build: Update local dev JS tools

Author: blocknotes

.gitignore

@@ -4,10 +4,13 @@
 /.rspec_failures
 /.rubocop-*
 /Gemfile.lock
+/eslint.config.mjs
+/package-lock.json
 /gemfiles/.bundle/config
 
 /_misc/
 /coverage/
+/node_modules/
 /spec/dummy/db/*.sqlite3*
 /spec/dummy/log/
 /spec/dummy/storage/

package.json

@@ -9,5 +9,10 @@
   "files": [
     "app/**/*",
     "index.js"
-  ]
+  ],
+  "devDependencies": {
+    "@eslint/js": "^9.22.0",
+    "eslint": "^9.22.0",
+    "globals": "^16.0.0"
+  }
 }