import { LitElement, PropertyValues } from 'lit';
import { updateInternals } from './mixins/internals-attached.js';
declare const Radio_base: Constructor<import("./mixins/form-associated.js").FormAssociatedInterface> & Constructor<import("./mixins/internals-attached.js").InternalsAttachedInterface> & typeof LitElement;
export declare class Radio extends Radio_base {
    #private;
    value: string;
    checked: boolean;
    constructor();
    connectedCallback(): void;
    disconnectedCallback(): void;
    protected updated(changedProperties: PropertyValues<this>): void;
    [updateInternals](): void;
    formResetCallback(): void;
    formStateRestoreCallback(state: string | null): void;
}
export {};