import { Injector } from '@angular/core';
import { Overlay } from '@angular/cdk/overlay';
import { ToastConfig } from './toast-config';
import * as i0 from "@angular/core";
export declare class ToastService {
    private config;
    private overlay;
    private parentInjector;
    private _lastToast;
    private _config;
    constructor(config: any, overlay: Overlay, parentInjector: Injector);
    setConfig(config: ToastConfig): void;
    getConfig(): ToastConfig;
    showError(text: string): void;
    showWarning(text: string): void;
    showInformation(text: string): void;
    showSuccess(text: string): void;
    private show;
    private getPositionStrategy;
    private getPosition;
    private getInjector;
    static ɵfac: i0.ɵɵFactoryDeclaration<ToastService, [{ optional: true; }, null, null]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ToastService>;
}