StencilJS - TypeScript - Cannot find name

Stencil
1

I have the following project:

which contains the following two files:

custom-container.tsx

import { Component, Element, State } from '@stencil/core';

@Component({
	tag: 'custom-container',
	styleUrl: 'custom-container.scss',
})
export class WebComponent {
	@Element() el!: HTMLStencilElement;
	@State() label: String = '<empty>';
	componentDidLoad() {
		document.querySelector('.button_get_anchor').addEventListener('click', () => {
			let position = '<unset>';
			position = this.el.querySelector('custom-details').getDefaultKnobEPosition();
			this.label = position;
		});
	}
	render() {
		return [
			<div class="label">{this.label}</div>,
			<custom-details></custom-details>,
			<div>
				<button class="button_get_anchor">Get Anchor</button>
			</div>
		];
	}
}

custom-details.tsx

import { Component, Method } from '@stencil/core';

@Component({
    tag: 'custom-details',
    styleUrl: 'custom-details.scss',
})
export class WebComponent {
    render() {
        return [
            <div class="details">This is the "custom-details"</div>
        ];
    }
    @Method()
    sayHelloWorldOnConsole() {
        console.log('Hello World!');
    }
    //*
    @Method()
    getDefaultKnobEPosition(): Anchor {
        return Anchor.Left;
    }
    //*/
}
export enum Anchor {
    Left = 'left',
    Center = 'center',
    Right = 'right',
}

My problem is: When I run:

$ npm start --es5

I get the following error:

[ ERROR ]  TypeScript: ./stencil-cannot-find-name/src/components.d.ts:66:39
           Cannot find name 'Anchor'.

     L65:  interface CustomDetails {
     L66:    'getDefaultKnobEPosition': () => Anchor;
     L67:    'sayHelloWorldOnConsole': () => void;

[21:56.0]  dev server: http://localhost:3333/
[21:56.0]  build failed, watching for changes... in
           15.59 s

as you can see on the following image:

enter image description here

Also, even before compiling with npm, on the Visual Studio Code I get notified about that issue, as you can see on the following image:

enter image description here

Here is the line that is causing the problem:

where that file above is auto-generated, so I cannot modify it in order to fix the issue.

Any idea on how to solve this?

Thanks!