import type { Change, Dialect, SchemaSnapshot } from "../types.js";
export interface DriftClassification {
    /** Modeled objects the DB is missing or has differently — actionable; fails the gate. */
    drift: Change[];
    /** Objects present in the DB but not the snapshot — informational; never dropped. */
    unmanaged: Change[];
}
export declare function classifyDrift(changes: Change[]): DriftClassification;
/**
 * Drift of a live DB (introspected into `actual`) against the committed snapshot.
 * Diffs with `expected = snapshot` so that objects only in the DB surface as
 * `drop-*` → classified `unmanaged`; objects the snapshot has but the DB lacks or
 * differs surface as create/add/change → classified `drift`.
 */
export declare function driftAgainstSnapshot(snapshot: SchemaSnapshot, actual: SchemaSnapshot, dialect?: Dialect): Promise<DriftClassification>;
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