# kriskowal/gtor

A General Theory of Reactivity

Repository: https://github.com/kriskowal/gtor
Canonical: https://ross.abutalabs.com/products/gtor
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2017-12-04T19:07:25+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": 4407, "days_push": 3194, "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 3067, forks 115 (observed 2026-08-28T04:07:41.418730+00:00)

## What it is
An essay and presentation by Kris Kowal that builds a unified conceptual taxonomy of reactivity, covering values, promises, streams, and observables in JavaScript. It is educational material rather than a runnable library, last updated around 2017.

## Use cases
- understand the difference between promises and observables
- learn reactive programming concepts from first principles
- compare streams, promises, and observables in JavaScript
- prepare for a talk or article on functional reactive programming
- find a unifying theory of async primitives in JS

## When to choose
- you want a conceptual foundation for reactive programming in JavaScript
- you need a clear taxonomy of promises, streams, and observables
- you are teaching or writing about async patterns

## When to avoid
- you need a production reactive library like RxJS or Most.js
- you want actively maintained code or examples
- you need framework-specific reactive state management

## Facets
- artifact type: learning-resource
- maturity: abandoned
- function: developer-tools, documentation
- domain: programming-languages, tutorials, developer-tools
- platform: cross-platform
- tags: reactive-programming, promises, observables, streams, functional-reactive-programming, essay, javascript, nodejs

## Member repositories
- kriskowal/gtor (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:41.418730+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 2026-08-30T07:28:10.878592+00:00, confidence not recorded.
  - readme: https://github.com/kriskowal/gtor (fetched 2026-08-28T04:07:41.418730+00:00, sha 9491e3ea78a0)
- Data as of 2026-08-30T08:39:29.467469+00:00.