[Bug]: "contents" must be a string or a Uint8Array during ng build

[Bywdl]

Which @angular/* package(s) are the source of the bug?

compiler-cli, compiler

Is this a regression?

Yes

Description

When building a completely clean, freshly generated Angular 22 project (ng new with SSR enabled), the production build (ng build) fails consistently with a "contents" must be a string or a Uint8Array error.

The project is completely pristine with no custom configurations or other third-party packages.

Key Observations:

1. SSR Dependency: The error only occurs when Server-Side Rendering (SSR) is enabled during project generation. If I create the exact same clean project without SSR, the build succeeds.
2. Dev Server Works: The development server (ng serve) works perfectly without any issues; it only crashes during ng build.
3. Vite 8 / Rolldown Context: In earlier Angular 22 versions using Vite 7 (Rollup), this was not an issue. This freshly generated project uses the newer Vite 8 with the Rolldown bundler. It appears the angular-compiler plugin in esbuild fails to resolve or load these specific UI library modules during the SSR/prerendering build phase under this new architecture.

Please provide a link to a minimal reproduction of the bug

No response

Please provide the exception or error you saw

✘ [ERROR] "contents" must be a string or a Uint8Array [plugin angular-compiler]

    node_modules/esbuild/lib/main.js:534:29:
      534 │   if (mustBe !== null) throw new Error(`${quote(key)} must be ${m...
          ╵                                ^

    at getFlag (<workspace>/node_modules/esbuild/lib/main.js:534:30)
    at requestCallbacks.on-load (<workspace>/node_modules/esbuild/lib/main.js:1559:26)
    at async handleRequest (<workspace>/node_modules/esbuild/lib/main.js:909:11)

  This error came from the "onLoad" callback registered here:

    node_modules/@angular/build/src/tools/esbuild/angular/compiler-plugin.js:397:18:
      397 │             build.onLoad({ filter: /\.[cm]?js$/ }, (0, load_resul...
          ╵                   ~~~~~~

    at setup (<workspace>/node_modules/@angular/build/src/tools/esbuild/angular/compiler-plugin.js:397:19)
    at async handlePlugins (<workspace>/node_modules/esbuild/lib/main.js:1466:20)

  The plugin "angular-compiler" was triggered by this import

    src/app/shared/components/bs-reuse-tab/reuse-tab-context.service.ts:2:32:
      2 │ import { ComponentPortal } from '@angular/cdk/portal';
        ╵                                  ~~~~~~~~~~~~~~~~~~~~~


✘ [ERROR] "contents" must be a string or a Uint8Array [plugin angular-compiler]

    node_modules/esbuild/lib/main.js:534:29:
      534 │   if (mustBe !== null) throw new Error(`${quote(key)} must be ${m...
          ╵                                ^

    at getFlag (<workspace>/node_modules/esbuild/lib/main.js:534:30)
    at requestCallbacks.on-load (<workspace>/node_modules/esbuild/lib/main.js:1559:26)
    at async handleRequest (<workspace>/node_modules/esbuild/lib/main.js:909:11)

  This error came from the "onLoad" callback registered here:

    node_modules/@angular/build/src/tools/esbuild/angular/compiler-plugin.js:397:18:
      397 │             build.onLoad({ filter: /\.[cm]?js$/ }, (0, load_resul...
          ╵                   ~~~~~~

    at setup (<workspace>/node_modules/@angular/build/src/tools/esbuild/angular/compiler-plugin.js:397:19)
    at async handlePlugins (<workspace>/node_modules/esbuild/lib/main.js:1466:20)

  The plugin "angular-compiler" was triggered by this import

    src/app/shared/components/bs-reuse-tab/reuse-tab.component.ts:7:48:
      7 │ import { NzTabComponent, NzTabsComponent } from 'ng-zorro-antd/tabs';
        ╵                                                  ~~~~~~~~~~~~~~~~~~~~


✘ [ERROR] "contents" must be a string or a Uint8Array [plugin angular-compiler]

    node_modules/esbuild/lib/main.js:534:29:
      534 │   if (mustBe !== null) throw new Error(`${quote(key)} must be ${m...
          ╵                                ^

    at getFlag (<workspace>/node_modules/esbuild/lib/main.js:534:30)
    at requestCallbacks.on-load (<workspace>/node_modules/esbuild/lib/main.js:1559:26)
    at async handleRequest (<workspace>/node_modules/esbuild/lib/main.js:909:11)

Please provide the environment you discovered this bug in (run ng version)

**Environment:**
Angular CLI       : 22.1.3
Node.js           : 24.16.0
Package Manager   : npm 11.13.0
Operating System  : linux x64 (KylinOS, Kernel: 5.4.18.63-generic x86_64)

Anything else?

No response