New in Enhance: Browser JS Workflow

Taylor Beseda’s avatar

by Taylor Beseda

Axol and rollup.js

Forgive my digital illustration skills, but I will always use an opportunity to put Axol in a post.

The latest release of Enhance adds a convenient way to build browser JavaScript at deploy-time (and in real-time during development) to a helpful path where your project’s static assets are served. Developers can include third party Node modules, installed via npm, to use in their client-side code.

This new workflow is powered by Rollup’s node-resolve plugin. Conveniently, this engine can replace most use cases where the “@bundles” plugin has been used.

Zero config workflow

There’s no need to alter a config file. Author browser JavaScript in app/browser/ and your code is bundled/concatenated automatically. It’s then available to your front-end application at the /_public/pages/ route.

These “entrypoint” files can import any Node module installed to your project dependencies and will be rolled up with imported dependencies.

Show me some code!

Let’s add the Tiptap text editor to an Enhance project. Tiptap is a friendly, “headless” wrapper around ProseMirror, a rich content editor.

First install the Tiptap core library and the starter-kit extension:

npm install @tiptap/core @tiptap/starter-kit

Create app/browser/tiptap.mjs:

import { Editor } from '@tiptap/core'
import StarterKit from '@tiptap/starter-kit'

new Editor({
  element: document.querySelector('.editor'),
  extensions: [ StarterKit ],
  content: '<p>Hello World!</p>',

Finally, create a new page and add an HTML element with the class editor, a script tag, and some simple CSS - app/pages/editor.html:

  .editor {
    padding: 1rem;
    border: 1px solid SlateGray;
  .editor p {
    color: DarkGray;
    margin-bottom: 0.5rem;

<div class="editor"></div>

<script type="module" src="/_public/pages/tiptap.mjs" />

Start up your dev server and visit /editor, to see a fully functioning content editor ready for styling and integration via the Tiptap/ProseMirror API 🎉

Upgrade existing projects

When you update @enhance/arc-plugin-enhance to v4.3, you’ll automatically get the new JS workflow.

Try it out by creating an app/browser/ directory and adding a new my-feature.mjs file. When starting your development server, Enhance will build your browser code to the public/pages/ folder.

Import “my-feature” from your client-side app by including the script in HTML views where that specific JS enhancement is needed:

<script type="module" src="/_public/pages/my-feature.mjs">

Or as a part of a specific element’s <script> tag:

<script type="module">
import myFeature from '/_public/pages/my-feature.mjs'
// ...
🚧 Be sure to add the `public/pages/` path to your `.gitignore` file -- see our base .gitignore here.

Rollup powered

The Enhance team chose rollup.js, specifically the node-resolve plugin, for its emphasis on simplicity and compatibility. The net change in Enhance’s codebase is minimal but very powerful.

Rollup’s description of their plugin says it best:

🍣 A Rollup plugin which locates modules using the Node resolution algorithm, for using third party modules in node_modules

Combined with Rollup’s base features, this addition to Enhance will streamline the process of building front-end features with third party Node modules.


Do you plan to use this new workflow? Either way, we’d love to hear about your project. Connect in our Discord server or on Mastodon