In Angular 14, how do I include a child component in a standalone component?

Question

I'm using Angular 14. I have a standalone component in which I want to include a child component from another module. The standalone component looks like

<div>
    <child-component></child-component>
</div>

and its service file is

@Component({
  selector: 'my-parent-component',
  templateUrl: './parent.component.html',
  standalone: true,
  imports: [
    MyModule
  ]
})
export class ParentComponent {
  ...
}

The child component is in another module -- MyModule. The my.module.ts file looks like

/* imports */

@NgModule({
  declarations: [
    ChildComponent
  ],
  imports: [
    ...
  ]
})
export class MyModule { 
  constructor(entityDefinitionService: EntityDefinitionService) {
    ...
  }
}

But my parent's HTML is giving me the error on the

    <child-component></child-component>    

line ...

'app-child-component' is not a known element:
1. If 'app-child-component' is an Angular component, then verify that it is included in the '@Component.imports' of this component.
2. If 'app-child-component' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@Component.schemas' of this component to suppress this message.

Answer 1

Try to export ChildComponent from the MyModule, so you can use it somewhere else:

@NgModule({
  declarations: [
    ChildComponent
  ],
  imports: [
    ...
  ],
  exports: [ ChildComponent ]
})
export class MyModule { 
  constructor(entityDefinitionService: EntityDefinitionService) {
    ...
  }
}