inter library dependency inside a workspace: Cannot find module 'library1'

[gbharathkumar]

Versions

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Angular CLI: 6.0.0
Node: 8.11.1
OS: win32 x64
Angular:
...

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.6.0
@angular-devkit/core         0.6.0
@angular-devkit/schematics   0.6.0
@schematics/angular          0.6.0
@schematics/update           0.6.0
rxjs                         6.1.0
typescript                   2.7.2

Repro steps

• create a new angular 6 workspace with an application
• add two libraries named library1, library2
• refer library1 in library2 package.
• compile library1 using ng build --project=library1
• compile library2 using ng build --project=library2

Observed behavior

* getting exception projects/library2/src/lib/library2.module.ts(3,36): error TS2307: Cannot find module 'library1'.

Desired behavior

Mention any other details that might be useful (optional)

1. setting the output of library1 to node_modules doesn't work as ng_packagr is not generating the public_api.ts file if the dest path is node_modules.
2. even adding paths to tsconfig.lib.json doesn't get reflected, neither does the paths in the root tsconfig.json

[wulfsberg]

Duplicate of #10665?
While it would be nice to have it working out of the box, I got my project working the same way @aitboudad suggests in #10665 (comment), i.e. adding paths to the other library's dist output.

You'd need something like

"paths": {
  "library1": [
	"../../../dist/library1"
  ]
}

in the compilerOptions of library2's tsconfig.lib.json

[clydin]

Duplicate of #10665

[playground]

I have the same issue with using npm @scope.

@scope/library1
@scope/library2

ng build @scope/library1
in library2, import {} from '@scope/library1', vscode cannot find it.

[playground]

It's working now after npm install @scope/library1 in project library1.

[wulfsberg]

Likely due to ng-packagr/ng-packagr#862, which obsoletes the workaround with paths in tsconfig.lib.json.

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