import { CustomElement } from "../custom-element.js";
import { Constructor } from "../utils/dedupe-mixin.js";
interface FormAssociated extends HTMLElement {
  /** @internal */
  elementInternals: ElementInternals;
  name: string;
  value: string | number | string[];
  disabled: boolean;
  readonly: boolean;
  required: boolean;
  get form(): HTMLFormElement | null;
  get validity(): ValidityState;
  get validationMessage(): string;
  get willValidate(): boolean;
  /**
   * Clears the value of the form-associated element.
   */
  clear(): void;
  /**
   * The checkValidity() method of the ElementInternals interface checks if the element meets any constraint validation rules applied to it.
   *
   * @see {@link https://developer.mozilla.org/docs/Web/API/ElementInternals/checkValidity | `ElementInternals.checkValidity()`} method.
   */
  checkValidity(): boolean;
  /**
   * Reports the validity of the element.
   * @see {@link https://developer.mozilla.org/docs/Web/API/ElementInternals/reportValidity | `ElementInternals.reportValidity()`} method.
   */
  reportValidity(): void;
  /**
   * Sets the validity of the element, and optionally the error message and element to which the error applies.
   *
   * @see {@link https://developer.mozilla.org/docs/Web/API/ElementInternals/setValidity | `ElementInternals.setValidity()`} method.
   */
  setValidity(flags?: ValidityStateFlags, target?: HTMLElement): void;
  /** @internal */
  toFormValue(): string | File | FormData | null;
}
declare const FormAssociated: <T extends Constructor<CustomElement>>(superClass: T) => Constructor<FormAssociated> & T;
export { FormAssociated };