export default function getExpectedToBeSingleDOM_Element(compoundParameter: Readonly<{
    selector: string;
    contextElement?: ParentNode | Readonly<{
        selector: string;
    }> | null;
}>): Element;
export default function getExpectedToBeSingleDOM_Element<DOM_ElementSubtype extends Element>(compoundParameter: Readonly<{
    selector: string;
    contextElement?: ParentNode | Readonly<{
        selector: string;
    }> | null;
    expectedDOM_ElementSubtype: new () => DOM_ElementSubtype;
}>): DOM_ElementSubtype;