ES6诺言 - 像async.each？ [英] ES6 Promises - something like async.each?

问题描述

试图弄清楚，如何发现功能酷似async.eachSeries，我需要序列（不平行）运行异步操作的列表，但不能找到一种方法，做到在本地ES6的东西，可以有人建议好吗？

Trying to figure-out how to find something that functional exactly like async.eachSeries, i need a list of async actions run in sequence (not in parallel) but can't find a way to do it in native ES6, can anyone advise please?

P.S。想过发电机/产量，但所以我没有意识到究竟是如何能帮助我没有经验呢。

p.s. thought about generators/yield but don't have experience yet so i'm not realized how exactly it can help me.

**编辑：每个请求的，这里有一个例子：

** per request, here is an example:

假设此code：

let model1 = new MongooseModel({prop1: "a", prop2: "b"});
let model2 = new MongooseModel({prop1: "c", prop2: "d"});

let arr = [model1 , model2];

现在，我想通过它seriesly运行，而不是平行的，所以用了异步NPM很容易：

Now, i want to run over it in seriesly, not parallel, so with the "async" NPM it's easy:

async.eachSeries(arr, (model, next)=>{
    model.save.then(next).catch(next);
}, err=>{
    if(err) return reject(error);
    resolve();
})

我的问题是：与ES6，我能做到这一点本土？没有故宫异步包？

My question is: with ES6, can i do it native? without the NPM 'async' package?

推荐答案

对于那些谁喜欢简短的回答：

For those who like short answers:

[func1, func2].reduce((p, f) => p.then(f), Promise.resolve());

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