import type { Summary } from '@manehorizons/cadence-types';
/**
 * Deterministic JSON stringification: recursively sorts object keys before
 * calling `JSON.stringify`, so the result depends only on content, never on
 * key insertion order.
 */
export declare function canonicalStringify(value: unknown): string;
/**
 * Computes a sha256 content hash over a canonical stringification of
 * `summary`, EXCLUDING `summary.contentHash` itself — a field cannot hash
 * over its own prior value (that would make the digest depend on whether a
 * hash was already attached, and on what it previously said), so it is
 * always stripped before hashing regardless of whether it is present on the
 * input.
 */
export declare function computeSummaryContentHash(summary: Summary): {
    algorithm: 'sha256';
    value: string;
};
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