import { Provider } from '@angular/core';
export type DeferQueueFeatureBailout = DeferQueueFeature<DeferQueueFeatureKind.Bailout>;
export type DeferQueueFeatureConcurrency = DeferQueueFeature<DeferQueueFeatureKind.Concurrency>;
export type DeferQueueFeatureLogger = DeferQueueFeature<DeferQueueFeatureKind.Logger>;
export type DeferQueueFeatureQueue = DeferQueueFeature<DeferQueueFeatureKind.Queue>;
export type DeferQueueFeatureRouting = DeferQueueFeature<DeferQueueFeatureKind.Routing>;
export type DeferQueueFeatureTimeout = DeferQueueFeature<DeferQueueFeatureKind.Timeout>;
export declare enum DeferQueueFeatureKind {
    Logger = 0,
    Queue = 1,
    Routing = 2,
    Concurrency = 3,
    Timeout = 4,
    Bailout = 5
}
export type DeferQueueFeature<T extends DeferQueueFeatureKind> = {
    kind: T;
    providers: Provider[];
};
export declare function deferQueueFeature<T extends DeferQueueFeatureKind>(kind: T, providers: Provider[]): DeferQueueFeature<T>;