diff --git a/packages/angular/build/BUILD.bazel b/packages/angular/build/BUILD.bazel
index 69d8ac3e2dd8..472c87b37dc8 100644
--- a/packages/angular/build/BUILD.bazel
+++ b/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",
diff --git a/packages/angular/build/package.json b/packages/angular/build/package.json
index 388615b013f9..077b8a9fcb14 100644
--- a/packages/angular/build/package.json
+++ b/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",
diff --git a/packages/angular/build/src/builders/application/chunk-optimizer.ts b/packages/angular/build/src/builders/application/chunk-optimizer.ts
index a0ffa657b5c3..0dce43becdab 100644
--- a/packages/angular/build/src/builders/application/chunk-optimizer.ts
+++ b/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`,
     });
diff --git a/packages/angular/build/src/tools/vite/plugins/ssr-transform-plugin.ts b/packages/angular/build/src/tools/vite/plugins/ssr-transform-plugin.ts
index b3af4824eb54..0ac7b92d442d 100644
--- a/packages/angular/build/src/tools/vite/plugins/ssr-transform-plugin.ts
+++ b/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,
       };
     },
   };
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index e829f37c25a5..98b5790c68a7 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -403,9 +403,9 @@ importers:
       piscina:
         specifier: 5.1.3
         version: 5.1.3
-      rollup:
-        specifier: 4.45.1
-        version: 4.45.1
+      rolldown:
+        specifier: 1.0.0-beta.29
+        version: 1.0.0-beta.29
       sass:
         specifier: 1.89.2
         version: 1.89.2
@@ -1641,6 +1641,15 @@ packages:
     resolution: {integrity: sha512-4B4OijXeVNOPZlYA2oEwWOTkzyltLao+xbotHQeqN++Rv27Y6s818+n2Qkp8q+Fxhn0t/5lA5X1Mxktud8eayQ==}
     engines: {node: '>=14.17.0'}
 
+  '@emnapi/core@1.4.5':
+    resolution: {integrity: sha512-XsLw1dEOpkSX/WucdqUhPWP7hDxSvZiY+fsUC14h+FtQ2Ifni4znbBt8punRX+Uj2JG/uDb8nEHVKvrVlvdZ5Q==}
+
+  '@emnapi/runtime@1.4.5':
+    resolution: {integrity: sha512-++LApOtY0pEEz1zrd9vy1/zXVaVJJ/EbAF3u0fXIzPJEDtnITsBGbbK0EkM72amhl/R5b+5xx0Y/QhcVOpuulg==}
+
+  '@emnapi/wasi-threads@1.0.4':
+    resolution: {integrity: sha512-PJR+bOmMOPH8AtcTGAyYNiuJ3/Fcoj2XN/gBEWzDIKh254XO+mM9XoXHk5GNEhodxeMznbg7BlRojVbKN+gC6g==}
+
   '@esbuild/aix-ppc64@0.25.8':
     resolution: {integrity: sha512-urAvrUedIqEiFR3FYSLTWQgLu5tb+m0qZw0NBEasUeo6wuqatkMDaRT+1uABiGXEu5vqgPd7FGE1BhsAIy9QVA==}
     engines: {node: '>=18'}
@@ -2276,6 +2285,9 @@ packages:
     resolution: {integrity: sha512-Sqih1YARrmMoHlXGgI9JrrgkzxcaaEso0AH+Y7j8NHonUs+xe4iDsgC3IBIDNdzEewbNpccNN6hip+b5vmyRLw==}
     engines: {node: '>= 10'}
 
+  '@napi-rs/wasm-runtime@1.0.1':
+    resolution: {integrity: sha512-KVlQ/jgywZpixGCKMNwxStmmbYEMyokZpCf2YuIChhfJA2uqfAKNEM8INz7zzTo55iEXfBhIIs3VqYyqzDLj8g==}
+
   '@nodelib/fs.scandir@2.1.5':
     resolution: {integrity: sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==}
     engines: {node: '>= 8'}
@@ -2397,6 +2409,13 @@ packages:
     resolution: {integrity: sha512-TtxJSRD8Ohxp6bKkhrm27JRHAxPczQA7idtcTOMYI+wQRRrfgqxHv1cFbCApcSnNjtXkmzFozn6jQtFrOmbjPQ==}
     engines: {node: '>=14'}
 
