export interface ConcurrencyGate {
    enter: () => Promise<number>;
    exit: (id: number) => void;
    use: <T>(func: () => Promise<T>) => Promise<T>;
}
/**
 * Prevents too many async functoins from running at the same time.
 * You can use this typically in combination with `Promise.all`.
 * See the tests for examples.
 * @param maxConcurrency The number of functions that can enter
 * the "gate" at the same time.
 */
declare const concurrencyGate: (maxConcurrency: number) => ConcurrencyGate;
export default concurrencyGate;