IVY: Value at position 13 in the NgModule.imports of AppModule is not a reference

[spock123]

🐞 bug report

Angular 9.0.0-next.0

Is this a regression?

Yes, works fine in Angular 8.2.0 without IVY enabled

Description

Enabling IVY, upgrading to 9.0.0-next.0 gives errors.

ERROR in app/modules/paymentcard-bizz/paymentcard-bizz.module.ts:41:17 - error TS-991010: Value at position 0 in the NgModule.declarations of PaymentcardBizzModule is not a reference: [object Object]

41   declarations: [...components,...views],
                   ~~~~~~~~~~~~~~~~~~~~~~~~
app/app.module.ts:68:12 - error TS-991010: Value at position 13 in the NgModule.imports of AppModule is not a reference: [object Object]

 68   imports: [
               ~
 69     BrowserModule,
    ~~~~~~~~~~~~~~~~~~
... 
 98     })
    ~~~~~~
 99   ],

🌍 Your Environment

Angular Version:

Angular CLI: 8.3.0-next.0
Node: 12.2.0
OS: darwin x64
Angular: 9.0.0-next.0
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router, service-worker

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.803.0-next.0
@angular-devkit/build-angular     0.803.0-next.0
@angular-devkit/build-optimizer   0.803.0-next.0
@angular-devkit/build-webpack     0.803.0-next.0
@angular-devkit/core              8.3.0-next.0
@angular-devkit/schematics        8.3.0-next.0
@angular/cdk                      8.1.2
@angular/cli                      8.3.0-next.0
@angular/material                 8.1.2
@angular/pwa                      0.803.0-next.0
@ngtools/webpack                  8.3.0-next.0
@schematics/angular               8.3.0-next.0
@schematics/update                0.803.0-next.0
rxjs                              6.5.2
typescript                        3.5.3
webpack                           4.38.0

Anything else relevant?

Tsconfig.json:

{
  "compileOnSave": false,
  "angularCompilerOptions": {
    "enableIvy": true
  },
  "compilerOptions": {
    "baseUrl": "./src",
    "importHelpers": true,
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    //"module": "es2015",
    "module": "esnext",
    "moduleResolution": "node",
    "noImplicitAny": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "skipLibCheck": true,
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2018",
      "dom"
    ],
    "paths": {
      "@store/*": ["app/store/*", "app/store"],
      "@store": ["app/store/*", "app/store"],
      "@modules/*": ["app/modules/*", "app/modules"],
      "@modules": ["app/modules/*", "app/modules"],
      "@main/*": ["app/main/*", "app/main"],
      "@main": ["app/main/*", "app/main"],
      "@environment": ["environments/environment"],
      "@lib/*": ["app/lib/*", "app/lib"],
      "@lib": ["app/lib/*", "app/lib"],
      "@iticket-business/*": [ "app/modules/iticket-business/*", "app/modules/iticket-business"]
    }
  }
}

Seamingly nothing wrong with code, imports are legit.
Works fine without IVY
Can it be because I'm using paths in tsconfig?

[spock123]

Could it be related to this?
angular/angular-cli#14594

I use tsconfig paths heavily to make it easier to import stuff

[spock123]

Tried same code with Angular 9.0.0-next.2

Getting following error during "ng serve":

ERROR in Attempted to get members of a non-class: "class PerMessageDeflate

[spock123]

We can close this case.
I had a file with .js extension instead of .ts.

Pretty stupid, but there was no error in non-Ivy, but Ivy complained (rightfully so),

I'll close this, but for anyone else getting this error, check your file extensions carefully.

[TheYellowThorn]

We are still getting this issue as well when importing an internal library while running Angular 9:

Value at position 3 in the NgModule.imports of AppModule is not a reference: [object Object]

Angular CLI: 9.0.0-next.3
Node: 10.11.0
OS: darwin x64
Angular: 9.0.0-next.5
... core

Package Version

@angular-devkit/architect 0.802.1
@angular-devkit/build-angular 0.802.1
@angular-devkit/build-optimizer 0.802.1
@angular-devkit/build-webpack 0.802.1
@angular-devkit/core 8.2.1
@angular-devkit/schematics 9.0.0-next.3
@angular/animation 4.0.0-beta.8
@angular/animations 8.2.5
@angular/cdk 8.1.4
@angular/cli 9.0.0-next.3
@angular/common 8.2.2
@angular/compiler 8.2.2
@angular/compiler-cli 8.2.2
@angular/forms 8.2.2
@angular/http 7.2.15
@angular/language-service 8.2.2
@angular/material 8.1.4
@angular/platform-browser 8.2.2
@angular/platform-browser-dynamic 8.2.2
@angular/router 8.2.2
@ngtools/json-schema 1.2.0
@ngtools/webpack 8.2.1
@schematics/angular 9.0.0-next.3
@schematics/package-update 0.3.2
@schematics/update 0.900.0-next.3
rxjs 6.5.2
typescript 3.5.3
webpack 4.38.0

[alxhub]

@TheYellowThorn do you have a small reproduction repo you can share with us?

[angular-automatic-lock-bot]

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