/**
 * The options that are optionally specified for launching the Postgres database.
 */
export interface PostgresOptions {
    /** The location where the data should be persisted to. Defaults to: `./data/db` */
    databaseDir: string;
    /** The port where the Postgres database should be listening. Defaults to:
     *  `5432` */
    port: number;
    /** The username for logging into the Postgres database. Defaults to `postgres` */
    user: string;
    /** The password for logging into the Postgres database. Defaults to `password` */
    password: string;
    /** The authentication method to use when authenticating against Postgres.
     * Defaults to `password`  */
    authMethod: 'scram-sha-256' | 'password' | 'md5';
    /** Whether all data should be left in place when the database is shut down.
     * Defaults to `true`. */
    persistent: boolean;
    /** Pass any additional flags to the initdb process. You can find all
     * available flags here:
     * https://www.postgresql.org/docs/current/app-initdb.html. Flags should be
     * passed as a string array, e.g. `["--debug"]` or `["--locale=en-GB"]`
     *
     * Defaults to `[]`
     */
    initdbFlags: string[];
    /** Pass any additional flags to the postgres process. You can find all
     * available flags here:
     * https://www.postgresql.org/docs/current/app-postgres.html. Flags should
     * be passed as a string array, e.g. `["--debug"]` or `["--locale=en-GB"]`.
     *
     * Defaults to `[]`.  */
    postgresFlags: string[];
    /**
     * Postgres does not allow binaries to be run by root. In case you're
     * running in root-only enviroments, such as Docker containers, you may need
     * to create an extra user on your system in order to be able to call the binaries.
     *
     * NOTE: This WILL irreversibly modify your host system. The effects are
     * somewhat minor, but it's still recommend to only use this in Docker containers.
     *
     * Defaults to `false`.
     */
    createPostgresUser: boolean;
    /** Pass in a custom logging handler. This will relay and console messages
     * that are generated by the postgres and initdb processes. Defaults to
     * `console.log` */
    onLog: (message: string) => void;
    /** Pass in a custom error logging handler. This will catch and stderr
     * results coming in from the postgres and initdb processes. Defaults to
     * `console.error` */
    onError: (messageOrError: string | Error | unknown) => void;
}