sort an array of objects by another array's values in js

sort_array_by_array.js

const ordering_arr = ["primary", "home", "business", "camp", "outhouse", "mars", "pluto"];

const to_sort = [
  {
    "address": "1",
    "type": "primary"
  },
  {
    "address": "2",
    "type": "home"
  },
  {
    "address": "2a",
    "type": "home"
  },
  {
    "address": "2b",
    "type": "home"
  },
  {
    "address": "3",
    "type": "business"
  },
  {
    "address": "3a",
    "type": "business"
  },
  {
    "address": "3b",
    "type": "business"
  },
  {
    "address": "3c",
    "type": "business"
  },
  {
    "address": "4",
    "type": "camp"
  },
  {
    "address": "4a",
    "type": "camp"
  },
  {
    "address": "4b",
    "type": "camp"
  },
  {
    "address": "4c",
    "type": "camp"
  },
  {
    "address": "4d",
    "type": "camp"
  },
  {
    "address": "5",
    "type": "outhouse"
  },
  {
    "address": "5a",
    "type": "outhouse"
  },
  {
    "address": "5b",
    "type": "outhouse"
  },
  {
    "address": "5c",
    "type": "outhouse"
  },
  {
    "address": "6",
    "type": "pluto"
  },
];

const sort_by_types = (contents, ordering) => {
  const new_contents = [...contents],
   ordering_lookup = {};

  ordering.forEach((elem, index) => {
    ordering_lookup[elem] = index;
  });

  new_contents.sort((a, b) => {
    return ordering_lookup[a.type] - ordering_lookup[b.type]
  });

  return new_contents;
}

/**
 * Shuffles array in place.
 * @param {Array} a items An array containing the items.
 */
function shuffle(a) {
    var j, x, i;
    for (i = a.length - 1; i > 0; i--) {
        j = Math.floor(Math.random() * (i + 1));
        x = a[i];
        a[i] = a[j];
        a[j] = x;
    }
    return a;
}

shuffle(to_sort);

console.log(sort_by_types(to_sort, ordering_arr));