setTimeout / Promise.resolve: Macrotask vs Microtask
You can't control how different architectures queue the promises and timeouts.
Excellent Read Here: https://jakearchibald.com/2015/tasks-microtasks-queues-and-schedules/
If you want the same results you are going to have to chain promises.
let chain = Promise.resolve(null)
for (let i = 0; i < 2; i++) {
console.log("Chaining ", i);
chain = chain.then(() => Promise.resolve()
.then(() => {
setTimeout(() => {
console.log("Timeout ", i);
Promise.resolve()
.then(() => {
console.log("Promise 1 ", i);
})
.then(() => {
console.log("Promise 2 ", i);
})
}, 0)
}))
}
chain.then(() => console.log('done'))This was recognized by the NodeJs team as a bug, more details here: https://github.com/nodejs/node/issues/22257
Meantime it was already fixed and released has part of Node v11.
Best, José