import { DataSource } from '@angular/cdk/table';
import { Observable, Subject, Subscription } from 'rxjs';
export declare class TableVirtualScrollDataSource<T> extends DataSource<T> {
    /** Stream that emits when a new data array is set on the data source. */
    private readonly _data;
    /** Stream emitting render data to the table (depends on ordered data changes). */
    private readonly _renderData;
    /**
     * Subscription to the changes that should trigger an update to the table's rendered rows, such
     * as filtering, sorting, pagination, or base data changes.
     */
    protected _renderChangesSubscription: Subscription | null;
    dataToRender$: Subject<T[]>;
    dataOfRange$: Subject<T[]>;
    protected streamsReady: boolean;
    /** Array of data that should be rendered by the table, where each object represents one row. */
    data: T[];
    constructor(initialData?: T[]);
    protected updateChangeSubscription(): void;
    protected initStreams(): void;
    /**
     * Used by the MatTable. Called when it connects to the data source.
     * @private
     */
    connect(): Observable<T[] | readonly T[]>;
    /**
     * Used by the MatTable. Called when it disconnects from the data source.
     * @private
     */
    disconnect(): void;
}