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WildflowerJS Reactive JS, No BS*

A no-build reactive JavaScript framework, rooted in the web platform.
No build step. No dependencies. No compromises.

Latest release: v1.4.1 · see what's new
<script src="wildflower.min.js"></script> ...and start building.

Back to Basics

With WildflowerJS, you write 100% standard code. HTML stays HTML. JavaScript stays JavaScript. CSS stays CSS. There's no JSX, no templating language, no custom syntax to learn. If you know the standards, you already know how to use WildflowerJS.

WildflowerJS extends the web platform. It doesn't replace it.

Your Development Simplified

Because you develop with 100% web standards, every tool in your existing chain already understands the code: IDE, browser DevTools, linter, formatter, screen reader, SEO crawler. There's nothing to install, no custom file types, no sourcemaps. Save the file, refresh, and your change is live.

Just be a web developer.

Batteries Included: One Mental Model

Router, SSR, stores, computed properties, two-way binding, event modifiers, data pools, and TypeScript types, all built in, all speaking the same language. Learn data-bind once and you know binding everywhere: in lists, pools, stores, plugins. There's no five-library stack to keep in sync.

One script tag. Everything you need.

<div data-component="counter">
  <span data-bind="count"></span>
  <button data-action="increment">
    +1
  </button>
</div>

<script>
wildflower.component('counter', {
  state: { count: 0 },
  increment() { this.count++ }
})
</script>

How It Works

data-bind connects state to the DOM.

data-action connects events to methods.

this.count++ triggers a precise DOM update.

Mutate state. The DOM updates.

Two Reactivity Modes

data-list is for automatic reactivity: mutate state, the DOM updates. data-pool is for explicit control: plain objects, zero proxy overhead, you say what changed.

Same template syntax. Different performance profile. From interactive forms to per-frame particle systems. You choose the right tradeoff for the job.

Try it. Right-click, inspect this demo. Every dot is a real DOM element.

See full demo →

Get Started View Demos
* Build Step

Zero Toolchain

Modern frameworks ask you to install a compiler, a bundler, a package manager, hundreds of fragile transitive dependencies, and a framework-specific file format, before you write a single line of your application.

WildflowerJS was built starting from a single principle: no build step, no tooling. Ever.

WildflowerJS asks you to add a script tag.

There's no CLI scaffolding step, no config files, no .vue/.jsx/.svelte source format. You don't debug through sourcemaps or wait on a build pipeline. Your project has zero dependencies.

Performance isn't a tradeoff. Build steps optimize bundle delivery, not the runtime work that follows it. WildflowerJS writes directly to the DOM, with no virtual DOM or reconciliation pass between state change and update, so it doesn't need a build step to be fast.

The framework is full-featured without the toolchain: router, SSR, stores, computed properties, transitions, pools. You don't need a toolchain to use any of it.

my-app/
  index.html
  app.js
  style.css
  wildflower.min.js

That's the entire project. No package.json, no node_modules, no config files. NONE of that.

Zero Install. Zero Attack Surface.

Every dependency you install is trust extended to a maintainer you've never met, running scripts on your dev machine and in your CI. A typical React + Vite + UI‑lib setup pulls in 300+ transitive packages before you write a feature.

Each one is a potential intrusion vector. NPM worms, OAuth chains compromising deploy platforms, postinstall hijacking: the supply chain is now where production code gets compromised, not the deploy. And signing isn't a backstop: Mini Shai‑Hulud (May 2026) compromised 170+ packages whose malicious versions carried valid SLSA Build Level 3 provenance, because the attestation came from build infrastructure the worm had already taken over.

WildflowerJS users don't have this attack surface. There is no npm install, no postinstall script, no transitive package graph. The framework is one file you copy or pin by hash.

As of v1.1, the same holds for building the framework itself. WildflowerJS bundles with a vendored rollup and terser pipeline pulled as three SHA‑512‑pinned tarballs: no npm install, no transitive packages in the build path. The entire toolchain is three files verified by hash.

Zero dependencies is the absence of a problem the rest of the industry has not properly addressed.

A typical React/Vue project:

  npm install
  ├── hundreds of packages
  ├── from hundreds of maintainers
  ├── postinstall scripts run on install
  └── tens to hundreds of MB of transitive code

WildflowerJS:

  <script src="wildflower.min.js"></script>
  └── 1 file.
      No transitive dependencies.

Zero Compromise

WildflowerJS doesn't compromise performance for ease-of-use. Even with no build step, on the js-framework-benchmark, WildflowerJS performs at the level of frontier frameworks, level with the fastest signal-based frameworks across list creation, updates, selection, swaps, and removal. And for per-frame workloads, data pools lead every framework we tested in our Lorenz attractor simulation demo.

