/**
 * Deterministic JSON serializer: sorts object keys lexicographically at every
 * depth so structurally-equivalent objects produce identical strings. Array
 * order is preserved (arrays are semantically ordered).
 *
 * Used by {@link sha256Hex} to fingerprint a derived JSON Schema for
 * hash-based skip on persisted-schema writes.
 *
 * @module
 */
export declare function canonicalize(value: unknown): string;