Angular compiler option "flatModuleIndex" requires one and only one .ts file in the "files" field about angular-cli-lib-example HOT 2 CLOSED

More diagnostics, I have a project that worked using "ng-packagr": "2.0.0-rc.13", and I tried just copying that project and updating to "ng-packagr": "^3.0.0-rc.2". That breaks it - which I guess shouldn't be a surprise considering the major version rolling - but it's not clear to me what changed about the configuration between 2 and 3. Any pointers?

from angular-cli-lib-example.

I fixed it but frankly I'm not sure exactly what I did. I think I had carats in my package.json file associated with @angular packages and it maybe was non-compliant with the expectations of the angular_cli embedded in this project or something? Anyway, I'll close it.

from angular-cli-lib-example.