The charts here are the overall geomean standings and the operation breakdown from our latest full-field run, plus the sustained frame rate from our per-frame animation sweep. Click any chart to see it full size.

Delivery is fast too, because there's less to deliver. One file, no framework runtime split across chunks, no hydration pass. Lighthouse scores hold their own against compiled frameworks without a single build artifact.

Simplicity in the interface, performance in the implementation. WildflowerJS doesn't trade one for the other.

Benchmark setup for these charts: js-framework-benchmark operations 1 through 9, 15 samples per cell, all frameworks in a single run; total-duration medians, lower is better. The frame-rate chart runs each framework's fastest variant on the Lorenz attractor for 8 seconds per particle count, fullscreen on a 120 Hz panel; higher is better. Apple M5 Pro, 24 GB RAM, macOS 26.5.2, Google Chrome 150 (stable, headed).

Bar chart of geomean slowdown versus the fastest framework per operation, vanilla JS baseline 1.00: WF-pool 1.054, Vue Vapor 1.056, Solid 1.095, WF 1.120, Svelte 1.165, Vue 1.263. Lower is better.
Geomean slowdown vs fastest per operation. Lower is better.
Grouped bar chart of all nine js-framework-benchmark operations for Solid, Svelte, Vue, Vue Vapor, WF, and WF-pool, with per-operation rankings. WF-pool is fastest on most operations.
All nine operations, side by side. Stars mark the fastest.
Line chart of sustained FPS versus particle count on the Lorenz attractor for Solid, Svelte, Vue, Vue Vapor, WF, and WF-pool. WF-pool holds the highest frame rate at every count, staying above 60 FPS past 4500 particles.
Per-frame animation. Sustained FPS as particle count grows; higher is better.

Zero Lock-in

WildflowerJS works with the DOM, not instead of it. There's no virtual DOM intercepting your code and no compiler rewriting your markup. The render cycle is yours alone.

That means Leaflet, DataTables, Chart.js, D3, Three.js, any library that touches the DOM, just works. There are no wrapper packages or framework-specific escape hatches required. Drop in a script tag, it's ready to go.

Because your code is standard HTML and JavaScript, you're never locked in. Your skills transfer and your code is more portable. If you outgrow the framework, your knowledge doesn't expire.

This also means your "ecosystem" is all of the world of vanilla JS. Without compromises or hacks.

<!-- Use any library directly -->
<div data-component="map-view">
  <div id="map" style="height: 400px"></div>
</div>
wildflower.component('map-view', {
  state: { lat: 51.505, lng: -0.09 },
  init() {
    // Leaflet works as-is. No wrappers.
    this._map = L.map('map')
      .setView([this.lat, this.lng], 13);
    L.tileLayer('https://{s}.tile.osm.org'
      + '/{z}/{x}/{y}.png').addTo(this._map);
  }
})

Precise Reactivity

When you write this.count++, WildflowerJS updates the single DOM node bound to count. Nothing else is touched. There's no tree diffing or reconciliation pass to figure that out.

You get fine-grained updates and a simple mental model. Change a property, the bound element updates. That's the entire reactivity model.

Other frameworks ask you to learn signals, accessors, memos, effects, and subscription lifecycles to achieve what WildflowerJS does with a standard JS property assignment.

wildflower.component('dashboard', {
  state: {
    users: 1420,
    status: 'healthy'
  },
  computed: {
    summary() {
      return this.users + ' users, ' + this.status;
    }
  },
  refresh() {
    this.users = 1421;
    // Only the elements bound to 'users'
    // and 'summary' update. Everything
    // else on the page is untouched.
  }
})

One Reactivity Model. Everywhere.

Components, Stores, and Plugins, Pools, and now Data Queries all share the same reactive foundation. State, computed properties, and methods work identically no matter where they live. Learn it once, it works the same way across all of those entities.

Other frameworks make you learn a different system for each layer. React components use hooks, but stores need Redux or Zustand, which are completely different APIs. Vue components use reactive data, but Pinia stores have their own patterns. Every layer is a new mental model.

In WildflowerJS, there's one model. A store is a component without a template. A plugin is an entity that extends the framework itself, adding directives, lifecycle hooks, and services. The same this.count++ triggers the same reactivity everywhere.

This unlocks patterns other frameworks can't express. A store can run headless physics simulations with tick(), feeding data into a component that renders it through a pool, all using the same reactive primitives, no glue code required.

