diff --git a/.circleci/config.yml b/.circleci/config.yml
index 988d9f5c4..e00d8173b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -57,6 +57,10 @@ jobs:
       - node/install-packages:
           pkg-manager: pnpm
 
+      - run:
+          name: Build JS assets
+          command: pnpm build
+
       - run:
           name: Wait for DB
           command: dockerize -wait tcp://localhost:5432 -timeout 1m
diff --git a/.gitignore b/.gitignore
index ec78b324d..c05bd90d3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,4 +30,7 @@ spec/examples.txt
 *.local
 .env
 
+/app/assets/builds/*
+!/app/assets/builds/.keep
+
 /node_modules
diff --git a/Gemfile b/Gemfile
index fb40687b5..c9afd2a8c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -15,6 +15,7 @@ gem "feedbag"
 gem "feedjira"
 gem "good_job", "~> 4.13.0"
 gem "httparty"
+gem "jsbundling-rails"
 gem "nokogiri", "~> 1.19.0"
 gem "pg"
 gem "puma", "~> 7.0"
@@ -24,7 +25,6 @@ gem "sprockets"
 gem "sprockets-rails"
 gem "stripe"
 gem "thread"
-gem "uglifier"
 gem "will_paginate"
 
 group :development do
diff --git a/Gemfile.lock b/Gemfile.lock
index bdeb193e4..96185a68a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -142,7 +142,6 @@ GEM
     erubi (1.13.1)
     et-orbi (1.4.0)
       tzinfo
-    execjs (2.10.0)
     factory_bot (6.5.6)
       activesupport (>= 6.1.0)
     feedbag (1.0.2)
@@ -178,6 +177,8 @@ GEM
       pp (>= 0.6.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
+    jsbundling-rails (1.3.1)
+      railties (>= 6.0.0)
     json (2.18.1)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
@@ -396,8 +397,6 @@ GEM
     tsort (0.2.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    uglifier (4.2.1)
-      execjs (>= 0.3.0, < 3)
     unicode-display_width (3.2.0)
       unicode-emoji (~> 4.1)
     unicode-emoji (4.2.0)
@@ -448,6 +447,7 @@ DEPENDENCIES
   feedjira
   good_job (~> 4.13.0)
   httparty
+  jsbundling-rails
   nokogiri (~> 1.19.0)
   pg
   pry-byebug
@@ -470,7 +470,6 @@ DEPENDENCIES
   sprockets-rails
   stripe
   thread
-  uglifier
   web-console
   webdrivers
   webmock
diff --git a/Procfile.dev b/Procfile.dev
new file mode 100644
index 000000000..0eb008ec8
--- /dev/null
+++ b/Procfile.dev
@@ -0,0 +1,2 @@
+web: PORT=3000 bundle exec puma -C config/puma.rb
+js: pnpm build --watch
diff --git a/app/assets/builds/.keep b/app/assets/builds/.keep
new file mode 100644
index 000000000..e69de29bb
diff --git a/app/assets/config/manifest.js b/app/assets/config/manifest.js
index 7d52bcf35..23bf581f9 100644
--- a/app/assets/config/manifest.js
+++ b/app/assets/config/manifest.js
@@ -1,3 +1,3 @@
 //= link_tree ../images
 //= link_directory ../stylesheets .css
-//= link_directory ../javascripts .js
+//= link_directory ../builds .js
diff --git a/app/assets/javascripts/application.js b/app/javascript/application.js
similarity index 96%
rename from app/assets/javascripts/application.js
rename to app/javascript/application.js
index 70ce426d6..534e9c57b 100644
--- a/app/assets/javascripts/application.js
+++ b/app/javascript/application.js
@@ -1,9 +1,16 @@
-//= require jquery.min.js
-//= require bootstrap.min.js
-//= require mousetrap.js
-//= require jquery.visible.min.js
-//= require underscore.js
-//= require backbone.js
+import "jquery";
+import "bootstrap";
+import "mousetrap";
+import "jquery-visible";
+import _ from "underscore";
+import Backbone from "backbone";
+
+/* global jQuery, Mousetrap */
+var $ = jQuery;
+
+window.$ = $;
+
+Backbone.$ = $;
 
 _.templateSettings = {
   interpolate: /\{\{=(.+?)\}\}/g,
@@ -337,3 +344,8 @@ $(document).ready(function() {
     $("#shortcuts").modal('toggle');
   });
 });
+
+window.StoryList = StoryList;
+window.AppView = AppView;
+
+export { Story, StoryView, StoryList, AppView };
diff --git a/bin/dev b/bin/dev
index 6981d9176..aac2f73c4 100755
--- a/bin/dev
+++ b/bin/dev
@@ -1,4 +1,8 @@
-#!/usr/bin/env ruby
-# frozen_string_literal: true
+#!/usr/bin/env bash
 
-exec "./bin/rails", "server", *ARGV
+if ! gem list foreman -i --silent; then
+  echo "Installing foreman..."
+  gem install foreman
+fi
+
+exec foreman start -f Procfile.dev "$@"
diff --git a/config/initializers/assets.rb b/config/initializers/assets.rb
index 182fd1ad4..e3b8d913d 100644
--- a/config/initializers/assets.rb
+++ b/config/initializers/assets.rb
@@ -7,13 +7,7 @@
 
