import type { SchemaSnapshot } from "../types.js";
/**
 * Deterministic sha256 of a schema snapshot. Reuses the canonical
 * (order-stable, byte-identical) serializer, so the hash is independent of
 * table/column ordering and depends only on the schema's content. Used to make
 * the committed snapshot tamper-evident (record the hash; a later hand-edit
 * changes it) and as the baseline marker's payload.
 */
export declare function snapshotChecksum(snapshot: SchemaSnapshot): string;
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