import { ApplicationRef, ComponentFactoryResolver, InjectionToken, Injector, TemplateRef } from '@angular/core';
import { ShowToastOptions } from './toast.component';
import { ToastRegionComponent } from './toast-region.component';
import * as i0 from "@angular/core";
type ToastOptions = ShowToastOptions & {
    placement: ToastRegionComponent['placement'];
};
export declare const TOAST_OPTIONS: InjectionToken<Partial<ShowToastOptions>>;
/**
 * Can be used to show Toast notifications.
 * A toast displays brief, temporary notifications of events in the application.
 */
export declare class Toast {
    private injector;
    private componentFactoryResolver;
    private options;
    private appRef;
    private toastQueue;
    private toastRegionOutlet?;
    private document;
    private toastRegionRef?;
    constructor(injector: Injector, componentFactoryResolver: ComponentFactoryResolver, options: ToastOptions, appRef: ApplicationRef);
    /**
     * Shows a toast notification with content set from a string or a template.
     */
    show(content: string | TemplateRef<unknown>, { timeout, onClose, title, variant, }?: ShowToastOptions & {
        onClose?: () => void;
    }): void;
    /**
     * Creates the toast region element the first time it's called.
     * @private
     */
    private ensureToastRegion;
    static ɵfac: i0.ɵɵFactoryDeclaration<Toast, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<Toast>;
}
export {};