# ramda/ramda-fantasy

:ram::sparkles: Fantasy-Land compatible types for easy integration with Ramda.js

Repository: https://github.com/ramda/ramda-fantasy
Canonical: https://ross.abutalabs.com/products/ramda-fantasy
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2022-01-31T13:41:16+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": 4292, "days_push": 1675, "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 1499, forks 91 (observed 2026-08-28T04:04:54.113840+00:00)

## What it is
A JavaScript library providing Fantasy-Land compatible algebraic data types (Either, Maybe, Future, IO, Reader, State, Tuple, Identity) designed for easy integration with Ramda. The project is no longer developed and its maintainers recommend alternatives like Sanctuary, Folktale, and Fluture.

## Use cases
- use Maybe and Either types for null-safe error handling in JavaScript
- integrate functional monads with Ramda pipelines
- implement functional error handling without exceptions
- model side effects with IO and Future types
- learn functional programming patterns like monads and functors in JS

## When to choose
- you are already committed to a legacy codebase that depends on ramda-fantasy
- you need a minimal, well-known set of Fantasy-Land types for a small project

## When to avoid
- starting a new project - use Sanctuary, Folktale, or Fluture instead
- you need actively maintained types with ongoing bug fixes and security patches
- you need types beyond the fixed set provided (e.g., Task, Validation)

## Facets
- artifact type: library
- maturity: abandoned
- function: serialization, developer-tools
- domain: developer-tools, programming-languages
- platform: -
- tags: fantasy-land, algebraic-data-types, functional-programming, monads, ramda, deprecated, nodejs, javascript

## Member repositories
- ramda/ramda-fantasy (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:54.113840+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 2026-08-30T04:33:03.522221+00:00, confidence not recorded.
  - readme: https://github.com/ramda/ramda-fantasy (fetched 2026-08-28T04:04:54.113840+00:00, sha 861b33ed999e)
  - registry_npm: https://registry.npmjs.org/ramda-fantasy (fetched 2026-08-29T11:38:21.011186+00:00, sha 9c9458c56465)
- Data as of 2026-08-30T08:39:29.467469+00:00.