// Component: reactive UI
wildflower.component('cart', {
  state: { items: [] },
  computed: {
    total() { return this.items.length; }
  }
})

// Store: global shared state
wildflower.store('user', {
  state: { name: '', role: 'guest' },
  computed: {
    isAdmin() { return this.role === 'admin'; }
  }
})

// Plugin: extends the framework
wildflower.plugin({
  name: 'notifications',
  state: { items: [], unreadCount: 0 },
  computed: {
    hasUnread() { return this.unreadCount > 0; }
  },
  add(msg) { this.items.push(msg); this.unreadCount++; }
})
// Access globally: wildflower.$notifications.add(...)

// Same state. Same computed. Same methods.

Live Server Data: Built In, Stays True

With WildflowerJS SSR, the page arrives already true. The server (your server, whatever back-end you prefer) renders your data into real HTML, so the first paint is real content, indexable and readable before a line of JavaScript runs. And because the markup is genuine HTML, hydration reads the page's state straight back out of the document. Server-rendered components end up exactly equivalent to client-rendered ones.

v1.3 brings data-query, which does for the rest of the page's life what SSR does for first load. Most frameworks hand you fetch() and leave the rest to you. There's an entire ecosystem of client data libraries that exists to fill that gap. WildflowerJS makes it a declaration instead. Name a source, point an element at it, say how fresh it should stay. Loading and error states, refresh on demand, request racing, and the whole refresh ladder (poll, conditional GET, focus, reconnect, server push) come with it. Oh, and there's no query language. Refinement is an ordinary computed property, and filtering happens client-side without a network round trip.

Together, Wildflower's SSR and data-query tell one story. The server renders the page with real data. Because hydration reads the page itself, there's no flash of empty content, no loading spinner over data the user can already see, and no hydration scripts locking up the main thread. The server's render is the actual UI. When paired with data-query, your SSR becomes the first result of a standing query. The query adopts that markup and keeps it updated from there.

And as you can see in the example, your markup is 100% HTML. What you see is what you get.

<div data-component="product-board">
  <p data-show="$products.isLoading">
    Loading…
  </p>
  <p data-show="$products.error">
    Failed.
    <button data-action="retry">Retry</button>
  </p>

  <span data-bind="$products.count"></span>
  products

  <tbody data-query="products">
    <template>
      <tr>
        <td data-bind="name"></td>
        <td data-bind="stock"></td>
      </tr>
    </template>
  </tbody>
</div>
// The entire data layer:
wildflower.query('products', {
  from: '/api/products',
  key: 'id',
  refresh: ['focus', 'etag:60']
});

// Server-rendered page? Add data-ssr="true"
// and the markup the server sent becomes the
// query's first result. Live from there.

Data Pools

Every framework wraps collection items in reactive proxies, whether the item needs it or not. WildflowerJS gives you a choice: data-list for push reactivity (automatic), data-pool for pull reactivity (explicit control, zero proxy overhead).

Pools render plain objects with the same template syntax as lists. Mutate the object, call markDirty(), and only that item updates. Full CRUD, selection, bulk operations, all faster than the push-reactive path.

And because pools use pull-based rendering, they scale to simulations, games, particle systems, and data visualizations at native frame rate. Use cases that would choke a virtual DOM. No other framework has anything like this.

<div data-component="user-table">
  <tbody data-pool="users" data-key="id">
    <template>
      <tr>
        <td data-bind="name"></td>
        <td data-bind="status"
            data-bind-class="status === 'active'
              ? 'badge success'
              : 'badge inactive'"></td>
      </tr>
    </template>
  </tbody>
</div>
wildflower.component('user-table', {
  pools: { users: {} },

  init() {
    // Populate: plain objects, no proxies
    data.forEach(u => this.pools.users.add(u));
  },

  // Optional: add tick() and the same pool
  // renders every frame. Same template, same
  // data, different rendering frequency.
  // That's the only difference between a
  // display table and a particle system.
})

Built for AI-Assisted Development

Because WildflowerJS is standard HTML and JavaScript, AI code assistants already know how to write it. There's no custom syntax to hallucinate or compiler quirks to work around. The code an AI generates runs exactly as written, with no build step between generation and execution.

WildflowerJS ships an AI-optimized reference page with patterns, anti-patterns, and examples designed for code generation context windows. Our llms.txt file follows the llms.txt convention for machine-readable documentation.

And for structured app generation, our Universal App Manifest lets you describe an entire application as a JSON schema (components, state, computed properties, methods, templates) and have an AI generate the working code from the manifest, mediated through framework-specific idiom files.

