다거부하든지 다리졸브한다.
const promise1 = Promise.resolve(3);
const promise2 = 42;
const promise3 = new Promise((resolve, reject) => {
setTimeout(resolve, 1000, 'foo');
});
Promise.all([promise1, promise2, promise3]).then((values) => {
console.log(values);
});
// Expected output: Array [3, 42, "foo"]
all settled의 사용
Promise.allSettled([
Promise.resolve(33),
new Promise(resolve => setTimeout(() => resolve(66), 0)),
99,
Promise.reject(new Error('an error'))
])
.then(values => console.log(values));
// [
// {status: "fulfilled", value: 33},
// {status: "fulfilled", value: 66},
// {status: "fulfilled", value: 99},
// {status: "rejected", reason: Error: an error}
// ]
async function run() {
const values = await Promise.allSettled([
Promise.resolve(33),
new Promise(resolve => setTimeout(() => resolve(66), 0)),
99,
Promise.reject(new Error('an error'))
])
console.log(values)
// [
// {status: "fulfilled", value: 33},
// {status: "fulfilled", value: 66},
// {status: "fulfilled", value: 99},
// {status: "rejected", reason: Error: an error}
// ]
}
run();
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