update eslint and move webpack to devDependencies

Author: lunny

.eslintrc.json

@@ -13,15 +13,13 @@
     "stylelint": "10.1.0",
     "stylelint-config-standard": "18.3.0",
     "updates": "8.5.3",
+    "webpack": "4.41.2",
     "webpack-cli": "3.3.10"
   },
   "browserslist": [
     "> 1%",
     "last 2 firefox versions",
     "last 2 safari versions",
     "ie 11"
-  ],
-  "dependencies": {
-    "webpack": "4.41.2"
-  }
+  ]
 }

package.json

@@ -1,3 +1,5 @@
+/* global require, module, __dirname */
+
 const path = require('path');
 const TerserPlugin = require('terser-webpack-plugin');
 
@@ -14,10 +16,7 @@ module.exports = {
   optimization: {
     minimize: true,
     minimizer: [new TerserPlugin({ 
-        sourceMap: true,
-        terserOptions: {
-            mangle: false,
-        },
+        sourceMap: true
      })],
   },
 };