Simple sort

asort.js

/**
 * Sort an array by another array
 * i.e. (blue, red, yellow, orange) -> (red, orange, yellow blue)
 * 
 * @param {Array} a - Array to be sorted
 * @param {Array} b - Array of order
 */

function asort(a, b) {
  let z = [...a];

  for (let i = 0, len = a.length; i < len; i++) {
    let v = b[i];
    let l = z.indexOf(v);
    if (v && x > -1) {
      let t = [...z.slice(0, l), ...z.slice(l + 1, len)];
      z = [...t.slice(0, i), v, ...t.slice(i, len)];
    }
  }

  return z;
}