import { OnDestroy } from '@angular/core';
import { DragMonitor } from '../drag-monitor';
import { DragBackend } from './drag-backend';
import { Unsubscribe } from './unsubscribe';
import { DragBackendEvent } from './drag-backend-event';
import { Coordinates } from '../utils/offset';
export declare class TestDragBackend extends DragBackend implements OnDestroy {
    private lastEvent?;
    constructor(monitor: DragMonitor);
    ngOnDestroy(): void;
    connectDragSource(sourceId: string, node: any): Unsubscribe;
    connectDropTarget(targetId: string, node: any): Unsubscribe;
    startDrag<T = any>(itemType: string, item: T, offset: Coordinates): void;
    stopDrag(): void;
    drop(): void;
    publish(event: DragBackendEvent): void;
}
export declare const TEST_DRAG_BACKEND_PROVIDER: {
    provide: typeof DragBackend;
    useExisting: typeof TestDragBackend;
};