You: "Build me a todo app with
WildflowerJS"

AI reads llms.txt or ai-assistant.html
     ↓
Generates standard HTML + JS
     ↓
<div data-component="todo-app">
  <input data-model="newItem">
  <button data-action="addItem">
    Add
  </button>
  <ul data-list="items">
    <template>
      <li data-bind="text"></li>
    </template>
  </ul>
</div>
     ↓
Open in your browser. It works, and you can read and understand the code.

DevTools DEV BUILD

A WildflowerJS panel in your browser's developer tools. Inspect components, stores, pools, bindings, routes, events, and per-frame reactivity in a running app, with no configuration and no code changes.

Install once, works everywhere. Open your browser's DevTools on any page running WildflowerJS and a WildflowerJS tab appears alongside Elements and Console. There is nothing to add to your app, no plugin to register, and no build flag to set.

Installing

Chrome, Edge, Brave

Install from the Chrome Web Store. The extension works in any Chromium browser that accepts Web Store extensions.

Chrome Web Store
Firefox

The extension supports Firefox 109+ and an AMO listing is pending. Until then, load it unpacked from the repository via about:debugging.

Load unpacked

Requirements

The framework exposes a DevTools hook that the extension reads. That hook is development-only: production builds strip it entirely so there is zero runtime overhead in shipped apps.

RequirementDetail
Framework versionWildflowerJS 1.1 or later. The Timeline panel needs 1.2 or later.
Build typeA development build: any .js distribution file. The minified .min.js builds strip the hook.
DeliveryCDN and npm builds both work, as long as the file is a dev build.

If you open the panel against a production build, it tells you so rather than appearing broken: panels that need the stripped hooks explain that the page is running a minified build and name the version they found.

<!-- Development: hook present, DevTools works -->
<script src="https://cdn.jsdelivr.net/npm/wildflowerjs@1/dist/wildflower.full.dev.js"></script>

<!-- Production: hook stripped, zero overhead -->
<script src="https://cdn.jsdelivr.net/npm/wildflowerjs@1/dist/wildflower.full.min.js"></script>

The panels

PanelWhat it shows
Components The mounted component tree, with each component's state, computed values, and props. State is editable in place.
Stores Every registered store with its state and methods.
Pools data-pool entities and their per-entity state, for high-frequency and animation workloads.
Bindings The active data-* bindings on the page and what each one reads. Useful when a binding is not updating and you need to confirm what it is actually watching.
Routes The current route, the route tree, and navigation guards.
Events A live, filterable activity log: component mounts and teardowns, state changes with the exact keys that changed, store updates, and route changes, each timestamped.
Timeline A per-frame record of reactive flush activity: how many effects drained each frame and how long the render sweep took, so you can see where frame time goes. Requires 1.2+.

Working from the Console

The $wf shortcut

Selecting a component in the Components panel sets $wf in the Console to that component's context, the same object this refers to inside its methods. Read state, call methods, and assign to properties; assignments go through the reactive system exactly as they would in your code, so the DOM updates.

$wf.count            // read state
$wf.count = 10       // write state — the DOM updates
$wf.increment()      // call a method
$wf.fullName         // read a computed property

With no component selected, $wf is the framework object itself.

wildflower.inspect()

A console helper that needs no extension. Called with no arguments it prints an application summary and returns { components, stores }. Called with a component name it lists every instance of that component with its element and state, and returns the instances array.

wildflower.inspect()              // full application summary
wildflower.inspect('kpi-widget')  // every instance of one component

Panel controls

  • Element picker — click an element on the page to jump to its owning component in the Components panel.
  • Refresh — re-read application state. The panel polls, but a manual refresh is available after large changes.
  • Theme toggle — light and dark, independent of your DevTools theme.

Privacy

The extension reads application state through the browser's standard DevTools inspection API and renders it locally in the panel. It collects nothing, sends nothing to any server, and makes no network requests of its own. Closing DevTools discards the data.

Permissions used are chrome.devtools.inspectedWindow and chrome.devtools.panels, both scoped to the tab you are inspecting. Full detail in the privacy policy.

Troubleshooting

SymptomCause
No WildflowerJS tab in DevTools The page is not running WildflowerJS, or the extension needs DevTools reopened after install. Close and reopen DevTools.
Panel says a development build is required The page is running a .min.js build, which strips the hook. Switch to the matching .js dev build in development.
Timeline is empty Timeline needs WildflowerJS 1.2 or later. The panel reports the version it found.
Components panel is empty on a page you know uses the framework Components initialise on the first animation frame. In a background tab that frame never runs, so nothing has mounted yet. Focus the tab and refresh the panel.
Related: Error Codes for the WF-coded diagnostics development builds emit, and Testing for driving components from a test rather than by hand.