export class GyldighetsRegistrerer extends Felt { oppdaterGyldighet(): void; componentDidUpdate(prevProps: any): void; render(): React.JSX.Element | null; } export namespace GyldighetsRegistrerer { namespace propTypes { const erGyldig: PropTypes.Validator; const gyldighet: PropTypes.Validator; } } import { Felt } from "./Felt"; import React from "react"; import PropTypes from "prop-types"; import { Gyldighet } from "./Gyldighet";