dc65k

const state = {};
const getJSON = response => response.json();
getAuth()
  .then(getJSON)
  .then(({ id }) => {
    state.id = id;
    return getUser(id);
  })
  .then(getJSON)
  .then(user => {
    state.user = user;
  })
  .then(() => getOrder('users', state.id))
  .then(getJSON)
  .then(({ order }) => state.order = order)
  .catch(console.error)
  .finally(() => console.log("all done", state));

возможна ли реализация данной логики с помощью Promise.allSettled?

const state = {};

// подготовка
const getJSON = response => response.json();
const getUser = id =>
  fetchUser(id)
    .then(getJSON)
    .then(({ user }) => (state.user = user));
const getOrder = id =>
  fetchOrder('users', id)
    .then(getJSON)
    .then(({ order }) => (state.order = order));

// поехали
getAuth()
  .then(getJSON)
  .then(({ id }) => {
    state.id = id;
    return Promise.allSettled([getUser(id), getOrder(id)]);
  })
  .catch(console.error)
  .finally(() => console.log('all done', state));

function search(nums, target, searchMin) {
  for (let iMin = 0, iMax = nums.length - 1; iMin <= iMax; ) {
    const index = (iMin + iMax) / 2 | 0;
    const num = nums[index];

    if (num === target && num !== nums[index + (searchMin ? -1 : 1)]) {
      return index;
    } else if (num <= target - (searchMin ? 1 : 0)) {
      iMin = index + 1;
    } else {
      iMax = index - 1;
    }
  }

  return -1;
}

function searchMinMax(nums, target) {
  const iMin = search(nums, target, true);
  return iMin === -1
    ? []
    : [ iMin, search(nums, target, false) ];
}