type SemaphoreOptions = {
    maxConcurrency: number;
};
type SemaphoreLock = {
    release: () => void;
};
declare class Semaphore {
    #private;
    constructor(options?: SemaphoreOptions);
    run<B>(task: () => (B | Promise<B>)): Promise<B>;
    run<A extends Array<any>, B>(task: (...args: A) => (B | Promise<B>), ...args: A): Promise<B>;
    acquire(): Promise<SemaphoreLock>;
    get acquired(): number;
    get options(): SemaphoreOptions;
    set options(options: SemaphoreOptions);
}

export { Semaphore, type SemaphoreLock };