fix: clone rules before adding oneOf

fixes #186

Author: KaelWD

dev5/webpack.config.js

@@ -88,7 +88,7 @@ module.exports = {
 }
 
 if (isProd) {
-  module.exports.devtool = '#source-map'
+  module.exports.devtool = 'source-map'
   // http://vue-loader.vuejs.org/en/workflow/production.html
   module.exports.plugins = (module.exports.plugins || []).concat([
     new webpack.DefinePlugin({

lib/getVueRules.js

@@ -15,9 +15,10 @@ module.exports = {
     const rules = compiler.options.module.rules
 
     // Naive approach without RuleSet or RuleSetCompiler
-    rules.map((rule, i) => rule.use && rule.use.find && rule.use.find(isVueLoader) ? i : null).filter(v => v != null)
-
-    // find the rules that apply to vue files
-    return rules.filter(rule => rule.use && rule.use.find && rule.use.find(isVueLoader))
+    return rules.map((rule, index) => (
+      rule.use && rule.use.find && rule.use.find(isVueLoader)
+        ? { rule: { ...rule }, index }
+        : null
+    )).filter(v => v != null)
   }
 }

lib/plugin.js

@@ -20,6 +20,12 @@ class VuetifyLoaderPlugin {
 
     vueRules.forEach(this.updateVueRule.bind(this))
 
+    const rules = [...compiler.options.module.rules]
+    vueRules.forEach(({ rule, index }) => {
+      rules[index] = rule
+    })
+    compiler.options.module.rules = rules
+
     if (this.options.progressiveImages) {
       const options = typeof this.options.progressiveImages === 'boolean'
         ? undefined
@@ -52,7 +58,7 @@ class VuetifyLoaderPlugin {
     }
   }
 
-  updateVueRule (rule) {
+  updateVueRule ({ rule }) {
     if (this.options.progressiveImages) {
       const vueLoaderOptions = rule.use.find(isVueLoader).options
       vueLoaderOptions.compilerOptions = vueLoaderOptions.compilerOptions || {}