Destructuring objects from an array using map?

Question

I have wrote this simple code that destructures an array of objects to build new arrays from each key. I am learning ES6 and would like to refactor it into one line of code

Answer 1

Here's a solution using Array.prototype.reduce():

const candles = [{open: 1, close: 2, low: 3, high: 4, volume: 5}, {open: 6, close: 7, low: 8, high: 9, volume: 10}];

const result = candles.reduce((a, v) => {
  Object.keys(v).forEach(k => (a[k] = a[k] || []).push(v[k]));
  return a;
}, {});

console.log(result);