# arkency/reactjs_koans

Learn basics of React.js making the tests pass

Repository: https://github.com/arkency/reactjs_koans
Canonical: https://ross.abutalabs.com/products/reactjs_koans
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2024-07-08T07:42:24+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4142, "days_push": 786, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3214, forks 453 (observed 2026-08-28T04:07:49.550484+00:00)

## What it is
A set of test-driven exercises (koans) for learning React.js from scratch, where learners make failing tests pass by editing exercise files. It uses JavaScript/ES2015 and includes a browser-based live view.

## Use cases
- learn react from scratch
- practice react with exercises
- learn react by making tests pass
- react koans tutorial
- hands-on react learning for javascript developers

## When to choose
- you already know JavaScript and want to learn React basics
- you prefer test-driven, exercise-based learning
- you want a free, self-paced React introduction

## When to avoid
- you need up-to-date React features like hooks or modern tooling
- you want a complete reference or production starter
- you don't know JavaScript yet

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: testing, frontend-framework
- domain: frontend, education, web-development
- platform: browser
- tags: react, koans, tdd, exercises, learning-by-doing, nodejs, javascript

## Member repositories
- arkency/reactjs_koans (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:49.550484+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 2026-08-29T18:44:56.913655+00:00, confidence not recorded.
  - readme: https://github.com/arkency/reactjs_koans (fetched 2026-08-28T04:07:49.550484+00:00, sha 966463354a09)
  - registry_npm: https://registry.npmjs.org/reactjs_koans (fetched 2026-08-29T09:38:19.383978+00:00, sha 8d6af9dc3bf6)
- Data as of 2026-08-30T08:39:29.467469+00:00.