Promise.all and wait all whatever it error

Question

I know Promise.all will wait all Promise resolved or one Promise rejected. how can I make it wait all Promise resolved or rejected?

Answer 1

You are probably looking for Promise.allSettled().

The Promise.allSettled() method returns a promise that resolves after all of the given promises have either fulfilled or rejected, with an array of objects that each describes the outcome of each promise.

Source: Promise.allSettled() - JavaScript | MDN

Answer 2

You can define a custom function in this way. This function will always succeed without rejection.

const reflect = p => p.then(v => ({v, status: "fulfilled" }),
                            e => ({e, status: "rejected" }));

reflect(promise).then((v => {
    console.log(v.status);
});

And then you can apply Promise.all in this way, and can filter result depending on results of individual Promise.

Promise.all(arr.map(reflect)).then(function(results){
    var success = results.filter(x => x.status === "fulfilled");
});