import Database from "better-sqlite3";
import { Config, Context, Effect, Layer } from "effect";
import { type OperationError } from "../errors/index.js";
export interface SqliteOptions {
    /** File path of the database, or ":memory:" for an in-process database. */
    readonly path: string;
}
declare const Sqlite_base: Context.ServiceClass<Sqlite, "@micthiesen/mitools/Sqlite", {
    readonly db: Database.Database;
    /** Runs `fn` inside one write transaction; nested statements share the connection. */
    readonly transaction: <A>(operation: string, fn: (db: Database.Database) => A) => Effect.Effect<A, OperationError>;
}>;
/**
 * One better-sqlite3 connection (WAL mode). The docstore, `Entity` and `Table`
 * all share it. Build it once per process with `Sqlite.layer(...)` and let the
 * layer's scope close the connection.
 */
export declare class Sqlite extends Sqlite_base {
    /** Opens the database at `path`; closed when the layer's scope closes. */
    static readonly layer: (options: SqliteOptions) => Layer.Layer<Sqlite, OperationError>;
    /**
     * Reads `DB_NAME` (default `docstore.db`) and `DOCKERIZED` (default false)
     * from the configured `ConfigProvider`; a dockerized process stores the
     * file under `/data/`.
     */
    static readonly layerConfig: Layer.Layer<Sqlite, OperationError | Config.ConfigError>;
    /** An in-memory database, for tests. */
    static readonly layerMemory: Layer.Layer<Sqlite, OperationError>;
}
export {};