import { Store, Actions, ActionDirector } from '@ngxs/store';
import { Observable } from 'rxjs';
import { NgxsFirestoreModuleOptions } from './tokens';
import * as i0 from "@angular/core";
interface ActionTypeDef<T> {
    type: string;
    new (...args: any): T;
}
export declare class NgxsFirestoreConnect {
    private store;
    private actions;
    private actionDirector;
    private options;
    private activeFirestoreConnections;
    private actionsPending;
    constructor(store: Store, actions: Actions, actionDirector: ActionDirector, options: NgxsFirestoreModuleOptions);
    /**
     * Connect a query that will dispatch a `StreamEmitted` action on each emission.
     *
     * @param actionType Action to connect with
     * @param opts.to Firestore Query to connect with
     * @param opts.trackBy used to allow multiple connections for a same action, and Disconnect them individually
     * @param opts.connectedActionFinishesOn complete connected action on first emit or stream completed
     * @param opts.cancelPrevious cancel previous connected action,
     * - false: will NOT cancel connected action, and subsequent dispatches will be skipped
     * - true : will cancel previous connected action, if used combined with trackBy will cancel stream with same id
     * - 'cancel-if-track-by-changed': will cancel previous connected action only when trackBy changed
     */
    connect<T>(actionType: ActionTypeDef<T>, opts: {
        to: (action: T) => Observable<any>;
        trackBy?: (action: T) => string;
        connectedActionFinishesOn?: 'FirstEmit' | 'StreamCompleted';
        cancelPrevious?: boolean | 'cancel-if-track-by-changed';
    }): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgxsFirestoreConnect, [null, null, null, { optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<NgxsFirestoreConnect>;
}
export {};