Quick Start

# Create a project
npx tina4js create my-app

# With optional CSS framework
npx tina4js create my-app --css

# With PWA support
npx tina4js create my-app --css --pwa

# Run it
cd my-app && npm install && npm run dev

Open http://localhost:3000 -- your app is running.

What's Included

Every module is built from scratch -- no node_modules bloat, no third-party runtime dependencies.

| Module | Gzipped | What it does | |--------|---------|-------------| | Core | 1.51 KB | Signals, computed, effect, batch, html tagged templates, Tina4Element web components | | Router | 0.12 KB | Client-side SPA routing, path params ({id}), guards, history/hash mode | | API | 1.49 KB | Fetch client with auth (Bearer + formToken + FreshToken rotation), interceptors, per-request headers/params | | WebSocket | 0.91 KB | Signal-driven status, auto-reconnect with exponential backoff, pipe() to signal, JSON auto-parse | | PWA | 1.16 KB | Service worker + manifest generation, cache strategies (network-first, cache-first, stale-while-revalidate) | | Debug | 5.11 KB | Dev overlay (Ctrl+Shift+D) -- signals, components, routes, API panels |

238 tests across 10 test files. Zero dependencies. Under 3KB for the full core.

For full documentation visit tina4.com/javascript.

Install

npm install tina4js

Or use via CDN with zero build tools:

<script type="module">
  import { signal, html } from 'https://cdn.jsdelivr.net/npm/tina4js/dist/tina4.es.js';
</script>

Getting Started

1. Create a project

npx tina4js create my-app --css
cd my-app && npm install

This creates:

my-app/
  index.html              # Entry point
  package.json            # Dependencies: tina4js, vite, typescript
  src/
    main.ts               # App entry -- imports routes, starts router
    routes/
      index.ts            # Route definitions
    pages/
      home.ts             # Home page handler
    components/
      app-header.ts       # Example web component
    public/
      css/
        default.css       # Default styles

2. Create a signal

import { signal, computed, html } from 'tina4js';

const count = signal(0);
const doubled = computed(() => count.value * 2);

const view = html`
  <button @click=${() => count.value--}>-</button>
  <span>${count}</span>
  <button @click=${() => count.value++}>+</button>
  <p>Doubled: ${doubled}</p>
`;

document.body.append(view);

3. Create a route

import { route, router, html } from 'tina4js';

route('/', () => html`<h1>Home</h1>`);
route('/user/{id}', ({ id }) => html`<h1>User ${id}</h1>`);
route('/admin', {
  guard: () => isLoggedIn() || '/login',
  handler: () => html`<h1>Admin</h1>`,
});
route('*', () => html`<h1>404</h1>`);

router.start({ target: '#root', mode: 'history' });

4. Create a component

import { Tina4Element, html, signal } from 'tina4js';

class MyCounter extends Tina4Element {
  static props = { label: String };
  static styles = `:host { display: block; }`;

  count = signal(0);

  render() {
    return html`
      <span>${this.prop('label')}: ${this.count}</span>
      <button @click=${() => this.count.value++}>+</button>
    `;
  }
}

customElements.define('my-counter', MyCounter);

<my-counter label="Clicks"></my-counter>

5. Talk to your backend

import { api } from 'tina4js';

api.configure({
  baseUrl: '/api',
  auth: true,  // Bearer + formToken (tina4-php/python compatible)
});

const users = await api.get('/users');
const user  = await api.get('/users/42');
const result = await api.post('/users', { name: 'Andre' });

// Query params
const admins = await api.get('/users', {
  params: { role: 'admin', active: true },
});

// Per-request headers
const data = await api.get('/data', {
  headers: { 'X-API-Version': '2' },
});

// Interceptors
api.intercept('response', (res) => {
  if (res.status === 401) navigate('/login');
  return res;
});

6. Real-time with WebSocket

import { ws, signal } from 'tina4js';

const socket = ws.connect('wss://api.example.com/ws');
const messages = signal([]);

socket.pipe(messages, (msg, current) => [...current, msg]);

// Reactive signals
socket.status.value;     // 'connecting' | 'open' | 'closed' | 'reconnecting'
socket.connected.value;  // boolean
socket.send({ type: 'ping' }); // auto-JSON
socket.close(); // intentional -- no reconnect

7. Make it a PWA

import { pwa } from 'tina4js';

pwa.register({
  name: 'My App',
  shortName: 'App',
  themeColor: '#1a1a2e',
  cacheStrategy: 'network-first',
  precache: ['/', '/css/default.css'],
});

8. Debug everything

// Dev-only — tree-shaken out of production builds
if (import.meta.env.DEV) import('tina4js/debug');

Toggle with Ctrl+Shift+D. Shows live signal values, mounted components, route history, and API calls.

Deployment Modes

| Mode | Description | |------|-------------| | Standalone | npm run build → deploy dist/ to any static host | | tina4-php | npm run build → JS bundle into src/public/js/ | | tina4-python | npm run build → JS bundle into src/public/js/ | | Islands | No SPA — hydrate individual web components in server-rendered pages |

Live Gallery

9 real-world examples you can learn from, copy, and build on:

1. Admin Dashboard -- reactive KPIs, polling, notification feed
2. Contact Manager -- full CRUD with search/filter
3. Real-time Chat -- WebSocket with typing indicators
4. Auth Flow -- JWT login, protected routes, token refresh
5. Shopping Cart -- shared signals, computed totals, localStorage
6. Dynamic Form Builder -- drag fields, live preview, JSON export
7. PWA Notes -- offline-capable, installable
8. Data Table -- sort, search, pagination
9. Live Search -- debounced API calls

Development

npm test          # run all tests (238 passing)
npm run test:watch # watch mode
npm run build     # production build
npm run build:types # TypeScript declarations
npm run dev       # dev server with HMR

Changelog

1.0.12

• Added comprehensive boolean attribute tests (opposing pairs, inside reactive blocks, computed, multi-signal)

1.0.11

• Fix: ?attr=${() => expr} now calls the function reactively instead of treating it as truthy

1.0.9

• Fix: All @event handlers auto-wrapped in batch() -- one re-render per handler, no mid-event DOM rebuilds

1.0.8

• Added --css flag to tina4js create for optional tina4-css integration
• Added gallery of 9 real-world examples

1.0.7

• Added WebSocket module with signal-driven auto-reconnect and pipe()
• Fixed effect error isolation, API tracker bugs, added per-request headers/params
• 231 tests across 10 test files

1.0.5

• Fixed effect subscription cleanup and inner effect disposal on re-evaluation

License

MIT

tina4-js — This is not a framework. tina4.com