import { BehaviorSubject } from 'rxjs';
import { ToastItem, type ToastItemOpts } from './ToastItem';
import type { ToastItemPublic } from './types';
export declare class ToastStack {
    readonly stack$: BehaviorSubject<ToastItem[]>;
    readonly add: (opts: ToastItemOpts) => ToastItemPublic;
    readonly remove: (item: ToastItem) => void;
}