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						- var baseOrderBy = require('./_baseOrderBy'),
 -     isArray = require('./isArray');
 - 
 - /**
 -  * This method is like `_.sortBy` except that it allows specifying the sort
 -  * orders of the iteratees to sort by. If `orders` is unspecified, all values
 -  * are sorted in ascending order. Otherwise, specify an order of "desc" for
 -  * descending or "asc" for ascending sort order of corresponding values.
 -  *
 -  * @static
 -  * @memberOf _
 -  * @since 4.0.0
 -  * @category Collection
 -  * @param {Array|Object} collection The collection to iterate over.
 -  * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
 -  *  The iteratees to sort by.
 -  * @param {string[]} [orders] The sort orders of `iteratees`.
 -  * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
 -  * @returns {Array} Returns the new sorted array.
 -  * @example
 -  *
 -  * var users = [
 -  *   { 'user': 'fred',   'age': 48 },
 -  *   { 'user': 'barney', 'age': 34 },
 -  *   { 'user': 'fred',   'age': 40 },
 -  *   { 'user': 'barney', 'age': 36 }
 -  * ];
 -  *
 -  * // Sort by `user` in ascending order and by `age` in descending order.
 -  * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
 -  * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
 -  */
 - function orderBy(collection, iteratees, orders, guard) {
 -   if (collection == null) {
 -     return [];
 -   }
 -   if (!isArray(iteratees)) {
 -     iteratees = iteratees == null ? [] : [iteratees];
 -   }
 -   orders = guard ? undefined : orders;
 -   if (!isArray(orders)) {
 -     orders = orders == null ? [] : [orders];
 -   }
 -   return baseOrderBy(collection, iteratees, orders);
 - }
 - 
 - module.exports = orderBy;
 
 
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