ng-packagr function calling issue

Question

I have created a 3rd party component library using ng-packagr. We have referred to this article for creating the library.

https://medium.com/@nikolasleblanc/building-an-angular-4-component-library-with-the-angular-cli-and-ng-packagr-53b2ade0701e

We can import and render the components in the host application. But we are unable to call any function of the library in the host application. It is throwing the following error -

//node_modules/xxx.component.d.ts is missing from the TypeScript compilation. Please make sure it is in your tsconfig via the 'files' or 'include' property.

The missing file seems to be part of a third party library. TS files in published libraries are often a sign of a badly packaged library. Please open an issue in the library repository to alert its author and ask them to package the library using the Angular Package Format.

Is there any way to achieve the same using ng-packagr?

import {sampleComp} from "library";

@ViewChild(sampleComp) comp:sampleComp; comp.callFunction();