npm: use webpack instead of upglify-js.

_config.yml

@@ -61,6 +61,7 @@ exclude:
   - Gemfile.lock
   - package.json
   - package-lock.json
+  - webpack.config.js
   - vendor
   - node_modules
   - README.md

_scripts/build.sh

@@ -1,9 +1,2 @@
 #!/usr/bin/env bash
-
+npx webpack
-UGLIFYJS=node_modules/uglify-js/bin/uglifyjs
-
-SRC=_scripts/app.js
-TARGET=assets/scripts.js
-
-echo "UglifyJS: $SRC -> $TARGET"
-$UGLIFYJS $SRC -c -m > $TARGET

package.json

@@ -3,9 +3,9 @@
   "version": "1.0.0",
   "description": "",
   "main": "index.js",
-  "dependencies": {},
   "devDependencies": {
-    "uglify-js": "^3.6.9"
+    "webpack": "^5.67.0",
+    "webpack-cli": "^4.9.2"
   },
   "scripts": {
     "build": "./_scripts/build.sh",

webpack.config.js

@@ -0,0 +1,10 @@
+const path = require('path');
+
+module.exports = {
+    mode: 'production',
+    entry: './_scripts/app.js',
+    output: {
+        path: path.resolve(__dirname, 'assets'),
+        filename: 'scripts.js',
+    }
+};