import { PortalInjector } from '@angular/cdk/portal';
import { Injector } from '@angular/core';
import { Overlay } from '@angular/cdk/overlay';
import { ToastRef } from '../models';
import { ToastData, ToastConfig } from '../config/types';
export declare class ToastService {
    private overlay;
    private parentInjector;
    private toastConfig;
    private lastToast;
    constructor(overlay: Overlay, parentInjector: Injector, toastConfig: ToastConfig);
    show(data: ToastData): ToastRef;
    getPositionStrategy(): import("@angular/cdk/overlay").GlobalPositionStrategy;
    getPosition(): string;
    getInjector(data: ToastData, toastRef: ToastRef, parentInjector: Injector): PortalInjector;
}