import { type Envelope } from './types.js';
/**
 * Stable canonical JSON for envelope hashing per spec v2.3 section 4.4.
 *
 * Rules:
 * - Exclude `envelope_hash` and `signature` from the hash input.
 * - Sort object keys lexicographically at every nesting level.
 * - Emit no whitespace.
 * - Normalize string values to NFC.
 */
export declare function canonicalEnvelopeJson(envelope: Envelope): string;
export declare function canonicalJson(value: unknown): string;
export declare function computeEnvelopeHash(envelope: Envelope): string;
//# sourceMappingURL=canonical.d.ts.map