import { LitElement } from 'lit';
/**
 * USA Radio Web Component
 *
 * A simple, accessible USWDS radio button implementation as a custom element.
 * Uses official USWDS classes and styling with minimal custom code.
 *
 * @element usa-radio
 * @fires change - Dispatched when the radio state changes
 * @fires input - Dispatched when the radio state changes (for consistency)
 *
 * @see README.mdx - Complete API documentation, usage examples, and implementation notes
 * @see CHANGELOG.mdx - Component version history and breaking changes
 * @see TESTING.mdx - Testing documentation and coverage reports
 *
 * @uswds-css-reference https://github.com/uswds/uswds/tree/develop/packages/usa-radio/src/styles/_usa-radio.scss
 * @uswds-docs https://designsystem.digital.gov/components/radio/
 * @uswds-guidance https://designsystem.digital.gov/components/radio/#guidance
 * @uswds-accessibility https://designsystem.digital.gov/components/radio/#accessibility
 */
export declare class USARadio extends LitElement {
    static styles: import('lit').CSSResult;
    name: string;
    value: string;
    checked: boolean;
    label: string;
    description: string;
    error: string;
    disabled: boolean;
    required: boolean;
    tile: boolean;
    private radioElement?;
    private _radioId?;
    private usingUSWDSEnhancement;
    protected createRenderRoot(): HTMLElement;
    connectedCallback(): void;
    firstUpdated(): void;
    updated(_changedProperties: Map<string, any>): void;
    private updateRadioElement;
    private handleChange;
    private get radioId();
    private initializeUSWDSRadio;
    disconnectedCallback(): void;
    /**
     * Clean up USWDS module on component destruction
     */
    private cleanupUSWDS;
    private renderError;
    private renderLabelDescription;
    render(): import('lit-html').TemplateResult<1>;
}
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