Merge branch '8.x-webpack4' into 8.x

Author: cseufert

lib/loader.js

@@ -29,13 +29,13 @@ module.exports = function (content) {
   this.cacheable()
   var loaderContext = this
   var query = loaderUtils.getOptions(this) || {}
-  var options = Object.assign({}, this.options.vue, this.vue, query)
+  var options = Object.assign({}, this.options && this.options.vue, this.vue, query)
   var filePath = this.resourcePath
   var fileName = path.basename(filePath)
   var moduleId = '_v-' + hash(filePath)
 
   // respect user babel options
-  if (this.options.babel) {
+  if (this.options && this.options.babel) {
     defaultLoaders.js = 'babel-loader'
   }
 

lib/style-rewriter.js

@@ -33,7 +33,7 @@ module.exports = function (css, map) {
   var cb = this.async()
 
   var query = loaderUtils.getOptions(this) || {}
-  var options = this.options.vue || {}
+  var options = this.options && this.options.vue || {}
   var autoprefixOptions = options.autoprefixer
   var postcssOptions = options.postcss
 
@@ -58,7 +58,7 @@ module.exports = function (css, map) {
     autoprefixOptions = assign(
       {},
       // also respect autoprefixer-loader options
-      this.options.autoprefixer,
+      this.options && this.options.autoprefixer,
       autoprefixOptions
     )
     var autoprefixer = require('autoprefixer')(autoprefixOptions)