import { ddpReducer } from './ddpReducer.js';
import { ddpReactiveDocument } from './ddpReactiveDocument.js';
import { ddpCollection } from './ddpCollection';
/**
 * A reactive collection class.
 */
export declare class ddpReactiveCollection<T> {
    private _skip;
    private _limit;
    private _sort;
    private _length;
    private _data;
    private _rawData;
    private _reducers;
    private _tickers;
    private _ones;
    private _first;
    private _syncFunc;
    private _changeHandler;
    private started;
    constructor(ddpCollectionInstance: ddpCollection<T>, settings?: {
        skip?: number;
        limit?: number;
        sort?: false | ((a: T, b: T) => number);
    }, filter?: boolean | ((value: T, index: number, array: T[]) => any));
    /**
   * Removes document from the local collection copies.
   */
    private _removeItem;
    /**
   * Adds document to local the collection this._rawData according to used sorting if specified.
   */
    private _smartUpdate;
    /**
   * Adds reducer.
   */
    private _activateReducer;
    /**
   * Adds reactive object.
   */
    private _activateReactiveObject;
    /**
   * Removes reducer.
   */
    private _deactivateReducer;
    /**
   * Removes reactive object.
   */
    private _deactivateReactiveObject;
    /**
   * Sends new object state for every associated reactive object.
   */
    _updateReactiveObjects(): void;
    /**
   * Updates ddpReactiveCollection settings.
   */
    settings(settings: {
        skip?: number;
        limit?: typeof Infinity;
        sort?: false | ((a: T, b: T) => number);
    }): this;
    /**
   * Updates the skip parameter only.
   */
    skip(n: number): this;
    /**
   * Updates the limit parameter only.
   */
    limit(n: number): this;
    /**
   * Stops reactivity. Also stops associated reactive objects.
   */
    stop(): void;
    /**
   * Starts reactivity. This method is being called on instance creation.
   * Also starts every associated reactive object.
   */
    start(): void;
    /**
   * Sorts local collection according to specified function.
   * Specified function form {@link https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/sort}.
   * @public
   * @param {Function} f - A function used for sorting.
   * @return {this}
   */
    sort(f: false | ((a: T, b: T) => number)): this;
    /**
   * Returns reactive local collection with applied sorting, skip and limit.
   * This returned array is being mutated within this class instance.
   * @public
   * @return {Array} - Local collection with applied sorting, skip and limit.
   */
    data(): Array<any>;
    /**
   * Runs a function every time a change occurs.
   * @param {Function} f - Function which recieves new collection at each change.
   * @public
   */
    onChange(f: {}): {
        start: () => void;
        stop: () => void;
    };
    /**
   * Maps reactive local collection to another reactive array.
   * Specified function form {@link https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/map}.
   * @public
   */
    map<T, R>(f: (arg0: T, arg1?: number, arg2?: T[]) => R): ddpReducer<[accumulator: any[], el: any, i: number, a: any[]], any[], never[], T_1>;
    /**
   * Reduces reactive local collection.
   * Specified function form {@link https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce}.
   */
    reduce(f: (args_0: any[], args_1: any, args_2: number, args_3: any[]) => unknown, initialValue: any): ddpReducer<[args_0: any[], args_1: any, args_2: number, args_3: any[]], unknown, any, T>;
    /**
   * Reactive length of the local collection.
   */
    count(): object;
    /**
   * Returns a reactive object which fields are always the same as the first object in the collection.
   */
    one(settings: {
        preserve: any;
    } | null): ddpReactiveDocument<T>;
}