+  '@oxc-project/runtime@0.77.3':
+    resolution: {integrity: sha512-vsC/ewcGJ7xXnnwZkku7rpPH5Lxb5g4J+V6lD9eBTnRLmXVXM7Qu50y+ozD+UD5IXaSoVOvVMGTT4YSNCz2MQQ==}
+    engines: {node: '>=6.9.0'}
+
+  '@oxc-project/types@0.77.3':
+    resolution: {integrity: sha512-5Vh+neJhhxuF0lYCjZXbxjqm2EO6YJ1jG+KuHntrd6VY67OMpYhWq2cZhUhy+xL9qLJVJRaeII7Xj9fciA6v7A==}
+
   '@parcel/watcher-android-arm64@2.5.1':
     resolution: {integrity: sha512-KF8+j9nNbUN8vzOFDpRMsaKBHZ/mcjEjMToVMJOhTozkDonQFFrRcfdLWn6yWKCmJKmdVxSgHiYvTCef4/qcBA==}
     engines: {node: '>= 10.0.0'}
@@ -2518,6 +2537,79 @@ packages:
     engines: {node: '>=18'}
     hasBin: true
 
+  '@rolldown/binding-android-arm64@1.0.0-beta.29':
+    resolution: {integrity: sha512-pDv7gg59Gdy80eFmMkEqXEaoJi3Y9W/a9T3z9M4t8Ma8aVXNldvSy9UgtlX7AK7DPqF8tULnmIZ2Z3rvGMz/NQ==}
+    cpu: [arm64]
+    os: [android]
+
+  '@rolldown/binding-darwin-arm64@1.0.0-beta.29':
+    resolution: {integrity: sha512-fPqR6TfTqbzgKKCQYtcCS+Dms91YcptTbdlwJ13DxOUgMe8LgDIVsLLlEykfm7ijJd5mM4zNw0Hr2CJb6kvQZw==}
+    cpu: [arm64]
+    os: [darwin]
+
+  '@rolldown/binding-darwin-x64@1.0.0-beta.29':
+    resolution: {integrity: sha512-7Z4qosL0xN8i6++txHOEPCVP3/lcGLOvftUJOWATZ5aDkDskwcZDa66BGiJt/K1/DgW4kpRVmnGWUWAORHBbFA==}
+    cpu: [x64]
+    os: [darwin]
+
+  '@rolldown/binding-freebsd-x64@1.0.0-beta.29':
+    resolution: {integrity: sha512-0HLTfPW5Glh608s76qgayN/nPsXPchNUumavf7W5nh1eMG6qBsOO7Q1QaK0v4un7qtsn3IA/1Tgq0ZgNc0dbeg==}
+    cpu: [x64]
+    os: [freebsd]
+
+  '@rolldown/binding-linux-arm-gnueabihf@1.0.0-beta.29':
+    resolution: {integrity: sha512-QNboxdVTJOZS4zP8kA2+XUwAegejd5QNSH5zVR4neqG2AfbxRcMFzSVRkJHN6yDaaKweD/4sUvXfmef6p/7zsw==}
+    cpu: [arm]
+    os: [linux]
+
+  '@rolldown/binding-linux-arm64-gnu@1.0.0-beta.29':
+    resolution: {integrity: sha512-hzBmOtYdC4369XxN2SNJ3oBlXKWNif3ieWBT+oh/qvAeox4fQR0ngqyh+kIGOufBnP5Zc2rqJf9LzIbJw3Tx/Q==}
+    cpu: [arm64]
+    os: [linux]
+
+  '@rolldown/binding-linux-arm64-musl@1.0.0-beta.29':
+    resolution: {integrity: sha512-6B35GmFJJ4RX88OgubrnUmuJBUgRh6/OTXIpy8m/VUnoc683lufIPo26HW/0LxLgxp2GM7KHr3LOULcVxbqq4Q==}
+    cpu: [arm64]
