Angular CLI can't find modules from locally installed library.

Versions

Angular CLI: 1.7.4
Node: 7.7.3
OS: darwin x64
Angular: 5.1.3
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cli: 1.7.4
@angular-devkit/build-optimizer: 0.3.2
@angular-devkit/core: 0.3.2
@angular-devkit/schematics: 0.3.2
@ngtools/json-schema: 1.2.0
@ngtools/webpack: 1.10.2
@schematics/angular: 0.3.2
@schematics/package-update: 0.3.2
typescript: 2.4.2
webpack: 3.11.0

Repro steps

• create a library
• pack it using npm pack
• install the tgz file using npm install --save path_to_tgz_file
• run client project

Observed behavior

ERROR in ./src/app/app.module.ts
Module not found: Error: Can't resolve '@my_library/sdk' in '/Users/eestein/Documents/dev/my_library/sdk-front/samples/src/app'
ERROR in ./src/app/app.component.ts
Module not found: Error: Can't resolve '@my_library/sdk' in '/Users/eestein/Documents/dev/my_library/sdk-front/samples/src/app'

Desired behavior

Angular CLI would recognize the local package.

Mention any other details that might be useful (optional)

This is what I have in my package.json of the client project:

"@my_library/sdk": "file:///Users/eestein/Documents/dev/my_library/sdk-front/library/my_library-sdk-1.0.0-alpha.2.tgz",

If I open both offending files (app.component.ts and app.module.ts) in VSCode no error is shown. It looks like VSCode can find it, but Angular CLI can’t.

This is my folder structure:

- library
   - library's code
   - *.tgz file
- samples
    - samples' code
    - package.json referencing the tgz file

[maxime1992]

@fedealu I’ve been struggling 2 hours with that and it’s finally working.

Maybe this will help you https://github.com/angular/angular-cli/issues/10665#issuecomment-500795466

[miguelleitevieira]

Hi, I created a library that export some classes used for datamodel. index.ts export * from ‘./lib/user’; export class User { id: number; email: string; name: string; lastAccess: Date; creationDate: Date; }; I made the build of the library and tried to use on my project, but i get an error: ERROR in src/app/@core/helpers/session.manager.ts(9,30): error TS2307: Cannot find module ‘library-data’. Someone know how to fix? I already remove and reinstall packages but did’nt work.

Did you find a solution? I face the same problem. If you fixed it can you please share the solution?

Yes, I created the library using Angular 6. Using that I could import library in Angular 7 projects too.