class MyClass extends HTMLElement is required

[woldtwerk]

Usage of:

class TextField extends HTMLElement

is currently required.

I think this shouldn't be required.
Using @element text-field or

declare global {
    interface HTMLElementTagNameMap {
        "text-field": TextField;
    }
}

should be sufficient.

This would allow support for libraries like vue and svelte.

Is there a reason for this behavior?