角度构建失败，因为它包含另一个角度项目中的组件

Question

When I run ng build project1 --prod the build fails with the error message

ERROR in : Cannot determine the module for class MyComponent in .../project2/app/my.component.ts! Add MyComponent to the NgModule to fix it. .

This seems pretty straight forward, BUT the mentioned Component is not part of the current Angular project. I defined two projects inside my angular.json and they are not dependent of each other (project1 & project2). I've got a separate shared module which both projects import and use.

The error appeared when I moved a component from project2 to my shared module. My project2 builds fine and the moved components also work fine. ng serve project1 works without problems. But for some reason, my first project now depends on most components from my second project for no reason. I already searched all my imports for the file without success. Maybe it's related to the fact that the components from project2 extend a component from the shared module?

So is there any way to see where angular thinks it needs this? For example, I see the main chuck was build before - what is angular building when it fails?

Can I exclude this somehow ( tsconfig.app.json exclude didn't work)?

Answer 1

I found an unused import which itself imported most of the other projects components.

But if anyone still knows a way to see which file caused this kind of error I would still appreciate it and accept it as the final answer. I had to look into every single file to find the wrong import.