import { Injector } from '@angular/core';
import { Overlay } from '@angular/cdk/overlay';
import { PortalInjector } from '@angular/cdk/portal';
import { ToastData } from './toast-config';
import { ToastRef } from './toast-ref';
export declare class ToastService {
    private overlay;
    private parentInjector;
    private toasts;
    constructor(overlay: Overlay, parentInjector: Injector);
    success(text: string): ToastRef;
    danger(text: string): ToastRef;
    info(text: string): ToastRef;
    show(data: ToastData): ToastRef;
    getPositionStrategy(lastToast: ToastRef): import("@angular/cdk/overlay").GlobalPositionStrategy;
    getPosition(lastToast: ToastRef): string;
    get lastToast(): ToastRef;
    getInjector(data: ToastData, toastRef: ToastRef, parentInjector: Injector): PortalInjector;
}