bug: 'Namespace components.Components' has no exported member 'IonAccordion'

Prerequisites

[X] I have read the Contributing Guidelines.
[X] I agree to follow the Code of Conduct.
[X] I have searched for existing issues that already report this problem, without success.

Stencil Version

3.4.2 and 4.2.0

Stencil Framework Output Target

Angular

Stencil Framework Output Target Version

0.8.1

Current Behavior

@stencil/core 3.4.2 and 4.2.0
@stencil/angular-output-target: ^0.8.1

Building a custom-component which uses @ionic/core to render some components:

In stencil.config.ts I've defined namespace: 'CustomComonentNs' but anyway the components.d.ts generates:
```
export namespace Components {
[...]
}
```

If this is fixed, @stencil/angular-output-target should also import and generate components.ts from corrected namespace.

The generated component.ts includes all components from @ionic/core, it does not filter the components really used. In example, the stencil-library only uses ion-content in my-component (see https://github.com/miqmago/custom-library-ng-bug/blob/master/stencil-library/src/components/my-component/my-component.tsx#L30) but the generated angular-workspace/projects/component-library/src/lib/stencil-generated/component.ts contains:

import { Components } from 'custom-component';

[...]

@ProxyCmp({
  inputs: ['disabled', 'readonly', 'toggleIcon', 'toggleIconSlot', 'value']
})
@Component({
  selector: 'ion-accordion',
  changeDetection: ChangeDetectionStrategy.OnPush,
  template: '<ng-content></ng-content>',
  // eslint-disable-next-line @angular-eslint/no-inputs-metadata-property
  inputs: ['disabled', 'readonly', 'toggleIcon', 'toggleIconSlot', 'value'],
})
export class IonAccordion {
  protected el: HTMLElement;
  constructor(c: ChangeDetectorRef, r: ElementRef, protected z: NgZone) {
    c.detach();
    this.el = r.nativeElement;
  }
}

export declare interface IonAccordion extends Components.IonAccordion {}

[...]

It also imports Components from components.d.ts, but as stated in https://github.com/ionic-team/stencil-ds-output-targets/issues/232, we should declare all the components in interface.d.ts. This is quite difficult considering that components.ts includes all the components from @ionic/core, so it makes really difficult to maintain. Would be easier if output-target generator would exclude unused components. Anyway I imagine that the problem is with any external library or web component that would define it's custom-elements, they should be re-exported as described by @sean-perkins in mentioned issue.

If the step 3 is not done, angular library will not compile, complaining about:

projects/component-library/src/lib/stencil-generated/components.ts:278:58 - error TS2694: Namespace '"/Volumes/projects/stencil-library/dist/types/components".Components' has no exported member 'IonAccordion'.

278 export declare interface IonAccordion extends Components.IonAccordion {}

Expected Behavior

namespace correctly named as CustomComonentNs
only the components from any external library used by stencil-library should be exported
provide a way to automatically re-export definitions from external libraries (@ionic/core, ionicons, ...) without having to manually import and re-export them.

Right now the solution I've found is to manually rename the namespace, import { Components as IonComponents } from '@ionic/core'; and replace Components by CustomComponentsNs and IonComponents, but this is done manually and it's very error prone.

Steps to Reproduce

Follow all the steps in https://stenciljs.com/docs/angular

In custom-component install @ionic/core and use it in some component.

Compile the custom-component to angular target.

Code Reproduction URL

https://github.com/miqmago/custom-library-ng-bug

Additional Information

No response

ionic-team / stencil-ds-output-targets