import { Context, ContextFactory } from "./context";
import { OperationsPriorityQueue } from "../lib/priorityQueue";
import { EmitterImpl } from "./emitter";
import { Plugin } from "./plugins/plugin";
import { Browser } from "./browser";
import { SentryWrapper } from "../lib/sentry";
export interface EventQueue {
    deliver(ctx: Context): Promise<Context>;
}
export declare class EventQueueImpl extends EmitterImpl implements EventQueue {
    private pQueue;
    private readonly plugins;
    private flushing;
    private readonly browser;
    private readonly contextFactory;
    private readonly sentry;
    constructor(plugins: Plugin[], pQueue: OperationsPriorityQueue<Context>, browser: Browser, sentry: SentryWrapper, contextFactory?: ContextFactory);
    private push;
    deliver(ctx: Context): Promise<Context>;
    private subscribeToDelivery;
    private flush;
    private attempt;
    private runPlugin;
    private handleFlushError;
}