refactor(webpack): Bumped the Webpack version to v4.

package.json

@@ -58,7 +58,7 @@
   },
   "husky": {
     "hooks": {
-      "pre-commit": "npm run lint && npm run test && npm run build && git add -A"
+      "pre-commit": "npm run lint && npm run test && npm run build"
     }
   },
   "devDependencies": {
@@ -70,15 +70,17 @@
     "eslint": "^4.17.0",
     "eslint-plugin-standard": "^3.0.1",
     "eslint-plugin-vue": "^4.2.2",
-    "highcharts": "^7.1.1",
+    "highcharts": ">=7.1.1",
     "husky": "^1.0.0-rc.13",
     "jest": "^24.8.0",
     "jest-serializer-vue": "^2.0.2",
     "standard": "^10.0.3",
     "standard-version": "^8.0.1",
+    "uglifyjs-webpack-plugin": "^2.2.0",
     "vue": "^2.6.10",
     "vue-jest": "^3.0.4",
     "vue-template-compiler": "^2.6.10",
-    "webpack": "^3.10.0"
+    "webpack": "^4.0.0",
+    "webpack-cli": "^4.7.0"
   }
 }

webpack.config.js

@@ -1,7 +1,8 @@
-const webpack = require('webpack')
 const path = require('path')
+const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
 
 module.exports = {
+  mode: 'production',
   entry: {
     'highcharts-vue': './src/index.js',
     'highcharts-vue.min': './src/index.js'
@@ -18,6 +19,12 @@ module.exports = {
       commonjs: 'highcharts',
       commonjs2: 'highcharts',
       amd: 'highcharts'
+    },
+    vue: {
+      root: 'Vue',
+      commonjs: 'vue',
+      commonjs2: 'vue',
+      amd: 'vue'
     }
   },
   module: {
@@ -29,10 +36,11 @@ module.exports = {
       }
     ]
   },
-  plugins: [
-    new webpack.optimize.UglifyJsPlugin({
-      include: /\.min\.js$/,
-      minimize: true
-    })
-  ]
+  optimization: {
+    minimizer: [
+      new UglifyJsPlugin({
+        test: /\.min\.js$/
+      })
+    ]
+  }
 }