# ng-book/angular2-rxjs-chat

Example Chat Application using RxJS and Angular 2

Repository: https://github.com/ng-book/angular2-rxjs-chat
Canonical: https://ross.abutalabs.com/products/angular2-rxjs-chat
Language: CSS
License Family: other
Last push: 2020-12-05T13:57:13+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4011, "days_push": 2097, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1655, forks 509 (observed 2026-08-28T04:05:17.841190+00:00)

## What it is
An example chat application built with Angular 2 and RxJS, created by the ng-book team to demonstrate the Observables data architecture pattern. It showcases injectable services that publish data as RxJS streams consumed by async components.

## Use cases
- learn how to use RxJS observables in Angular
- see an example chat app built with Angular 2
- understand how to write injectable services in Angular
- study reactive data architecture patterns in frontend apps
- find a starter example for Angular CLI with Webpack and Karma
- learn how async components subscribe to RxJS streams

## When to choose
- you are learning Angular 2 and RxJS from the ng-book tutorial
- you want a reference implementation of an observable-based service architecture
- you need a small sample app to study Angular CLI, Webpack, and Karma setup

## When to avoid
- you need a production-ready chat application
- you are working with modern Angular versions, since this targets Angular 2 and is unmaintained
- you need a project with an active license or ongoing support

## Facets
- artifact type: learning-resource
- maturity: abandoned
- function: chatbot, state-management, developer-tools
- domain: web-development, frontend, tutorials, education
- platform: cross-platform
- tags: angular, rxjs, observables, typescript, example-app, chat-app, sample-code, web-server, nodejs

## Member repositories
- ng-book/angular2-rxjs-chat (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:17.841190+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 2026-08-30T03:44:53.232642+00:00, confidence not recorded.
  - readme: https://github.com/ng-book/angular2-rxjs-chat (fetched 2026-08-28T04:05:17.841190+00:00, sha d463ec757b35)
- Data as of 2026-08-30T08:39:29.467469+00:00.