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"ng build" showing "ERROR in No NgModule metadata found for 'AppModule'" instead of detailed root errors

See original GitHub issue

🐞 Bug report

Command (mark with an `x`)

new
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config
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version
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Is this a regression?

Yes, the previous version in which this bug was not present was: ....

Description

In JIT build mode (AOT=false), “ng build” keeps reporting “ERROR in No NgModule metadata found for ‘AppModule’” instead of showing detailed root issues - Lambda not supported in ‘app-routing.module.ts’

🔬 Minimal Reproduction

Root issue - app-routing.module.ts

import { NgModule } from '@angular/core';
import { PreloadAllModules, RouterModule, Routes } from '@angular/router';

const routes: Routes = [
  {
    path: '',
    loadChildren: () => import('./tabs/tabs.module').then(m => m.TabsPageModule)
  }
];
@NgModule({
  imports: [
    RouterModule.forRoot(routes, { preloadingStrategy: PreloadAllModules })
  ],
  exports: [RouterModule]
})
export class AppRoutingModule { }

🔥 Exception or Error

The error caught during grabbing AppModule’s metadata. In the error details, it says the error will be reported, but it didn’t. Without debugging, I only see error 'ERROR in No NgModule metadata found for ‘AppModule’ reported by Angular CLI.

🌍 Your Environment



Angular CLI: 10.0.5
Node: 12.16.1
OS: win32 x64

Angular: 10.0.7
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.1000.5
@angular-devkit/build-angular     0.1000.5
@angular-devkit/build-optimizer   0.1000.5
@angular-devkit/build-webpack     0.1000.5
@angular-devkit/core              10.0.5
@angular-devkit/schematics        10.0.5
@angular/cli                      10.0.5
@ngtools/webpack                  10.0.5
@schematics/angular               10.0.5
@schematics/update                0.1000.5
rxjs                              6.6.2
typescript                        3.9.7
webpack                           4.43.0

Anything else relevant?

tsconfig.json


{
  "compileOnSave": false,
  "compilerOptions": {
    "charset": "utf8",
    "baseUrl": "./",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "module": "esnext",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noImplicitAny": true,
    "noImplicitThis": true,
    "strict": true,
    "target": "es2015",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2018",
      "dom"
    ],
    "paths": {
      "app/*": [
        "src/app/*"
      ]
    }
  },
  "angularCompilerOptions": {
    "fullTemplateTypeCheck": true,
    "preserveWhitespaces": false,
    "strictMetadataEmit": true,
    "strictInjectionParameters": true,
    "strictTemplates": true
  }
}