promessa de tempo limite
const longTask = () => new Promise(resolve =>
setTimeout(() => resolve("Long task complete."), 300))
const timeout = (cb, interval) => () =>
new Promise(resolve => setTimeout(() => cb(resolve), interval))
const onTimeout = timeout(resolve =>
resolve("The 'maybeLongTask' ran too long!"), 200)
Promise.race([longTask, onTimeout].map(f => f())).then(console.log)
Excited Eel