import { Subject } from "rxjs";
import { DataRequest } from "./data-request";
import { DataResult } from "./data-result";
export declare abstract class DataSource<T = any> {
    protected _loading: boolean;
    private _data;
    private _totallRecords?;
    protected changeSubject: Subject<DataResult<any>>;
    readonly change: import("rxjs").Observable<DataResult<any>>;
    constructor();
    get loading(): boolean;
    protected set loading(value: boolean);
    get data(): any[] | undefined;
    protected set data(value: any[] | undefined);
    get totallRecords(): number | undefined;
    protected set totallRecords(value: number | undefined);
    remove(item: any): void;
    abstract load(request: DataRequest): void;
}