I am trying to install ng2-completer. It work just fine when I run ng serve. However, my ng build --prod. I get following error
Module not found: Error: Can't resolve 'ng2-completer/ng2-completer.module' in 'folder_path/front/src/app'
My package-lock.json is as follows:
"ng2-completer": {
            "version": "2.0.6",
            "resolved": "https://registry.npmjs.org/ng2-completer/-/ng2-completer-2.0.6.tgz",
            "integrity": "sha1-IeW3sZft5jLYeDbMzxOSEWda2gs="
        },
I have tried importing package following ways:
import { Ng2CompleterModule } from '../../../../node_modules/ng2-completer/';
or
import { Ng2CompleterModule } from 'ng2-completer/';
I still get following error:
Module not found: Error: Can't resolve 'ng2-completer/ng2-completer.module' in '/User/test/Document/front/src/app'
any help is appreciated, thanks