import type { ComplexAttributeConverter } from 'lit';
/**
 * Creates a JSON converter for Lit complex attributes.
 * Allows setting complex objects (source, config) as JSON strings in HTML attributes.
 *
 * @returns A ComplexAttributeConverter for use with Lit @property decorator
 *
 * @example
 * ```typescript
 * @property({ converter: jsonConverter() }) config?: Config;
 * ```
 */
export declare function jsonConverter<T = unknown>(): ComplexAttributeConverter<T | undefined>;
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