import { Subject } from 'rxjs';
export declare class VirtualVariableState {
    protected _values: Record<number, number>;
    protected _changes: Subject<{
        id: number;
        newValue: number;
    }>;
    get valueChange(): import("rxjs").Observable<{
        id: number;
        newValue: number;
    }>;
    setValue(id: number, value: number): void;
    getValue(id: number): number;
}