Angular-cli: ng build --prod <library name> fails

[marius-oprea]

Bug Report or Feature Request (mark with an x)

- [x ] bug report -> please search issues before submitting
- [ ] feature request

Command (mark with an x)

- [ ] new
- [x ] build
- [ ] serve
- [ ] test
- [ ] e2e
- [ ] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc

Versions

node 10.10.0
npm 6.4.1
ng 6.1.7

Angular CLI: 6.2.1
Node: 10.10.0
OS: win32 x64
Angular:
...

Package Version

@angular-devkit/architect 0.8.1
@angular-devkit/core 0.8.1
@angular-devkit/schematics 0.8.1
@schematics/angular 0.8.1
@schematics/update 0.8.1
rxjs 6.2.2
typescript 2.9.2

Repro steps

Create a new angular project using ng new test1
Create a new library inside the project using new g library lib-test
npm i
ng build --prod lib-test

The log given by the failure

Configuration 'production' could not be found in project '...'.
Error: Configuration 'production' could not be found in project '...'.
at Architect.getBuilderConfiguration (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\architect\src\architect.js:102:23)
at MergeMapSubscriber._loadWorkspaceAndArchitect.pipe.operators_1.concatMap [as project] (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\models\architect-command.js:70:55)
at MergeMapSubscriber._tryNext (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:65:27)
at MergeMapSubscriber._next (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:55:18)
at MergeMapSubscriber.Subscriber.next (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Subscriber.js:64:18)
at TapSubscriber._next (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\tap.js:62:26)
at TapSubscriber.Subscriber.next (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Subscriber.js:64:18)
at MergeMapSubscriber.notifyNext (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:84:26)
at InnerSubscriber._next (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\InnerSubscriber.js:25:21)
at InnerSubscriber.Subscriber.next (C:\Users...\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Subscriber.js:64:18)

Desired functionality

if I use ng build lib-test , is working very well.

in the angular.json file, this version of @angular/cli, do not added automatically the neccesary :
"configurations": {
"production": {
"devServerTarget": "test1:serve:production"
}
}

and did not created the file: ng-packagr.prod.json

If I add those manually, the ng build --prod lib-test command, works just fine. So the issue is the fact that the above file and code is missing.

Mention any other details that might be useful

[alan-agius4]

Angular CLI no longer creates a production for libraries, as there is a single ng-packagr configuration. Since previously two different confiurations were dist folder was kept for none --prod builds.

Unless you create a production configuration you shouldn't be needing --prod for libraries.

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