From 14bce2746fd2d16b8802f25a72f2e38a39822880 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Peter=20M=C3=BCller?= <munter@fumle.dk>
Date: Wed, 26 Mar 2014 20:45:56 +0100
Subject: [PATCH] Make pngquant-bin an optional dependency.

---
 lib/PngQuant.js | 8 +++++++-
 package.json    | 2 +-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/PngQuant.js b/lib/PngQuant.js
index 24d85dd..a8b1dfe 100644
--- a/lib/PngQuant.js
+++ b/lib/PngQuant.js
@@ -1,7 +1,13 @@
 var childProcess = require('child_process'),
     Stream = require('stream').Stream,
     util = require('util'),
-    binPath = require('pngquant-bin').path;
+    pngQuantBin;
+
+try {
+    pngQuantBin = require('pngquant-bin');
+} catch (e) {}
+
+var binPath = pngQuantBin ? pngQuantBin.path : 'pngquant';
 
 function PngQuant(pngQuantArgs) {
     Stream.call(this);
diff --git a/package.json b/package.json
index dd0b27e..27e3973 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
   "directories": {
     "test": "test"
   },
-  "dependencies": {
+  "optionalDependencies": {
     "pngquant-bin": "=0.1.7"
   },
   "devDependencies": {