/** A running ovnfs daemon. */
export interface Daemon {
    /** Admin socket, for `callSocket`. */
    socket: string;
    /** The folder its checkouts appear in, with its parent's symlinks resolved. */
    mount: string;
}
/** The daemon `command` manages, started unless it runs; a failure is retried on the next call. */
export declare function startDaemon(command: string): Promise<Daemon>;
/**
 * The daemon `command` manages if it runs, without starting one; undefined when
 * none answers, or rejects with `signal.reason` once `signal` aborts.
 */
export declare function runningDaemon(command: string, signal?: AbortSignal): Promise<Daemon | undefined>;
/** Forget `command`'s daemon after its socket stopped answering, so the next call asks the command again. */
export declare function forgetDaemon(command: string): void;