Debugging Breakpoints not hit in mono repo with libraries

🐞 Bug report

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• extract-i18n
• run
• config
• help
• version
• doc

Is this a regression?

Yes, it was running before. Don’t know the exact version (angular 10)

Description

Can’t debug into library code with Visual Studio Code or Chrome Debugger. Breakpoints in the app-component.ts are hit but breakpoints in injected service don’t. In previous versions of angular it was possible.

Found an stackoverflow article with the same problem, but without a solution / answer: https://stackoverflow.com/q/67580325/5703479

🔬 Minimal Reproduction

Sample repo: https://github.com/cluen/ng-debug-library

> ng new ng-debug-library
> ng g library @lib-core/components
> ng b @lib-core/components --watch

add test-method to component.service.ts (e.g. console.log(1)) , 
inject and call test-method in app-component.ts

add breakpoint to app-component.ts method call, 
add breakpoint to component.service.ts content

in a different terminal
ng s

launch via visual studio code: F5 (launch.json will be autogenerated, edited content below)

{
  // Verwendet IntelliSense zum Ermitteln möglicher Attribute.
  // Zeigen Sie auf vorhandene Attribute, um die zugehörigen Beschreibungen anzuzeigen.
  // Weitere Informationen finden Sie unter https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [
    {
      "type": "pwa-chrome",
      "request": "launch",
      "name": "Launch Chrome against localhost",
      "url": "http://localhost:4200",
      "webRoot": "${workspaceFolder}",
      "sourceMaps": true,
    }
  ]
}

🌍 Your Environment

     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/
    

Angular CLI: 11.2.13
Node: 12.16.1
OS: win32 x64

Angular: 11.2.14
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router
Ivy Workspace: Yes

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1102.13
@angular-devkit/build-angular   0.1102.13
@angular-devkit/core            11.2.13
@angular-devkit/schematics      11.2.13
@angular/cli                    11.2.13
@schematics/angular             11.2.13
@schematics/update              0.1102.13
ng-packagr                      11.2.4
rxjs                            6.6.7
typescript                      4.1.5

Anything else relevant?

Chrome: Version 90.0.4430.212 Operating System: Windows Visual Studio Code Version: 1.56.2 Debugger for chrome: v4.12.12

[cluen]

@alan-agius4 Thank you very very much. You made my day. There were wrong / direct file imports in our libraries.

Found them with the following regex: ^import([a-zA-Z\{\} ]*)'projects

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