Examples

Examples you can run in this tab.

Eight small projects across NanoVM's four runners — Node.js on the host JS engine, BusyBox on the RISC-V VM, a wasm32-wasip1 CLI and the Boa sandbox. Each page explains the example, shows its source and runs it end to end when you press Run. Nothing is downloaded before that.

All examples

hello-node

Hello, Node.js — in the browser

Pure Node.js, zero dependencies — run with nano.node() in this tab.

node · host JS engineOpen and run →cli-toolkit

An npm-package CLI (commander + chalk) on the real Node.js

commander + chalk from a lockfile, run by the real Node.js on the RISC-V VM.

riscv · RISC-V VMOpen and run →json-api

A Node.js HTTP server + dashboard, previewed in the page

A Node http server with a JSON API, previewed in an iframe.

node · host JS engineOpen and run →react-studio

A Vite-built React 19 app, served from NanoVM

React 19 + Vite build, served by Node into a live preview.

node · host JS engineOpen and run →flow-studio

React Flow + Tailwind + shadcn/ui, served from NanoVM

React Flow + Tailwind v4 + shadcn/ui, built with Vite, served by Node.

node · host JS engineOpen and run →photon

Image processing with a wasm32-wasip1 CLI

A Rust image CLI on the wasm runner: JPEG in, filtered PNG out.

wasm · wasm32-wasip1Open and run →boa-sandbox

Sandboxed JavaScript with capability grants (Boa)

Untrusted JS in the Boa interpreter, with explicit capability grants.

boa · sandboxed JSriscv · RISC-V VMOpen and run →cross-tier

Three runners, one filesystem: a cross-tier handoff

Node writes, BusyBox on RISC-V reads, Boa reads — one shared VFS.

node · host JS engineriscv · RISC-V VMboa · sandboxed JSOpen and run →

Reproducible

Built from source, checked in CI.

Every example lives in demos/<id>/ of the website repository. Dependencies are pinned by each example's package-lock.json; the files the pages load from /demo-files/<id>/ are generated from those sources, and a fresh build must match them byte for byte.

bash

# in a checkout of the website repo
npm ci
npm run demos:build    # npm ci + build every demos/<id>/ → public/demo-files/<id>/
npm run demos:verify   # fresh install + build, compared with the committed output