+    os: [linux]
+
+  '@rolldown/binding-linux-arm64-ohos@1.0.0-beta.29':
+    resolution: {integrity: sha512-z3ru8fUCunQM8q9I7RbDVMT5cxzxVVVBNNKM5/qAQQrdObd1u8g0LR5z0yLtaFWzybwLVdPtJDRcXtLm5tOBFA==}
+    cpu: [arm64]
+    os: [openharmony]
+
+  '@rolldown/binding-linux-x64-gnu@1.0.0-beta.29':
+    resolution: {integrity: sha512-n6fs4L7j99MIiI6vKhQDdyScv4/uMAPtIMkB0zGbUX8MKWT1osym1hvWVdlENjnS/Phf0zzhjyOgoFDzdhI1cQ==}
+    cpu: [x64]
+    os: [linux]
+
+  '@rolldown/binding-linux-x64-musl@1.0.0-beta.29':
+    resolution: {integrity: sha512-C5hcJgtDN4rp6/WsPTQSDVUWrdnIC//ynMGcUIh1O0anm9KnSy47zKQ5D9EqtlEKvO+2PPqmyUVJ2DTq18nlVA==}
+    cpu: [x64]
+    os: [linux]
+
+  '@rolldown/binding-wasm32-wasi@1.0.0-beta.29':
+    resolution: {integrity: sha512-lMN1IBItdZFO182Sdus9oVuNDqyIymn/bsR5KwgeGaiqLsrmpQHBSLwkS/nKJO1nzYlpGDRugFSpnrSJ5ZmihQ==}
+    engines: {node: '>=14.0.0'}
+    cpu: [wasm32]
+
+  '@rolldown/binding-win32-arm64-msvc@1.0.0-beta.29':
+    resolution: {integrity: sha512-0UrXCUAOrbWdyVJskzjtne/4d3YMMhhhpBnob3SeF4jAvbKYqPhCZJ71pP7yUpvbowGXXTnHWpKfitg4Sovmtw==}
+    cpu: [arm64]
+    os: [win32]
+
+  '@rolldown/binding-win32-ia32-msvc@1.0.0-beta.29':
+    resolution: {integrity: sha512-YX0OYL1dcB7rPnsndpEa68fytYyZZj1iaWzH7momFB2oBS2lXAe1UrrDWcdLoUXdzPIyzpvtBCiS2XcDgYG7ag==}
+    cpu: [ia32]
+    os: [win32]
+
+  '@rolldown/binding-win32-x64-msvc@1.0.0-beta.29':
+    resolution: {integrity: sha512-azrPWbV+NZiCFNs59AgH9Y6vFKHoAI6T/XtKKsoLxkPyP1LpbdgL5eqRfeWz+GCAUY9qhDOC4hH1GjFG8PrZIg==}
+    cpu: [x64]
+    os: [win32]
+
+  '@rolldown/pluginutils@1.0.0-beta.29':
+    resolution: {integrity: sha512-NIJgOsMjbxAXvoGq/X0gD7VPMQ8j9g0BiDaNjVNVjvl+iKXxL3Jre0v31RmBYeLEmkbj2s02v8vFTbUXi5XS2Q==}
+
   '@rollup/plugin-alias@5.1.1':
     resolution: {integrity: sha512-PR9zDb+rOzkRb2VD+EuKB7UC41vU5DIwZ5qqCpk0KJudcWAyi8rvYOhS7+L5aZCspw1stTViLgN5v6FF1p5cgQ==}
     engines: {node: '>=14.0.0'}
@@ -2740,6 +2832,9 @@ packages:
     resolution: {integrity: sha512-UUYHISyhCU3ZgN8yaear3cGATHb3SMuKHsQ/nVbHXcmnBf+LzQ/cQfhNG+rfaSHgqGKNEm2cOCLVLELStUQ1JA==}
     engines: {node: ^18.17.0 || >=20.5.0}
 
