# anmonteiro/lumo

Fast, cross-platform, standalone ClojureScript environment

Repository: https://github.com/anmonteiro/lumo
Canonical: https://ross.abutalabs.com/products/lumo
Language: Clojure
License: EPL-1.0
License Family: copyleft
Topics: clojurescript, lumo, clojure, javascript, repl, self-hosted, cross-platform
Archived: true
Last push: 2022-05-16T17:17:30+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3627, "days_push": 1570, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1873, forks 82 (observed 2026-08-28T04:05:47.156404+00:00)

## What it is
Lumo is a standalone, cross-platform ClojureScript REPL and environment that runs on Node.js and V8, starting up instantaneously. It also provides a ClojureScript build API that can compile ClojureScript projects without the JVM.

## Use cases
- run a fast ClojureScript REPL without the JVM
- compile ClojureScript projects without Java
- experiment with ClojureScript from the terminal
- script and automate tasks in ClojureScript on Node.js
- access the Node.js ecosystem from ClojureScript

## When to choose
- you want instant-startup ClojureScript REPLs without JVM overhead
- you need a standalone, cross-platform ClojureScript binary
- you want to compile ClojureScript using only JavaScript tooling

## When to avoid
- you need the latest ClojureScript compiler features or active maintenance
- your build depends on JVM-based ClojureScript tooling
- you need long-term support - the latest release dates to 2022

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: interpreter, cli, compiler, developer-tools
- domain: programming-languages, developer-tools, compilers
- platform: cross-platform, windows, cli
- tags: clojurescript, repl, self-hosted, v8, jvm-free, command-line, nodejs, macos, linux, docker

## Member repositories
- anmonteiro/lumo (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:47.156404+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 2026-08-30T03:14:49.197880+00:00, confidence not recorded.
  - readme: https://github.com/anmonteiro/lumo (fetched 2026-08-28T04:05:47.156404+00:00, sha 404f47820c92)
- Data as of 2026-08-30T08:39:29.467469+00:00.