1  var compareAscending = require('./_compareAscending');
 2  
 3  /**
 4   * Used by `_.orderBy` to compare multiple properties of a value to another
 5   * and stable sort them.
 6   *
 7   * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
 8   * specify an order of "desc" for descending or "asc" for ascending sort order
 9   * of corresponding values.
10   *
11   * @private
12   * @param {Object} object The object to compare.
13   * @param {Object} other The other object to compare.
14   * @param {boolean[]|string[]} orders The order to sort by for each property.
15   * @returns {number} Returns the sort order indicator for `object`.
16   */
17  function compareMultiple(object, other, orders) {
18    var index = -1,
19        objCriteria = object.criteria,
20        othCriteria = other.criteria,
21        length = objCriteria.length,
22        ordersLength = orders.length;
23  
24    while (++index < length) {
25      var result = compareAscending(objCriteria[index], othCriteria[index]);
26      if (result) {
27        if (index >= ordersLength) {
28          return result;
29        }
30        var order = orders[index];
31        return result * (order == 'desc' ? -1 : 1);
32      }
33    }
34    // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
35    // that causes it, under certain circumstances, to provide the same value for
36    // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
37    // for more details.
38    //
39    // This also ensures a stable sort in V8 and other engines.
40    // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
41    return object.index - other.index;
42  }
43  
44  module.exports = compareMultiple;