+  '@tybys/wasm-util@0.10.0':
+    resolution: {integrity: sha512-VyyPYFlOMNylG45GoAe0xDoLwWuowvf92F9kySqzYh8vmYm7D2u4iUJKa1tOUpS70Ku13ASrOkS4ScXFsTaCNQ==}
+
   '@types/accepts@1.3.7':
     resolution: {integrity: sha512-Pay9fq2lM2wXPWbteBsRAGiWH2hig4ZE2asK+mm7kUzlxRTfL961rj89I6zV/E3PcIkDqyuBEcMxFT7rccugeQ==}
 
@@ -3428,6 +3523,10 @@ packages:
     resolution: {integrity: sha512-bN798gFfQX+viw3R7yrGWRqnrN2oRkEkUjjl4JNn4E8GxxbjtG3FbrEIIY3l8/hrwUwIeCZvi4QuOTP4MErVug==}
     engines: {node: '>=12'}
 
+  ansis@4.1.0:
+    resolution: {integrity: sha512-BGcItUBWSMRgOCe+SVZJ+S7yTRG0eGt9cXAHev72yuGcY23hnLA7Bky5L/xLyPINoSN95geovfBkqoTlNZYa7w==}
+    engines: {node: '>=14'}
+
   anymatch@3.1.3:
     resolution: {integrity: sha512-KMReFUr0B4t+D+OBkjR3KYqvocp2XaSzO55UcB6mgQMd3KbcE+mWTyvVV7D/zsdEbNnV6acZUutkiHQXvTr1Rw==}
     engines: {node: '>= 8'}
@@ -7048,6 +7147,10 @@ packages:
     deprecated: Rimraf versions prior to v4 are no longer supported
     hasBin: true
 
+  rolldown@1.0.0-beta.29:
+    resolution: {integrity: sha512-EsoOi8moHN6CAYyTZipxDDVTJn0j2nBCWor4wRU45RQ8ER2qREDykXLr3Ulz6hBh6oBKCFTQIjo21i0FXNo/IA==}
+    hasBin: true
+
   rollup-license-plugin@3.0.2:
     resolution: {integrity: sha512-68LWDlUKxqLO4Si3Extca4X7P99tU7s0KLnVUzN6h6SDihGAWYMQ0q73XLnHbUmG0IFgvC0AzuYvbogceQ9Hcw==}
     engines: {node: '>=18.0.0'}
@@ -9312,6 +9415,22 @@ snapshots:
 
   '@discoveryjs/json-ext@0.6.3': {}
 
+  '@emnapi/core@1.4.5':
+    dependencies:
+      '@emnapi/wasi-threads': 1.0.4
+      tslib: 2.8.1
+    optional: true
+
+  '@emnapi/runtime@1.4.5':
+    dependencies:
+      tslib: 2.8.1
+    optional: true
+
+  '@emnapi/wasi-threads@1.0.4':
+    dependencies:
+      tslib: 2.8.1
+    optional: true
+
   '@esbuild/aix-ppc64@0.25.8':
     optional: true
 
@@ -9851,6 +9970,13 @@ snapshots:
       '@napi-rs/nice-win32-x64-msvc': 1.0.4
     optional: true
 
+  '@napi-rs/wasm-runtime@1.0.1':
+    dependencies:
+      '@emnapi/core': 1.4.5
+      '@emnapi/runtime': 1.4.5
+      '@tybys/wasm-util': 0.10.0
+    optional: true
+
   '@nodelib/fs.scandir@2.1.5':
     dependencies:
       '@nodelib/fs.stat': 2.0.5
@@ -9997,6 +10123,10 @@ snapshots:
 
   '@opentelemetry/semantic-conventions@1.36.0': {}
 
+  '@oxc-project/runtime@0.77.3': {}
+
+  '@oxc-project/types@0.77.3': {}
+
   '@parcel/watcher-android-arm64@2.5.1':
     optional: true
 
