Bump webpack-merge from 4.2.2 to 5.0.9

Bumps [webpack-merge](https://github.com/survivejs/webpack-merge) from 4.2.2 to 5.0.9.
- [Release notes](https://github.com/survivejs/webpack-merge/releases)
- [Changelog](https://github.com/survivejs/webpack-merge/blob/master/CHANGELOG.md)
- [Commits](survivejs/webpack-merge@v4.2.2...v5.0.9)

Signed-off-by: dependabot-preview[bot] <[email protected]>

core/webpack.test.js

@@ -1,4 +1,4 @@
-/*
+/**
  * @copyright 2018 Christoph Wurst <[email protected]>
  *
  * @author 2018 Christoph Wurst <[email protected]>
@@ -19,7 +19,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-const merge = require('webpack-merge');
+const { merge } = require('webpack-merge');
 const common = require('./webpack.js');
 // webpack.config.js
 const nodeExternals = require('webpack-node-externals')

package.json

@@ -120,7 +120,7 @@
     "vue-template-compiler": "^2.6.11",
     "webpack": "^4.43.0",
     "webpack-cli": "^3.3.12",
-    "webpack-merge": "^4.2.2",
+    "webpack-merge": "^5.0.9",
     "webpack-node-externals": "^1.7.2"
   },
   "browserslist": [

webpack.common.js

@@ -1,6 +1,6 @@
 /* eslint-disable camelcase */
 const path = require('path')
-const merge = require('webpack-merge')
+const { merge } = require('webpack-merge')
 const { VueLoaderPlugin } = require('vue-loader')
 
 const accessibility = require('./apps/accessibility/webpack')

webpack.dev.js

@@ -1,4 +1,4 @@
-const merge = require('webpack-merge');
+const { merge } = require('webpack-merge');
 const common = require('./webpack.common.js');
 
 module.exports = common.map(

webpack.prod.js

@@ -1,4 +1,4 @@
-const merge = require('webpack-merge')
+const { merge } = require('webpack-merge')
 const common = require('./webpack.common.js')
 const TerserPlugin = require('terser-webpack-plugin');