import { ScNet } from './sc_net';
import { ScAddr, ScType } from './sc_types';
export declare type CallbackAddElement = (addr: ScAddr) => Promise<void>;
export declare type CallbackRemoveElement = (addr: ScAddr) => Promise<void>;
export declare type CallbackInitialize = (addrs: ScAddr[]) => Promise<void>;
export declare class ScSet {
    /**
     * We store map that contains edge targets for each edge add.
     * In future remove and add events will provide target of edge, but right now they don't.
     * And when we receive event on item remove, edge already doesn't exist to get target.
     */
    private _elements;
    private _scNet;
    private _addr;
    private _onAdd;
    private _onRemove;
    private _onInitialize;
    private _filterType;
    private _evtAddElement;
    private _evtRemoveElement;
    constructor(scNet: ScNet, addr: ScAddr, onInitialize: CallbackInitialize, onAdd: CallbackAddElement, onRemove: CallbackRemoveElement, filterType?: ScType);
    Initialize(): Promise<void>;
    private ShouldAppend;
    private OnEventAddElement;
    private OnEventRemoveElement;
    private CallOnInitialize;
    private CallOnAdd;
    private CallOnRemove;
    private IterateExistingElements;
    /**
     * Add item to this set. If item alreay exist, then do nothing.
     * If element was added into set, then returns true; otherwise - false
     * @param el addr of set item to add
     */
    AddItem(el: ScAddr): Promise<boolean>;
}