@@ -10097,6 +10227,52 @@ snapshots:
       - bare-buffer
       - supports-color
 
+  '@rolldown/binding-android-arm64@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-darwin-arm64@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-darwin-x64@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-freebsd-x64@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-linux-arm-gnueabihf@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-linux-arm64-gnu@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-linux-arm64-musl@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-linux-arm64-ohos@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-linux-x64-gnu@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-linux-x64-musl@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-wasm32-wasi@1.0.0-beta.29':
+    dependencies:
+      '@napi-rs/wasm-runtime': 1.0.1
+    optional: true
+
+  '@rolldown/binding-win32-arm64-msvc@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-win32-ia32-msvc@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/binding-win32-x64-msvc@1.0.0-beta.29':
+    optional: true
+
+  '@rolldown/pluginutils@1.0.0-beta.29': {}
+
   '@rollup/plugin-alias@5.1.1(rollup@4.45.1)':
     optionalDependencies:
       rollup: 4.45.1
@@ -10278,6 +10454,11 @@ snapshots:
       '@tufjs/canonical-json': 2.0.0
       minimatch: 9.0.5
 
+  '@tybys/wasm-util@0.10.0':
+    dependencies:
+      tslib: 2.8.1
+    optional: true
+
   '@types/accepts@1.3.7':
     dependencies:
       '@types/node': 20.19.9
@@ -11304,6 +11485,8 @@ snapshots:
 
   ansi-styles@6.2.1: {}
 
+  ansis@4.1.0: {}
+
   anymatch@3.1.3:
     dependencies:
       normalize-path: 3.0.0
@@ -15426,6 +15609,28 @@ snapshots:
     dependencies:
       glob: 7.2.3
 
+  rolldown@1.0.0-beta.29:
+    dependencies:
+      '@oxc-project/runtime': 0.77.3
+      '@oxc-project/types': 0.77.3
+      '@rolldown/pluginutils': 1.0.0-beta.29
+      ansis: 4.1.0
+    optionalDependencies:
+      '@rolldown/binding-android-arm64': 1.0.0-beta.29
+      '@rolldown/binding-darwin-arm64': 1.0.0-beta.29
+      '@rolldown/binding-darwin-x64': 1.0.0-beta.29
+      '@rolldown/binding-freebsd-x64': 1.0.0-beta.29
+      '@rolldown/binding-linux-arm-gnueabihf': 1.0.0-beta.29
+      '@rolldown/binding-linux-arm64-gnu': 1.0.0-beta.29
+      '@rolldown/binding-linux-arm64-musl': 1.0.0-beta.29
+      '@rolldown/binding-linux-arm64-ohos': 1.0.0-beta.29
+      '@rolldown/binding-linux-x64-gnu': 1.0.0-beta.29
+      '@rolldown/binding-linux-x64-musl': 1.0.0-beta.29
+      '@rolldown/binding-wasm32-wasi': 1.0.0-beta.29
+      '@rolldown/binding-win32-arm64-msvc': 1.0.0-beta.29
+      '@rolldown/binding-win32-ia32-msvc': 1.0.0-beta.29
+      '@rolldown/binding-win32-x64-msvc': 1.0.0-beta.29
+
   rollup-license-plugin@3.0.2:
     dependencies:
       get-npm-tarball-url: 2.1.0
diff --git a/tests/legacy-cli/e2e.bzl b/tests/legacy-cli/e2e.bzl
index 2152f6dcd229..111cbd1ea023 100644
--- a/tests/legacy-cli/e2e.bzl
+++ b/tests/legacy-cli/e2e.bzl
@@ -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):
diff --git a/tests/legacy-cli/e2e/tests/build/chunk-optimizer.ts b/tests/legacy-cli/e2e/tests/build/chunk-optimizer.ts
index edc43729718e..366eaa7b4f3d 100644
--- a/tests/legacy-cli/e2e/tests/build/chunk-optimizer.ts
+++ b/tests/legacy-cli/e2e/tests/build/chunk-optimizer.ts
@@ -15,5 +15,5 @@ export default async function () {
   });
 
   const content = await readFile('dist/test-project/browser/main.js', 'utf-8');
-  assert.match(content, /\\u0275\\u0275defineComponent/);
+  assert.match(content, /ɵɵdefineComponent/u);
 }