import { Logger } from './logger';
export interface Queue<Item> {
    depth: () => number;
    enqueue: (item: Item) => void;
    flushDelay: number;
    flushInterval: number;
    isStarted: () => boolean;
    maxBatchSize: number;
    maxQueueDepth: number;
    start: () => void;
}
export interface Create<Item> {
    flushDelay?: number;
    flushInterval?: number;
    logger: Logger;
    maxBatchSize?: number;
    maxQueueDepth?: number;
    sink: (items: Array<Item>) => void;
}
export declare const create: <Item = unknown>({ flushDelay: newFlushDelay, flushInterval: newFlushInterval, logger, maxBatchSize: newMaxBatchSize, maxQueueDepth: newMaxQueueDepth, sink, }: Create<Item>) => Queue<Item>;
interface Timer {
    isRunning: () => boolean;
    start: () => void;
    stop: () => void;
    restart: () => void;
}
interface CreateTimer {
    callback: () => void;
    delay: number;
}
export declare const createTimer: ({ callback, delay }: CreateTimer) => Timer;
interface Interval {
    isRunning: () => boolean;
    start: () => void;
    stop: () => void;
}
interface CreateInterval {
    callback: () => boolean;
    delay: number;
}
export declare const createInterval: ({ callback, delay }: CreateInterval) => Interval;
export {};
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