refactor(@angular/build): use rolldown for experimental chunk optimization

Replaces rollup with rolldown for the experimental chunk optimization
feature. This change is expected to improve performance of this feature.
One relevant change to the output with this switch is that an ASCII only
output does not currently appear possible with rolldown. As a result, the
output with this experimental feature enabled will be UTF-8 instead.

Author: clydin

packages/angular/build/BUILD.bazel

@@ -111,6 +111,7 @@ ts_project(
         ":node_modules/picomatch",
         ":node_modules/piscina",
         ":node_modules/postcss",
+        ":node_modules/rolldown",
         ":node_modules/sass",
         ":node_modules/source-map-support",
         ":node_modules/tinyglobby",
@@ -135,7 +136,6 @@ ts_project(
         "//:node_modules/esbuild",
         "//:node_modules/esbuild-wasm",
         "//:node_modules/karma",
-        "//:node_modules/rollup",
         "//:node_modules/semver",
         "//:node_modules/tslib",
         "//:node_modules/typescript",

packages/angular/build/package.json

@@ -37,7 +37,7 @@
     "parse5-html-rewriting-stream": "8.0.0",
     "picomatch": "4.0.3",
     "piscina": "5.1.3",
-    "rollup": "4.45.1",
+    "rolldown": "1.0.0-beta.29",
     "sass": "1.89.2",
     "semver": "7.7.2",
     "source-map-support": "0.5.21",

packages/angular/build/src/builders/application/chunk-optimizer.ts

@@ -7,7 +7,7 @@
  */
 
 import assert from 'node:assert';
-import { rollup } from 'rollup';
+import { rolldown } from 'rolldown';
 import {
   BuildOutputFile,
   BuildOutputFileType,
@@ -65,7 +65,7 @@ export async function optimizeChunks(
   let bundle;
   let optimizedOutput;
   try {
-    bundle = await rollup({
+    bundle = await rolldown({
       input: mainFile,
       plugins: [
         {
@@ -101,7 +101,7 @@ export async function optimizeChunks(
     });
 
     const result = await bundle.generate({
-      compact: true,
+      minify: { mangle: false, compress: false, removeWhitespace: true },
       sourcemap,
       chunkFileNames: (chunkInfo) => `${chunkInfo.name.replace(/-[a-zA-Z0-9]{8}$/, '')}-[hash].js`,
     });

packages/angular/build/src/tools/vite/plugins/ssr-transform-plugin.ts

@@ -7,7 +7,6 @@
  */
 
 import remapping, { SourceMapInput } from '@ampproject/remapping';
-import type { SourceDescription } from 'rollup';
 import type { Plugin } from 'vite';
 import { loadEsmModule } from '../../../utils/load-esm';
 
@@ -28,7 +27,8 @@ export async function createAngularSsrTransformPlugin(workspaceRoot: string): Pr
 
       return {
         code,
-        map: remappedMap as SourceDescription['map'],
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        map: remappedMap as any,
       };
     },
   };

pnpm-lock.yaml

@@ -53,6 +53,7 @@ WEBPACK_IGNORE_TESTS = [
     "tests/build/wasm-esm.js",
     "tests/build/auto-csp*",
     "tests/build/incremental-watch.js",
+    "tests/build/chunk-optimizer.js",
 ]
 
 def _to_glob(patterns):