/**
 * BoundedExecutor behaves as a ThreadPoolExecutor which will block on
 * calls to submit() once the limit given as "bound" work items are queued for
 * execution.
 * @param bound - Integer - the maximum number of items in the work queue
 * @param maxWorkers - Integer - the size of the thread pool
 */
export declare class BoundedExecutor {
    private workers;
    private queue;
    private semaphore;
    private maxWorkers;
    private isShutdown;
    constructor(bound: number, maxWorkers: number);
    /**
     * Submit a function for execution
     */
    submit<T>(fn: (...args: any[]) => T | Promise<T>, ...args: any[]): Promise<T>;
    /**
     * Shutdown the executor
     */
    shutdown(wait?: boolean): Promise<void>;
    private acquireSemaphore;
    private releaseSemaphore;
    private startWorker;
    private runWorker;
}
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