on
`main` that was causing parts of `DOMProperty.js` to get left out of the
`react-dom-webpack-server` JS bundles, by adding a new plugin to tell
Rollup to treat that file as if it as side effects</s>

This PR should be functionally identical to the other existing "Rollup 3
upgrade" PR at #26078 . I'm filing this as a near-duplicate because I'm
ready to push this change through ASAP so that I can follow it up with a
PR that adds sourcemap support, that PR's artifact diffing seems like
it's possibly stuck and I want to compare the build results, and I've
got this set up against latest `main`.

<!--
Explain the **motivation** for making this change. What existing problem
does the pull request solve?
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This gets React's build setup updated to the latest Rollup version,
which is generally a good practice, but also ensures that any further
Rollup config tweaks can be done using the current Rollup docs as a
reference.

## How did you test this change?

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- Made builds from the latest `main`
- Updated Rollup package versions and cross-compared the changes I
needed to make locally to get successful builds vs #26078
- Diffed the output folders between `main` and this PR, and confirmed
that the bundle contents are identical (with the exception of version
strings and the `react-dom-webpack-server` bundle fix re-adding missing
`DOMProperty.js` content)

package.json

@@ -36,10 +36,10 @@
     "@babel/preset-flow": "^7.10.4",
     "@babel/preset-react": "^7.10.4",
     "@babel/traverse": "^7.11.0",
-    "@rollup/plugin-babel": "^5.3.1",
-    "@rollup/plugin-commonjs": "^22.0.1",
-    "@rollup/plugin-node-resolve": "^13.3.0",
-    "@rollup/plugin-replace": "^4.0.0",
+    "@rollup/plugin-babel": "^6.0.3",
+    "@rollup/plugin-commonjs": "^24.0.1",
+    "@rollup/plugin-node-resolve": "^15.0.1",
+    "@rollup/plugin-replace": "^5.0.2",
     "abortcontroller-polyfill": "^1.7.5",
     "art": "0.10.1",
     "babel-plugin-syntax-trailing-function-commas": "^6.5.0",
@@ -89,9 +89,9 @@
     "random-seed": "^0.3.0",
     "react-lifecycles-compat": "^3.0.4",
     "rimraf": "^3.0.0",
-    "rollup": "^2.76.0",
+    "rollup": "^3.17.1",
     "rollup-plugin-prettier": "^3.0.0",
-    "rollup-plugin-strip-banner": "^2.0.0",
+    "rollup-plugin-strip-banner": "^3.0.0",
     "semver": "^7.1.1",
     "targz": "^1.0.1",
     "through2": "^3.0.1",

packages/react-devtools-extensions/package.json

@@ -27,9 +27,6 @@
     "@babel/plugin-transform-modules-commonjs": "^7.10.4",
     "@babel/plugin-transform-react-jsx-source": "^7.10.5",
     "@babel/preset-react": "^7.10.4",
-    "@rollup/plugin-babel": "^5.3.1",
-    "@rollup/plugin-commonjs": "^22.0.1",
-    "@rollup/plugin-node-resolve": "^13.3.0",
     "acorn-jsx": "^5.2.0",
     "archiver": "^3.0.0",
     "babel-core": "^7.0.0-bridge",
@@ -58,7 +55,6 @@
     "os-name": "^3.1.0",
     "parse-filepath": "^1.0.2",
     "raw-loader": "^3.1.0",
-    "rollup": "^2.76.0",
     "source-map-js": "^0.6.2",
     "sourcemap-codec": "^1.4.8",
     "style-loader": "^0.23.1",

packages/react-server-dom-webpack/package.json

@@ -66,7 +66,7 @@
     "./server.node.unbundled": "./server.node.unbundled.js",
     "./node-loader": "./esm/react-server-dom-webpack-node-loader.production.min.js",
     "./node-register": "./node-register.js",
-    "./src/*": "./src/*",
+    "./src/*": "./src/*.js",
     "./package.json": "./package.json"
   },
   "main": "index.js",

scripts/rollup/build.js

@@ -18,7 +18,6 @@ const Stats = require('./stats');
 const Sync = require('./sync');
 const sizes = require('./plugins/sizes-plugin');
 const useForks = require('./plugins/use-forks-plugin');
-const stripUnusedImports = require('./plugins/strip-unused-imports');
 const dynamicImports = require('./plugins/dynamic-imports');
 const Packaging = require('./packaging');
 const {asyncRimRaf} = require('./utils');
@@ -174,6 +173,31 @@ function getBabelConfig(
   return options;
 }
 
