import { InjectionToken } from '@angular/core';
import { Middleware } from './interfaces/middleware.interface';
import { StatesRegistry } from './interfaces/states-registry.interface';
export declare const FRRRI_OPERATIONS = "FRRRI_OPERATIONS";
export declare const FRRRI_MIDDLEWARE: InjectionToken<Middleware<any, any>[]>;
export declare const FRRRI_STATES_REGISTRY: InjectionToken<StatesRegistry<any>>;