import { Settings } from 'graphile-migrate';
import { CompareMigrationHashesErrorCallback } from './types';
/**
 * Compares hashes from migration files with migration records from the database.
 * Execution order:
 * 1. Load all migration files from the `committed` folder.
 * 2. Extract migration number, hash, and previous hash from each migration file.
 * 3. Load all migration records from `graphile_migrate.migrations` table.
 * 4. Compare file records with records from the database:
 *    - Checks if migration history has more records than committed migration files.
 *    - Checks for mismatches in hashes. A mismatch is considered a file record
 *      where the migration file number exists in the database, but the
 *      hash(or previous hash) recorded in the database doesn't match hash(or
 *      previous hash) in file migration.
 */
export declare const compareMigrationHashes: (settings: Settings, errorCallback?: CompareMigrationHashesErrorCallback) => Promise<void>;
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