export function kebabCaseAttributes(constructor: any): {
    new (): {
        [x: string]: any;
    };
    [x: string]: any;
    createProperty(name: any, options: any): void;
};
export function classes(defn: any): string;
export function fclasses(definition: any): import("lit/async-directive.js").DirectiveResult<typeof import("lit/directives/class-map.js").ClassMapDirective>;
export function generateRandomId(): string;
