fix vueoptions

QingWei-Li · QingWei-Li · commit 44c8ba76aa6f · 2018-03-28T12:37:30.000+08:00
diff --git a/lib/markdown-compiler.js b/lib/markdown-compiler.js
@@ -65,7 +65,7 @@ module.exports = function(source) {
   var parser, preprocess;
   var params = loaderUtils.getOptions(this) || {};
   var vueMarkdownOptions = this._compilation.__vueMarkdownOptions__;
-  var opts = Object.create(vueMarkdownOptions.__proto__); // inherit prototype
+  var opts = vueMarkdownOptions ? Object.create(vueMarkdownOptions.__proto__) : {}; // inherit prototype
   var preventExtract = false;
 
   opts = Object.assign(opts, params, vueMarkdownOptions); // assign attributes
