Intro
一个限制最大（异步任务）并发的高阶函数。
A higher-order function that limits the maximum (asynchronous task) concurrency.
Demo
Types
export declare function concurrentAsync<T, P extends any[], R>(fn: (this: T, ...p: P) => Promise<R>, maxCount?: number): (this: T, ...p: P) => Promise<R>;
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