export { embeddedDatabaseSocketPath } from './functions.embeddeddb.js';
export interface IEmbeddedControllerDatabaseOptions {
    /** directory holding the smartdb storage files; its hash names the unix socket */
    dataDirectory: string;
    /** previous installed default, logically migrated only while its engine is stopped */
    legacyDataDirectory?: string;
}
/**
 * The controller's embedded database engine: a @push.rocks/smartdb
 * LocalSmartDb over a unix socket in the AGL sockets directory. The socket
 * path is deterministic so a second controller process (e.g. the
 * temp-password CLI) attaches to the running daemon's engine instead of
 * opening the storage files a second time; only the process that booted
 * the engine stops it.
 */
export declare class EmbeddedControllerDatabase {
    private readonly options;
    private localDb?;
    private connectionUri?;
    private startPromise?;
    private migrationRunner?;
    private resolvedSocketPath?;
    constructor(options: IEmbeddedControllerDatabaseOptions);
    get socketPath(): string;
    get ownsEngine(): boolean;
    /** Starts (or attaches to) the engine and returns the smartdata-ready URI. */
    start(): Promise<string>;
    private startOnce;
    stop(): Promise<void>;
    private isSocketListening;
}