var p1 = new Promise((resolve, reject) => {
resolve('p1');
});
var p2 = new Promise((resolve, reject) => {
resolve('p2');
});
Promise.all([
p1.finally(() => { console.log("p1 completed"); }),
p2.finally(() => { console.log("p2 completed"); }),
]).then(values => {
console.log(values[0]);
console.log(values[1]);
}).finally(() => {
console.log("all() completed");
I think I've only seen examples on the web with a single .finally() at the end [1]: https://i.stack.imgur.com/HeQV8.png
Sure, finally is a chainable promise method just like catch (with the only difference that its callback does not take a parameter). You can use it as many times as you want, on any promise.
Promise.all([
p1.finally(() => { console.log("p1 completed"); }),
p2.finally(() => { console.log("p2 completed"); }),
]).finally(() => {
console.log("all() completed");
})
You may chain as many .finally() calls as you like onto any promise.
(Promise.all() returns a new promise, so this rule applies here as well.)
Run this, and you should see all 3 comments log.
Promise.resolve().
finally(() => console.log('Finally #1')).
finally(() => console.log('Finally #2')).
finally(() => console.log('Finally #3'))