# fluture-js/Fluture

🦋 Fantasy Land compliant (monadic) alternative to Promises

Repository: https://github.com/fluture-js/Fluture
Canonical: https://ross.abutalabs.com/products/fluture
Language: JavaScript
License: MIT
License Family: permissive
Topics: fantasy-land, promise, future, monad, async, control-flow, algebraic-data-types, functional-programming, fluture, cancellation, sanctuary
Last push: 2024-04-22T19:36:55+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": 3832, "days_push": 863, "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 2493, forks 82 (observed 2026-08-28T04:06:56.547207+00:00)

## What it is
Fluture is a Fantasy Land compliant, monadic alternative to JavaScript Promises, representing asynchronous operations as lazy, composable Futures. It provides cancellation, resource management, stack-safe composition, and Sanctuary integration.

## Use cases
- replace promises with lazy cancellable async computations
- compose asynchronous operations monadically in JavaScript
- manage async resources with safe acquisition and release
- avoid stack overflows in deep async recursion
- integrate async control flow with Sanctuary and Fantasy Land

## When to choose
- you want lazy, cancellable async control flow instead of eager Promises
- you work in a functional programming style and need monadic composition
- you need stack-safe recursion and resource management for async I/O

## When to avoid
- you just need simple promise-based async and don't want functional programming concepts
- your team is unfamiliar with monads and algebraic data types
- you need a widely maintained library with frequent updates

## Facets
- artifact type: library
- maturity: stable
- function: concurrency, error-handling
- domain: developer-tools, web-development
- platform: browser
- tags: fantasy-land, monad, promise-alternative, async, cancellation, functional-programming, futures, nodejs, deno, javascript

## Member repositories
- fluture-js/Fluture (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:56.547207+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 2026-08-30T02:27:18.893462+00:00, confidence not recorded.
  - readme: https://github.com/fluture-js/Fluture (fetched 2026-08-28T04:06:56.547207+00:00, sha b122ff5e1dd1)
- Data as of 2026-08-30T08:39:29.467469+00:00.