/** Realm-neutral HTML-element brand check. Hostile and structural lookalikes fail closed. */
export declare function isHtmlElement(value:unknown):value is HTMLElement;
/** Realm-neutral SVG-element brand check, including elements retained across document adoption. */
export declare function isSvgElement(value:unknown):value is SVGElement;
/** Returns the rendered image that activates an HTML image-map container or area. */
export declare function imageMapImageFor(element:Element,options?:{consume?:()=>boolean;maxNodes?:number;}):HTMLImageElement|null;
/** Realm-neutral native Date brand check. Invalid Dates are still Dates; callers validate time. */
export declare function isDateObject(value:unknown):value is Date;