Angular 9 - The target entry-point has missing dependencies

Question

I have upgraded an Angular library to Angular 9. However when I attempt to use that library in another Angular 9 project I get an error like this:

The target entry-poi

Answer 1

ERROR in The target entry-point "primeng" has missing dependencies: - chart.js

ERROR in The target entry-point "primeng" has missing dependencies: - quill

ERROR in The target entry-point "primeng" has missing dependencies: - @fullcalendar/core


npm install --save chart.js
npm install --save quill
npm install --save @fullcalendar/core