# tildeio/rsvp.js

A lightweight library that provides tools for organizing asynchronous code

Repository: https://github.com/tildeio/rsvp.js
Canonical: https://ross.abutalabs.com/products/rsvpjs
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2023-10-27T00:21:03+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": 5069, "days_push": 1042, "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 3594, forks 259 (observed 2026-08-28T04:08:11.306970+00:00)

## What it is
RSVP.js is a lightweight JavaScript library implementing Promises/A+ for organizing asynchronous code. It works in both Node.js and browsers and offers extras beyond the ES6 promise subset.

## Use cases
- manage asynchronous code with promises in JavaScript
- use Promises/A+ compliant promises in Node or the browser
- chain async operations with then/catch
- support legacy browsers like IE9 with promises
- get extra promise utilities beyond the ES6 spec

## When to choose
- you need a tiny, battle-tested Promises/A+ implementation
- you must support older browsers without native promises
- you want promise extras beyond the ES6 subset

## When to avoid
- your runtime already has native ES6 promises
- you want a strict ES6-only subset (use es6-promise instead)
- you prefer async/await with native promises

## Facets
- artifact type: library
- maturity: maintenance
- function: concurrency, developer-tools
- domain: web-development, developer-tools
- platform: browser, cross-platform
- tags: promises, promises-a-plus, async, javascript, nodejs

## Member repositories
- tildeio/rsvp.js (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:11.306970+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 2026-08-29T18:33:49.500864+00:00, confidence not recorded.
  - readme: https://github.com/tildeio/rsvp.js (fetched 2026-08-28T04:08:11.306970+00:00, sha 4ee3549585b2)
- Data as of 2026-08-30T08:39:29.467469+00:00.