From aa7da1538de58ab6262a06c12d6625ada07e72e1 Mon Sep 17 00:00:00 2001
From: Dan Aprahamian <dan.aprahamian@gmail.com>
Date: Fri, 10 Nov 2017 16:23:06 -0500
Subject: [PATCH] feat(aggregate): support hit field for aggregate command

Supports passing an index hint to the aggregate command
---
 lib/collection.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/collection.js b/lib/collection.js
index a4bff43d74..3ef3897551 100644
--- a/lib/collection.js
+++ b/lib/collection.js
@@ -2460,6 +2460,7 @@ Collection.prototype.aggregate = function(pipeline, options, callback) {
         opts.cursor ||
         opts.out ||
         opts.maxTimeMS ||
+        opts.hint ||
         opts.allowDiskUse)
         ? args.pop()
         : {};
@@ -2504,6 +2505,9 @@ Collection.prototype.aggregate = function(pipeline, options, callback) {
   if (options.allowDiskUse) command.allowDiskUse = options.allowDiskUse;
   if (typeof options.maxTimeMS === 'number') command.maxTimeMS = options.maxTimeMS;
 
+  // If we are giving a hint
+  if (options.hint) command.hint = options.hint;
+
   options = shallowClone(options);
   // Ensure we have the right read preference inheritance
   options = getReadPreference(this, options, this.s.db, this);