# Raynos/mercury

A truly modular frontend framework

Repository: https://github.com/Raynos/mercury
Canonical: https://ross.abutalabs.com/products/raynos-mercury
Homepage: http://raynos.github.io/mercury/
Language: JavaScript
License: MIT
License Family: permissive
Archived: true
Last push: 2020-06-16T08:21:56+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4537, "days_push": 2269, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2810, forks 139 (observed 2026-08-28T04:07:23.643051+00:00)

## What it is
Mercury is a modular JavaScript frontend framework built on virtual-dom, offering immutable virtual DOM structures and unidirectional state management similar to React. It is explicitly deprecated and no longer actively maintained, with the author recommending tonic instead.

## Use cases
- build a modular frontend app with virtual-dom
- unidirectional data flow state management in JavaScript
- server-side rendering of frontend components
- learn how a React-like framework works internally
- mix a frontend framework with Backbone or Immutable.js

## When to choose
- studying framework design or virtual-dom concepts
- maintaining a legacy codebase already using mercury

## When to avoid
- starting any new frontend project
- needing long-term maintenance or community support
- wanting a modern component model or ecosystem

## Facets
- artifact type: framework
- maturity: abandoned
- function: frontend-framework, state-management, templating, ssr
- domain: web-development, frontend
- platform: browser
- tags: virtual-dom, deprecated, unidirectional-data-flow, modular, nodejs, javascript

## Member repositories
- Raynos/mercury (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:23.643051+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 2026-08-30T08:13:33.109801+00:00, confidence not recorded.
  - readme: https://github.com/Raynos/mercury (fetched 2026-08-28T04:07:23.643051+00:00, sha fde2a0992264)
  - homepage: http://raynos.github.io/mercury/ (fetched 2026-08-29T09:54:20.721812+00:00, sha 2faead35d6c5)
  - registry_npm: https://registry.npmjs.org/mercury (fetched 2026-08-29T09:54:20.730645+00:00, sha 9fb3f131f775)
- Data as of 2026-08-30T08:39:29.467469+00:00.