 # Add additional assets to the asset load path.
 Rails.application.config.assets.paths += [
-  Rails.root.join("node_modules/backbone"),
-  Rails.root.join("node_modules/bootstrap/dist/js"),
   Rails.root.join("node_modules/bootstrap/dist/css"),
-  Rails.root.join("node_modules/jquery"),
-  Rails.root.join("node_modules/mousetrap"),
-  Rails.root.join("node_modules/underscore"),
-  Rails.root.join("node_modules/jquery-visible"),
   Rails.root.join("node_modules/@fontsource/lato/files"),
   Rails.root.join("node_modules/@fontsource/reenie-beanie/files"),
   Rails.root.join("node_modules/font-awesome/css"),
diff --git a/eslint.config.mjs b/eslint.config.mjs
index 53e5927fd..dbdcefb7f 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -4,15 +4,11 @@ import globals from "globals";
 export default [
   js.configs.recommended,
   {
+    files: ["app/javascript/**"],
     languageOptions: {
-      sourceType: "script",
+      sourceType: "module",
       globals: {
         ...globals.browser,
-        Backbone: "readonly",
-        _: "readonly",
-        $: "readonly",
-        jQuery: "readonly",
-        Mousetrap: "readonly",
       },
     },
     rules: {
@@ -25,6 +21,8 @@ export default [
     languageOptions: {
       sourceType: "module",
       globals: {
+        ...globals.browser,
+        jQuery: "readonly",
         Story: "readonly",
         StoryView: "readonly",
         StoryList: "readonly",
@@ -32,6 +30,6 @@ export default [
     },
   },
   {
-    ignores: ["vendor/", "coverage/", "spec/javascript/support/", "public/"],
+    ignores: ["vendor/", "coverage/", "spec/javascript/support/", "public/", "app/assets/builds/"],
   },
 ];
diff --git a/package.json b/package.json
index 7af7de1c1..ff3402d06 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,8 @@
 {
   "private": true,
   "scripts": {
-    "eslint": "eslint app/assets/javascripts/ spec/javascript/spec/",
+    "build": "esbuild app/javascript/*.* --bundle --sourcemap --format=iife --outdir=app/assets/builds --public-path=/assets --alias:jquery=./node_modules/jquery/jquery.js --alias:bootstrap=./node_modules/bootstrap/dist/js/bootstrap.js --alias:jquery-visible=./node_modules/jquery-visible/jquery.visible.min.js",
+    "eslint": "eslint app/javascript/ spec/javascript/spec/",
     "stylelint": "stylelint 'app/assets/stylesheets/**/*.css'",
     "test": "vitest run --coverage"
   },
@@ -19,6 +20,7 @@
   "devDependencies": {
     "@eslint/js": "^9.21.0",
     "@vitest/coverage-v8": "4.0.18",
+    "esbuild": "^0.27.1",
     "eslint": "^9.21.0",
     "globals": "^16.0.0",
     "jsdom": "^28.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 03afddc04..5d38a7fb4 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -42,6 +42,9 @@ importers:
       '@vitest/coverage-v8':
         specifier: 4.0.18
         version: 4.0.18(vitest@4.0.18(jsdom@28.0.0))
+      esbuild:
+        specifier: ^0.27.1
+        version: 0.27.3
       eslint:
         specifier: ^9.21.0
         version: 9.39.2
diff --git a/spec/javascript/setup.js b/spec/javascript/setup.js
index c0c930628..f2780e1be 100644
--- a/spec/javascript/setup.js
+++ b/spec/javascript/setup.js
@@ -1,7 +1,3 @@
-import fs from "node:fs";
-import path from "node:path";
-import vm from "node:vm";
-
 import "jquery";
 import underscore from "underscore";
 import Backbone from "backbone";
@@ -89,14 +85,9 @@ const templateHTML = [
 
 document.body.insertAdjacentHTML("beforeend", templateHTML);
 
-// Load application.js class definitions into the global scope
-const appJsPath = path.resolve(__dirname, "../../app/assets/javascripts/application.js");
-const appJs = fs.readFileSync(appJsPath, "utf-8");
-
-// Strip the sprockets require directives and the $(document).ready block
-const strippedJs = appJs
-  .replace(/^\/\/= require .+$/gm, "")
-  .replace(/_.templateSettings\s*=\s*\{[^}]+\};/, "")
-  .replace(/\$\(document\)\.ready\(function\(\)\s*\{[\s\S]*\}\);?\s*$/, "");
+import { Story, StoryView, StoryList, AppView } from "../../app/javascript/application.js";
 
-vm.runInThisContext(strippedJs, { filename: "application.js" });
+globalThis.Story = Story;
+globalThis.StoryView = StoryView;
+globalThis.StoryList = StoryList;
+globalThis.AppView = AppView;
diff --git a/vitest.config.js b/vitest.config.js
index 751b40944..e60bcb839 100644
--- a/vitest.config.js
+++ b/vitest.config.js
@@ -5,6 +5,9 @@ export default defineConfig({
   resolve: {
     alias: {
       jquery: path.resolve(__dirname, "node_modules/jquery/jquery.js"),
+      bootstrap: path.resolve(__dirname, "node_modules/bootstrap/dist/js/bootstrap.js"),
+      mousetrap: path.resolve(__dirname, "node_modules/mousetrap/mousetrap.js"),
+      "jquery-visible": path.resolve(__dirname, "node_modules/jquery-visible/jquery.visible.min.js"),
     },
   },
   test: {