Merge branch 'v3.6' of github.com:mongodb/docs-node into v3.6

Author: caitlindavey

source/code-snippets/indexes/listIndexes.js

@@ -0,0 +1,27 @@
+const { MongoClient } = require("mongodb");
+
+// Replace the following with your MongoDB deployment's connection
+// string.
+const uri =
+  "mongodb+srv://<user>:<password>@<cluster-url>?writeConcern=majority";
+
+const client = new MongoClient(uri);
+
+async function run(){
+    try {
+        const database = client.db("<database>");
+        const collection = database.collection("<collection>");
+        // start-listIndexes-example
+        const result = await collection.listIndexes().toArray();
+        console.log("Existing indexes:\n");
+        for(const doc in result){
+            console.log(doc);
+        }
+        // end-listIndexes-example
+    }
+    finally{
+        await client.close();
+    }
+} 
+
+

source/fundamentals/indexes.txt

@@ -271,3 +271,22 @@ the following:
 
 Refer to the :manual:`Unique Indexes page </core/index-unique>` in the
 MongoDB server manual for more information.
+
+List Indexes
+------------
+
+You can use the ``listIndexes()`` method to list all of the indexes for
+a collection. The `listIndexes()
+<{+api+}/classes/Collection.html#listIndexes>`__ method takes an optional
+`ListIndexesOptions <{+api+}/interfaces/ListIndexesOptions.html>`__
+parameter. The ``listIndexes()`` method returns an object of type
+`ListIndexesCursor <{+api+}/classes/ListIndexesCursor.html>`__.
+
+The following code uses the ``listIndexes()`` method to list all the
+indexes in a collection:
+
+.. literalinclude:: /code-snippets/indexes/listIndexes.js
+   :language: js
+   :start-after: start-listIndexes-example
+   :end-before: end-listIndexes-example
+   :dedent: