import { PropertyDeclaration } from 'lit';
export interface CustomPropertyConfig {
    type: unknown;
    required?: 'error' | 'warning';
    requiredMessage?: string;
}
export declare type PropertyConfig = PropertyDeclaration<unknown, unknown> & CustomPropertyConfig;
/**
 * https://developers.google.com/web/fundamentals/web-components/best-practices
 */
export declare function getDefaultOptions(propertyKey: string, options?: PropertyConfig): PropertyDeclaration;
export declare function requirePropertyCheck(protoOrDescriptor: any, name: string, options?: PropertyConfig): void;
/**
 * lit @property decorator with custom defaults specific to Clarity.
 * https://lit.dev/docs/components/properties/
 *
 * A property decorator which creates a LitElement property which reflects a
 * corresponding attribute value. A PropertyDeclaration may optionally be
 * supplied to configure property features.
 *
 * @ExportDecoratedItems
 */
export declare function property(options?: PropertyConfig): (protoOrDescriptor: any, name?: PropertyKey | undefined) => any;
/**
 * lit @state decorator with custom defaults specific to Clarity.
 *
 * This is used for communication between internal component properties
 * that are not exposed as part of the public component API.
 * https://lit.dev/docs/api/decorators/#state
 *
 * @ExportDecoratedItems
 */
export declare function state(options?: PropertyConfig): (protoOrDescriptor: any, name: string) => any;