Mochi

An SSR framework for Svelte 5 on Bun with islands-based selective hydration. Components render server-side on every request; only those marked mochi:hydrate (or mochi:hydrate:visible / mochi:defer) ship JavaScript to the browser.

Early prototype. Only use in production if you are brave!

Install

bun create mochi@latest        # scaffold a new project
# or
bun add mochi-framework        # add to an existing Bun project

Mochi runs on Bun. Node.js is not supported.

Minimal example

// src/index.ts
import { Mochi } from 'mochi-framework';

await Mochi.serve({
  port: 3000,
  routes: {
    '/': Mochi.page('./src/App.svelte'),
  },
});

<!-- src/App.svelte --><h1>Hello Mochi</h1>

bun run src/index.ts

Docs

Full documentation lives at packages/docs/ — intro, routes, selective hydration, server islands, forms, middleware, caching, events, and more. Served at /docs/<section> when you run the demo site (bun run dev in the monorepo).

License

MIT