# JensRavens/Interstellar

Simple and lightweight Functional Reactive Coding in Swift for the rest of us

Repository: https://github.com/JensRavens/Interstellar
Canonical: https://ross.abutalabs.com/products/jensravens-interstellar
Language: Swift
License: MIT
License Family: permissive
Archived: true
Last push: 2019-04-23T15:48:10+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": 4126, "days_push": 2689, "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 1078, forks 253 (observed 2026-08-28T04:03:29.746075+00:00)

## What it is
Interstellar is a lightweight Swift library providing a simple Observable<T> implementation for functional reactive programming. It supports map/transform pipelines, error handling, and multithreading with GCD via its WarpDrive companion, running on iOS, macOS, and Linux.

## Use cases
- reactive programming in swift without heavy frameworks
- simple observable signal implementation
- chain async function calls with error handling in swift
- lightweight alternative to rxswift
- multithreading with gcd made simple in swift
- cross-platform reactive code for ios and linux

## When to choose
- you want a minimal, easy-to-understand reactive primitive instead of a full Rx framework
- you need Observable/subscribe semantics with map and error pipelines in Swift
- you target iOS, macOS, or Linux with Swift and want a tiny dependency

## When to avoid
- you need a full-featured reactive framework with schedulers, backpressure, and rich operators
- you need actively maintained Swift 5.1+/Combine-era support, as the last release was 2019
- your project already uses Combine or RxSwift

## Facets
- artifact type: library
- maturity: maintenance
- function: concurrency, developer-tools
- domain: developer-tools, cross-platform, programming-languages
- platform: -
- tags: reactive-programming, observable, frp, swift-library, gcd, swift, ios, macos, linux

## Member repositories
- JensRavens/Interstellar (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:29.746075+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 2026-08-30T06:53:07.590851+00:00, confidence not recorded.
  - readme: https://github.com/JensRavens/Interstellar (fetched 2026-08-28T04:03:29.746075+00:00, sha 1b23c31561e0)
- Data as of 2026-08-30T08:39:29.467469+00:00.