# nanojsx/nano

🎯 SSR first, lightweight 1kB JSX library.

Repository: https://github.com/nanojsx/nano
Canonical: https://ross.abutalabs.com/products/nanojsx-nano
Homepage: http://nanojsx.io
Language: TypeScript
License: MIT
License Family: permissive
Topics: jsx, ssr, deno, node, isomorphic, nano
Last push: 2025-11-27T20:13:51+00:00

## Health v2 (maintenance only)
Score: 57/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 54, release rhythm 35, longevity 100
- inputs: {"age_days": 2263, "days_push": 279, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1623, forks 40 (observed 2026-08-28T04:05:12.659968+00:00)

## What it is
Nano JSX is an ultra-lightweight (~1kB) JSX library written in TypeScript that renders server-side first and hydrates only the parts that need interactivity. It has no Virtual DOM, works isomorphically on Node.js and Deno, and is designed for building fast MPAs and SPAs.

## Use cases
- build a lightweight jsx app without react
- server-side render jsx pages with tiny client bundles
- partial hydration for fast mobile page loads
- build fast multi-page applications with jsx
- run the same jsx components on node and deno
- mix vanilla js dom manipulation with jsx components
- replace react with a 1kb jsx alternative

## When to choose
- bundle size and first-paint performance are critical
- you want SSR-first rendering with partial hydration
- you prefer direct DOM control over a virtual DOM
- you need isomorphic components on Node.js or Deno

## When to avoid
- you need a large ecosystem of third-party components and tooling
- you rely on automatic component re-rendering and rich lifecycle behavior
- you need mature devtools, hot reloading, or a big community
- your team is heavily invested in React patterns and libraries

## Facets
- artifact type: library
- maturity: active
- function: ssr, frontend-framework, ui-components, templating, routing
- domain: web-development, frontend
- platform: browser, cross-platform
- tags: jsx, no-virtual-dom, partial-hydration, isomorphic, lightweight, typescript, spa, mpa, nodejs, deno

## Member repositories
- nanojsx/nano (main) score 57

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:12.659968+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:48:53.498782+00:00, confidence not recorded.
  - readme: https://github.com/nanojsx/nano (fetched 2026-08-28T04:05:12.659968+00:00, sha 5cb137784d69)
  - homepage: http://nanojsx.io (fetched 2026-08-29T11:21:52.013868+00:00, sha 8c98d19305d8)
  - site_page: https://nanojsx.io/docs.html (fetched 2026-08-29T11:21:52.023133+00:00, sha 5b737807dbd7)
- Data as of 2026-08-30T08:39:29.467469+00:00.