import { RanElement } from '@/utils/index';
export declare class Form extends RanElement {
    _form: HTMLFormElement;
    _shadowDom: ShadowRoot;
    static get observedAttributes(): string[];
    constructor();
    get value(): string | null;
    set value(value: string | null);
    get sheet(): string;
    set sheet(value: string);
    handlerExternalCss: () => void;
    connectedCallback(): void;
    attributeChangedCallback(name: string, oldValue: string, newValue: string): void;
}
export default Form;