TS2345: Argument of type 'LightDomElement' is not assignable

[sashafirsov]

const el = await fixture<LightDomElement>(
            html`<light-dom-element>
                    <template>
                        <button>action</button>
                    </template>
                </light-dom-element>`
        );
expect($(el).$('button').txt()).to.equal('action');