From fff029b368cbed34ba6556356f674d9ea7f8d217 Mon Sep 17 00:00:00 2001
From: msidolphin <OoMass-EffectoO@hotmail.com>
Date: Mon, 19 Nov 2018 10:18:15 +0800
Subject: [PATCH] Update index.js

---
 index.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 7bcc46a..533b654 100755
--- a/index.js
+++ b/index.js
@@ -29,8 +29,16 @@ module.exports = postcss.plugin('postcss-px-to-viewport', function (options) {
   var pxRegex = new RegExp('"[^"]+"|\'[^\']+\'|url\\([^\\)]+\\)|(\\d*\\.?\\d+)' + opts.unitToConvert, 'ig')
 
   return function (css) {
-
+    
     css.walkDecls(function (decl, i) {
+      
+      if (opts.exclude) {
+        if (Object.prototype.toString.call(opts.exclude) !== '[object RegExp]') {
+          throw new Error('options.exclude should be RegExp!')
+        }
+        if (decl.source.input.file.match(opts.exclude) !== null) return;
+      }
+      
       // This should be the fastest test and will remove most declarations
       if (decl.value.indexOf(opts.unitToConvert) === -1) return;