Type errors in Components

When I try to make a component, I get some type errors that make it look like TS doesn't understand that CustomElement extends HTMLElement. For example in this code:

```
/* globals customElements */
import CustomElement from "@enhance/custom-element";

export default class TestComponent extends CustomElement {
constructor() {
super();
}

connectedCallback() {
this.addEventListener("change", () => {});
}

render({ html }) {
return html`

customElements.define("my-component", TestComponent);
```

I get an error on `addEventListener` and on `TestComponent` inside `customElements.define`

Errors are
`Property 'addEventListener' does not exist on type 'TestComponent'.`
```
Argument of type 'typeof TestComponent' is not assignable to parameter of type 'CustomElementConstructor'.
Type 'TestComponent' is missing the following properties from type 'HTMLElement': accessKey, accessKeyLabel, autocapitalize, dir, and 302 more.
```