Transform forEach in Promise (without ASYC/AWAIT)

Asked May 08 '19 at 16:28

Active May 08 '19 at 17:18

Viewed 43 times

I need to transform a forEach in promise. The code is legacy and I can't use async/await operators.

Promise.all(Object.entries(data).forEach(function (data) {
        let [data1, data2] = data
        let info;

        consultData.getResponse(data1).then(result => info = result).then(function () {
            return dataServices.find(info)
                .then(function (result) {
                    // do things
                })
                .then(function (info) {
                    // do final things
                })
        })
    })).then((result) => {
            // do something when all things have intereted and finished
        })

But output that Promise.all can't be used. If I try with Promise.resolve, the last is printed before all things have finished their processing.

How I can transform the forEach in a promise for i can use .then() after all iteration?

ASYNC/AWAIT DON'T WORK IN THIS CODE

edited May 08 '19 at 17:18

asked May 08 '19 at 16:28

Develop_SP

That's not the right way to use `Promise.all`. Try something along the lines of `Promise.all(Object.entries(data).map(... return somePromise ...))` – p.s.w.g May 08 '19 at 16:31
this can be achieved using `reduce` method of array – Shridhar Sharma May 08 '19 at 16:34
This is not a duplicate of the flagged question. User cannot use async/await in their code for legacy reasons (if mods ever actually read questions..) – Maximilian Burszley May 08 '19 at 16:35
@TheIncorrigible1 the answer is still the same. The only caveat is that `consultData.getResponse(data1).then(...)` must be _returned_ from the function after changing `forEach()` to `map()`. I'm happy to find additional duplicates but this exact question has definitely been asked many times before. – Patrick Roberts May 08 '19 at 16:37
People, async/await do'nt work in this code..... I told.... – Develop_SP May 08 '19 at 17:16
Change for map don't work too :( – Develop_SP May 08 '19 at 17:17
ITS NOT A DUPLICATE QUESTION! – Develop_SP May 08 '19 at 17:22
@PatrickRoberts this question it is not duplicate, i can use async/await in this code...... – Develop_SP May 08 '19 at 17:32

Transform forEach in Promise (without ASYC/AWAIT)

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