Promise Methods
In addition to the standard next and catch methods exposed by promises, there are a number of other convenience methods, such as all, allSettled, any, and race, that make working with promises nicer. How can they be used in the async/await world? They can actually work together quite nicely. For example, here is a use of Promise.all that employs then and catch. Given three promises, p1, p2, and p3:
Promise.all([p1, p2, p3]) .then(values => console.log(values)) .catch(e => console.error(e));
There isn't any kind of awaitAll operator, so if we want to execute our promises in parallel, we're still going to need to use Promise.all, but we can avoid chaining then and catch if we choose to:
try {
const values = await Promise.all([p1, p2, p3]);
console.log(values);
} catch (e) {
console.error(e);
}
In this case, we might feel like the code isn't improved by the addition of await...