import { Migration, MigrationRecord, Migrator, StmtMigration } from './index.js';
import { DatabaseAdapter } from '../electric/adapter.js';
import { QualifiedTablename } from '../util/index.js';
import { QueryBuilder } from './query-builder/index.js';
import { ForeignKeyChecks } from '../config/index.js';
export declare const SCHEMA_VSN_ERROR_MSG = "Local schema doesn't match server's. Clear local state through developer tools and retry connection manually. If error persists, re-generate the client. Check documentation (https://electric-sql.com/docs/reference/roadmap) to learn more.";
export declare abstract class BundleMigratorBase implements Migrator {
    queryBuilder: QueryBuilder;
    private namespace;
    adapter: DatabaseAdapter;
    migrations: StmtMigration[];
    readonly tableName = "_electric_migrations";
    readonly migrationsTable: QualifiedTablename;
    constructor(adapter: DatabaseAdapter, migrations: Migration[] | undefined, queryBuilder: QueryBuilder, namespace?: string);
    up(): Promise<number>;
    migrationsTableExists(): Promise<boolean>;
    queryApplied(): Promise<MigrationRecord[]>;
    querySchemaVersion(): Promise<string | undefined>;
    validateApplied(migrations: StmtMigration[], existing: MigrationRecord[]): Promise<StmtMigration[]>;
    apply({ statements, version }: StmtMigration, fkChecks?: ForeignKeyChecks): Promise<void>;
    /**
     * Applies the provided migration only if it has not yet been applied.
     * @param migration The migration to apply.
     * @returns A promise that resolves to a boolean
     *          that indicates if the migration was applied.
     */
    applyIfNotAlready(migration: StmtMigration, fkChecks?: ForeignKeyChecks): Promise<boolean>;
}
export declare class SqliteBundleMigrator extends BundleMigratorBase {
    constructor(adapter: DatabaseAdapter, migrations?: Migration[]);
}
export declare class PgBundleMigrator extends BundleMigratorBase {
    constructor(adapter: DatabaseAdapter, migrations?: Migration[]);
}