Move to shakapacker 6 and install dependencies

Gemfile

@@ -18,7 +18,7 @@ gem 'activemerchant'
 gem 'angular-rails-templates'
 gem 'ransack', '~> 4.1.0'
 gem 'responders'
-gem 'webpacker', '6.0.0.rc.6'
+gem 'shakapacker', '6.0.0'
 
 # Indirect dependency but we access it directly in JS specs.
 # It turns out to be hard to upgrade but please do if you can.

Gemfile.lock

@@ -813,6 +813,11 @@ GEM
     sd_notify (0.1.1)
     securerandom (0.4.1)
     semantic_range (3.1.0)
+    shakapacker (6.0.0)
+      activesupport (>= 5.2)
+      rack-proxy (>= 0.6.1)
+      railties (>= 5.2)
+      semantic_range (>= 2.3.0)
     shoulda-matchers (7.0.1)
       activesupport (>= 7.1)
     sidekiq (7.2.4)
@@ -939,11 +944,6 @@ GEM
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
-    webpacker (6.0.0.rc.6)
-      activesupport (>= 5.2)
-      rack-proxy (>= 0.6.1)
-      railties (>= 5.2)
-      semantic_range (>= 2.3.0)
     webrick (1.9.2)
     websocket-driver (0.7.7)
       base64
@@ -1080,6 +1080,7 @@ DEPENDENCIES
   rubocop-rspec_rails
   sd_notify
   select2-rails!
+  shakapacker (= 6.0.0)
   shoulda-matchers
   sidekiq
   sidekiq-scheduler
@@ -1105,7 +1106,6 @@ DEPENDENCIES
   web!
   web-console
   webmock
-  webpacker (= 6.0.0.rc.6)
   whenever
   wicked_pdf
   wkhtmltopdf-binary

package.json

@@ -7,14 +7,19 @@
   },
   "license": "AGPL-3.0",
   "dependencies": {
+    "@babel/core": "^7.28.5",
+    "@babel/plugin-transform-runtime": "^7.28.5",
+    "@babel/preset-env": "^7.28.5",
+    "@babel/runtime": "^7.28.4",
     "@floating-ui/dom": "*",
     "@hotwired/stimulus": "*",
     "@hotwired/turbo": "*",
-    "@rails/webpacker": "^6.0.0-rc.6",
     "@stimulus-components/rails-nested-form": "*",
+    "babel-loader": "^10.0.0",
     "cable_ready": "5.0.6",
     "coffee-loader": "^5.0.0",
     "coffeescript": "^2.7.0",
+    "compression-webpack-plugin": "^11.1.0",
     "css-loader": "^7.1.2",
     "css-minimizer-webpack-plugin": "^7.0.4",
     "flatpickr": "*",
@@ -37,17 +42,22 @@
     "sass-embedded": "^1.96.0",
     "sass-loader": "^16.0.6",
     "select2": "*",
+    "shakapacker": "6.0.0",
     "shortcut-buttons-flatpickr": "*",
     "stimulus": "*",
     "stimulus-autocomplete": "*",
     "stimulus-flatpickr": "*",
     "stimulus_reflex": "3.5.5",
     "style-loader": "^4.0.0",
+    "terser-webpack-plugin": "^5.3.16",
     "tom-select": "*",
     "trix": "*",
     "turbo_power": "*",
-    "webpack": "^5.53.0",
-    "webpack-cli": "^4.8.0"
+    "webpack": "^5.104.0",
+    "webpack-assets-manifest": "^6.5.0",
+    "webpack-cli": "^6.0.1",
+    "webpack-merge": "^6.0.1",
+    "webpack-sources": "^3.3.3"
   },
   "babel": {
     "presets": [