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Scoped library paths cannot be resolved #10620

Closed
@msterba

Description

@msterba

See also #10172
The generated path aliases seem not right.

Versions

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    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
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Angular CLI: 6.0.0
Node: 10.0.0
OS: linux x64
Angular: 6.0.0
... animations, cli, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

Package                            Version
------------------------------------------------------------
@angular-devkit/architect          0.6.0
@angular-devkit/build-angular      0.6.0
@angular-devkit/build-ng-packagr   0.6.0
@angular-devkit/build-optimizer    0.6.0
@angular-devkit/core               0.6.0
@angular-devkit/schematics         0.6.0
@ngtools/json-schema               1.1.0
@ngtools/webpack                   6.0.0
@schematics/angular                0.6.0
@schematics/update                 0.6.0
ng-packagr                         3.0.0-rc.2
rxjs                               6.1.0
typescript                         2.7.2
webpack                            4.6.0

Repro steps

ng new my-project
cd my-project
ng generate library foo
ng generate library @msterba/bar
ng build foo
ng build @msterba/bar

Now try to import BarModule into the app.

Observed behavior

The libraries are compiled correctly but the resulting directory structure in dist is not reflected by the paths definitions in tsconfig.json:

directory structure:

dist
+- foo
+- @msterba
   +- bar


tsconfig.json:

"paths": {
  "foo": [
    "dist/foo"
  ],
  "bar": [
    "dist/bar"
  ]
}

BarModule cannot be imported.

// src/app/app.module.ts:
import { FooModule } from 'foo'; // ok
import { BarModule } from '@msterba/bar'; // [ts] Cannot find module '@msterba/bar'.

// console:
$ ng build

ERROR in src/app/app.module.ts(8,27): error TS2307: Cannot find module '@msterba/bar'.

Desired behavior

Add scopes to the paths definitions.

"paths": {
  "foo": [
    "dist/foo"
  ],
  "@msterba/bar": [
    "dist/@msterba/bar"
  ]
}

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