将async.eachLimit转换为promise [英] convert async.eachLimit to promise

问题描述

我有这样的异步代码

async.eachLimit（teams，1000，fetchTeamInfo，exit）

我需要将其转换为Promise（蓝鸟）

I need to convert it to Promise (bluebird)

我认为做这样的事情会很好：

I thought will be good to make something like:

Promise.method (teams, 1000, fetchTeamInfo) ->
  async.parallelLimit arr.map((a, i) ->
    ->
      iterator a, i, arr
  ), limit

但不确定方法是否正确

推荐答案

好吧，我看到您使用的是 Promise.method ，所以我假设bluebird-bluebird随附了 Promise.map 已通过并发参数支持您要查找的内容：

Well, I see you're using Promise.method so I'm assuming bluebird - bluebird comes with Promise.map with already supports what you're looking for with the concurrency parameter:

const fn = (teams, concurrency) => Promise.map(teams, fetchTeamInfo, {concurrency});

如您所见，我们在这里并没有做太多工作-我们可以使用 Promise.map 直接:)

As you see, we didn't really do here much - we can just use Promise.map directly :)

在CoffeeScript中，我认为它类似于：

In CoffeeScript I think it'd look something like:

fn = (teams, concurrency) -> Promise.map teams, fetchTeamInfo, concurrency: concurrency

但是我已经有将近三年没有写CoffeeScript了。

But I haven't written CoffeeScript in almost 3 years.

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