Sort with a base and a secondary attribute

multiple-sort.js

/**
 * Sort with a base and a secondary attribute
 * 
 * @param {Object} x - first object to compare
 * @param {Object} y - second object to compare
 * @param {string} m1 - base sort method
 * @param {boolean} m1_asc - base method ascending
 * @param {string} m2 - secondary sort method
 * @param {boolean} m2_asc - secondary method ascending
 * @returns {number} - sort comparison result
 */
sortProperties(x, y, m1, m1_asc, m2, m2_asc) {
  const a = x[m1] || false;
  const b = y[m1] || false;
  const order = m1_asc ? [a, b] : [b, a];
  const test = a && b ? order[0] - order[1] : a && !b ? -1 : 1;

  if (undefined !== m2) {
    const c = x[m2] || false;
    const d = y[m2] || false;
    const childOrder = m2_asc ? [c, d] : [d, c];
    const childTest = c && d ? childOrder[0] - childOrder[1] : c && !d ? -1 : 1;

    return test === 0 ? childTest : test;
  }

  return test;
}