import { SnackbarConfig } from './snackbar-config.model';
import { SnackbarRef } from './snackbar-ref.model';
import * as i0 from "@angular/core";
export declare class SnackbarService {
    private readonly _defaultConfig;
    constructor(userOptions: SnackbarConfig);
    open(message: string, config?: SnackbarConfig): SnackbarRef;
    static ɵfac: i0.ɵɵFactoryDeclaration<SnackbarService, [{ optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SnackbarService>;
}