Using Angular library in the application causes error-CodePudding

I have simple angular library project named "test" with only one component displaying material icon. I have built it (ng build test)

My library module:

@NgModule({
  declarations: [
    TestComponent
  ],
  imports: [
  ],
  exports: [
    TestComponent
  ]
})
export class TestModule { }

I want to test this library in my angular application. I have added library in app.module.ts:

import {TestComponent} from '../../dist/test'

and

@NgModule({
  imports: [
    TestComponent,

I'm using this component but unfortunatelly i get an error during ng serve command:

Error: ../../dist/test/lib/test.component.d.ts:3:22 - error NG6002: Appears in the NgModule.imports of AppModule, but could not be resolved to an NgModule class.

This likely means that the dependency which declares TestComponent has not been processed correctly by ngcc.

CodePudding user response：

You should import TestModule into AppModule, not TestComponent

CodePudding user response：

The correct way to do this is to define an Angular TestModule in your library and have it include TestComponent in its declarations array. Then, you can import that module in your AppModule.

Otherwise, you'd have to include TestComponent directly in AppModule declarations, which beats the purpose of having a library.