export function arrayUnique(array) {
  return Array.from((new Set(array)).values());
}

export function flatten(array) {
  return array.reduce((flattened, elm) => flattened.concat(elm), []);
}

export function fromObject(object) {
  const array = [];
  for (const key in object) {
    array.push(object[key]);
  }
  return array;
}

export function shuffle(array) {
  const shuffled = [...array];
  shuffleInPlace(shuffled);
  return shuffled;
}

export function shuffleInPlace(array) {
  let i = 0, j = 0, temp = null;
  for (i = array.length - 1; i > 0; i -= 1) {
    j = Math.floor(Math.random() * (i + 1))
    temp = array[i]
    array[i] = array[j]
    array[j] = temp
  }
}