+let getRollupInteropValue = id => {
+  // We're setting Rollup to assume that imports are ES modules unless otherwise specified.
+  // However, we also compile ES import syntax to `require()` using Babel.
+  // This causes Rollup to turn uses of `import SomeDefaultImport from 'some-module' into
+  // references to `SomeDefaultImport.default` due to CJS/ESM interop.
+  // Some CJS modules don't have a `.default` export, and the rewritten import is incorrect.
+  // Specifying `interop: 'default'` instead will have Rollup use the imported variable as-is,
+  // without adding a `.default` to the reference.
+  const modulesWithCommonJsExports = [
+    'JSResourceReferenceImpl',
+    'error-stack-parser',
+    'art/core/transform',
+    'art/modes/current',
+    'art/modes/fast-noSideEffects',
+    'art/modes/svg',
+  ];
+
+  if (modulesWithCommonJsExports.includes(id)) {
+    return 'default';
+  }
+
+  // For all other modules, handle imports without any import helper utils
+  return 'esModule';
+};
+
 function getRollupOutputOptions(
   outputPath,
   format,
@@ -188,7 +212,7 @@ function getRollupOutputOptions(
     format,
     globals,
     freeze: !isProduction,
-    interop: false,
+    interop: getRollupInteropValue,
     name: globalName,
     sourcemap: false,
     esModule: false,
@@ -420,9 +444,6 @@ function getPlugins(
         assume_function_wrapper: !isUMDBundle,
         renaming: !shouldStayReadable,
       }),
-    // HACK to work around the fact that Rollup isn't removing unused, pure-module imports.
-    // Note that this plugin must be called after closure applies DCE.
-    isProduction && stripUnusedImports(pureExternalModules),
     // Add the whitespace back if necessary.
     shouldStayReadable &&
       prettier({
@@ -616,7 +637,7 @@ async function createBundle(bundle, bundleType) {
     output: {
       externalLiveBindings: false,
       freeze: false,
-      interop: false,
+      interop: getRollupInteropValue,
       esModule: false,
     },
   };

scripts/rollup/bundles.js

@@ -442,7 +442,7 @@ const bundles = [
   {
     bundleTypes: [NODE_ES2015],
     moduleType: RENDERER_UTILS,
-    entry: 'react-server-dom-webpack/src/ReactFlightWebpackNodeRegister.js',
+    entry: 'react-server-dom-webpack/src/ReactFlightWebpackNodeRegister',
     name: 'react-server-dom-webpack-node-register',
     global: 'ReactFlightWebpackNodeRegister',
     minifyWithProdErrorCodes: false,

scripts/rollup/wrappers.js

@@ -354,7 +354,10 @@ if (process.env.NODE_ENV !== "production") {
 ${source}
     return exports;
   };
-}`;
+  module.exports.default = module.exports;
+  Object.defineProperty(module.exports, "__esModule", { value: true });
+}
+`;
   },
 
   /***************** NODE_PROD (reconciler only) *****************/
@@ -366,10 +369,14 @@ ${source}
 ${license}
  */
 module.exports = function $$$reconciler($$$hostConfig) {
+    
     var exports = {};
 ${source}
     return exports;
-};`;
+};
+module.exports.default = module.exports;
+Object.defineProperty(module.exports, "__esModule", { value: true });
+`;
   },
 
   /***************** NODE_PROFILING (reconciler only) *****************/
@@ -384,7 +391,10 @@ module.exports = function $$$reconciler($$$hostConfig) {
     var exports = {};
 ${source}
     return exports;
-};`;
+};
+module.exports.default = module.exports;
+Object.defineProperty(module.exports, "__esModule", { value: true });
+`;
   },
 };