import * as i0 from "@angular/core";
export declare class DeferQueueProcessor {
    private static processing;
    private readonly logger;
    private readonly queue;
    private readonly isRoutingActive$;
    private readonly concurrency;
    private running;
    process(): void;
    private processQueue;
    private isNextItemTimedout;
    private processItem;
    private updateConcurrency;
    private suspendForNavigation;
    static ɵfac: i0.ɵɵFactoryDeclaration<DeferQueueProcessor, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DeferQueueProcessor>;
}