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@flightdev/ui-react

v1.1.0

Published

React 18+ SSR adapter for Flight Framework - streaming, hydration, islands

Readme

@flightdev/ui-react

React 18+ SSR adapter for Flight Framework. Provides server-side rendering with streaming, hydration, and islands architecture support.

Table of Contents


Installation

npm install @flightdev/ui @flightdev/ui-react

Peer dependencies:

npm install react react-dom

Quick Start

import { defineUI } from '@flightdev/ui';
import { react } from '@flightdev/ui-react';

const ui = defineUI(react());

const result = await ui.adapter.renderToString({
    component: App,
    props: { user: { name: 'John' } },
});

console.log(result.html);

SSR Options

Configure the React adapter with options:

import { react } from '@flightdev/ui-react';

const adapter = react({
    streaming: true,
    serverComponents: false,
    onError: (error) => {
        console.error('[SSR Error]', error.message);
    },
    onShellReady: () => {
        console.log('Shell rendered');
    },
});

Available Options

| Option | Type | Default | Description | |--------|------|---------|-------------| | streaming | boolean | false | Enable streaming SSR | | serverComponents | boolean | false | Enable React Server Components | | onError | function | - | Error callback for SSR errors | | onShellReady | function | - | Callback when shell is ready |


Streaming SSR

React 18 supports streaming SSR with Suspense boundaries:

import { react } from '@flightdev/ui-react';

const adapter = react();

function App({ user }) {
    return (
        <main>
            <h1>Welcome, {user.name}</h1>
            <Suspense fallback={<Spinner />}>
                <UserDashboard userId={user.id} />
            </Suspense>
        </main>
    );
}

const { stream, done, abort } = adapter.renderToStream(
    { component: App, props: { user } },
    { url: request.url },
    {
        timeout: 10000,
        onShellReady: () => {
            response.writeHead(200, {
                'Content-Type': 'text/html',
                'Transfer-Encoding': 'chunked',
            });
        },
        onError: (error) => {
            console.error('[Stream Error]', error);
        },
    }
);

const reader = stream.getReader();
while (true) {
    const { done: readerDone, value } = await reader.read();
    if (readerDone) break;
    response.write(value);
}
response.end();

Islands Architecture

Create interactive islands within static content:

const adapter = react();

const profileIsland = adapter.createIsland(
    'UserProfile',
    { userId: '123' },
    {
        hydrate: 'visible',  // Hydrate when visible in viewport
        priority: 10,
    }
);

const html = `
<div class="page">
    <header>Static content</header>
    ${profileIsland.placeholder}
    <footer>Static content</footer>
</div>
`;

Hydration Strategies

| Strategy | Description | |----------|-------------| | idle | Hydrate when browser is idle | | visible | Hydrate when element is visible | | interaction | Hydrate on first user interaction | | media | Hydrate based on media query |


React Server Components

Enable React Server Components for zero-bundle server rendering:

const adapter = react({
    serverComponents: true,
});

// Server Component (no client JS)
async function UserList() {
    const users = await db.users.findMany();
    return (
        <ul>
            {users.map(user => (
                <li key={user.id}>{user.name}</li>
            ))}
        </ul>
    );
}

Hydration

Generate hydration scripts for client-side interactivity:

const result = await adapter.renderToString({
    component: App,
    props: { data },
});

const hydrationScript = adapter.getHydrationScript(result);

const html = `
<!DOCTYPE html>
<html>
<body>
    <div id="app">${result.html}</div>
    ${hydrationScript}
</body>
</html>
`;

Progressive Hydration

React 18 supports progressive hydration with hydrateRoot:

// Client entry
import { hydrateRoot } from 'react-dom/client';

const container = document.getElementById('app');
const root = hydrateRoot(container, <App {...window.__FLIGHT_DATA__.props} />);

API Reference

react(options?)

Create a React adapter instance.

function react(options?: ReactAdapterOptions): ReactAdapter;

ReactAdapter

| Method | Description | |--------|-------------| | renderToString(component, context?) | Render to HTML string | | renderToStream(component, context?, options?) | Render to readable stream | | getHydrationScript(result) | Generate hydration script | | getClientEntry() | Get client entry code | | createIsland(name, props, options?) | Create an island |

Capabilities

| Capability | Supported | |------------|-----------| | Streaming | Yes | | Partial Hydration | Yes | | Islands | Yes | | Resumable | No | | SSG | Yes | | CSR | Yes | | Server Components | Yes |


License

MIT