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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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