--- /dev/null
+var arrayMap = require('./_arrayMap'),
+ baseIteratee = require('./_baseIteratee'),
+ baseMap = require('./_baseMap'),
+ baseSortBy = require('./_baseSortBy'),
+ compareMultiple = require('./_compareMultiple');
+
+/**
+ * The base implementation of `_.orderBy` without param guards.
+ *
+ * @private
+ * @param {Array|Object} collection The collection to iterate over.
+ * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
+ * @param {string[]} orders The sort orders of `iteratees`.
+ * @returns {Array} Returns the new sorted array.
+ */
+function baseOrderBy(collection, iteratees, orders) {
+ var index = -1,
+ toIteratee = baseIteratee;
+
+ iteratees = arrayMap(iteratees.length ? iteratees : Array(1), function(iteratee) {
+ return toIteratee(iteratee);
+ });
+
+ var result = baseMap(collection, function(value, key, collection) {
+ var criteria = arrayMap(iteratees, function(iteratee) {
+ return iteratee(value);
+ });
+ return { 'criteria': criteria, 'index': ++index, 'value': value };
+ });
+
+ return baseSortBy(result, function(object, other) {
+ return compareMultiple(object, other, orders);
+ });
+}
+
+module.exports = baseOrderBy;