From d1f5c06e63abb879689db82b781fb80280b704be Mon Sep 17 00:00:00 2001
From: muji <freeformsystems@gmail.com>
Date: Tue, 7 Feb 2017 16:21:11 +0800
Subject: [PATCH] Comment on call to deserialize().

---
 index.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/index.js b/index.js
index 630095b..d09f770 100644
--- a/index.js
+++ b/index.js
@@ -29,6 +29,10 @@ function Render(opts) {
 
 function render(chunk, encoding, cb) {
   if(!Node.is(chunk, Node.EOF)) {
+    /*
+     * this caters for when a stream is being piped directly and
+     * has not been deserialized to a real AST node
+     */
     if(!chunk._type) {
       chunk = Node.deserialize(chunk);
     }