From 61ff03c927b37b8c9f2b770c8ca96c39f401e99d Mon Sep 17 00:00:00 2001
From: clydin <19598772+clydin@users.noreply.github.com>
Date: Wed, 3 Jan 2018 16:39:15 -0500
Subject: [PATCH] fix(index): copy loader `options` before modifying (#326)

---
 lib/index.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/index.js b/lib/index.js
index c3b03fbc..a4ef3a90 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -40,7 +40,7 @@ const SyntaxError = require('./Error')
  * @return {cb} cb      Result
  */
 module.exports = function loader (css, map) {
-  const options = loaderUtils.getOptions(this) || {}
+  const options = Object.assign({}, loaderUtils.getOptions(this))
 
   validateOptions(require('./options.json'), options, 'PostCSS Loader')
 
@@ -51,7 +51,7 @@ module.exports = function loader (css, map) {
 
   Promise.resolve().then(() => {
     const length = Object.keys(options)
-      .filter((option) =>  {
+      .filter((option) => {
         switch (option) {
           // case 'exec':
           case 'ident':