/**
 * Recursively normalize a value into a canonical form.
 *
 * Object keys are sorted lexicographically. Arrays are preserved but their
 * elements are canonicalized. Primitives are returned unchanged.
 */
export declare function canonicalize(value: unknown): unknown;
/**
 * Produce a stable JSON string from a canonicalized value.
 *
 * The output is suitable for hashing, comparison, or persistence. It does
 * not depend on insertion order or runtime object layout.
 */
export declare function serializeCanonical(value: unknown, space?: string | number): string;
/**
 * Produce a deterministic SHA-256 hex digest of a canonical JSON value.
 */
export declare function hashCanonical(value: unknown): string;