import { SyncTable } from "@cocalc/sync/table";
import { TypedMap } from "@cocalc/frontend/app-framework";
import { DirectoryListingEntry } from "@cocalc/util/types";
interface Listing {
    path: string;
    project_id?: string;
    listing?: DirectoryListingEntry[];
    time?: Date;
    interest?: Date;
    missing?: number;
    error?: string;
    deleted?: string[];
}
export declare type ImmutableListing = TypedMap<Listing>;
declare class ListingsTable {
    private readonly table?;
    private logger;
    private project_id;
    private watchers;
    constructor(table: SyncTable, logger: any, project_id: string);
    close(): void;
    private setup_watchers;
    private remove_stale_watchers;
    private log;
    private is_ready;
    private get_table;
    set(obj: Listing): Promise<void>;
    get(path: string): ImmutableListing | undefined;
    private handle_change_event;
    private handle_change;
    private ensure_watching;
    private compute_listing;
    private start_watching;
    private stop_watching;
    private trim_old_paths;
    private remove_path;
    set_deleted(filename: string): Promise<void>;
    is_deleted(filename: string): boolean;
}
export declare function register_listings_table(table: SyncTable, logger: any, project_id: string): void;
export declare function get_listings_table(): ListingsTable | undefined;
export {};