ramda-adjunct/src/fantasy-land/util.js

Ramda Adjunct is the most popular and most comprehensive set of utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.

import {
  useWith,
  curry,
  curryN,
  equals,
  path,
  either,
  complement,
} from 'ramda';

// type :: Monad a => a -> String
export const type = either(path(['@@type']), path(['constructor', '@@type']));

// typeEquals :: Monad a => String -> a -> Boolean
export const typeEquals = curry(
  (typeIdent, monad) => type(monad) === typeIdent
);

// isSameType :: (Monad a, Monad b) => a -> b -> Boolean
export const isSameType = curryN(2, useWith(equals, [type, type]));

// isNotSameType :: (Monad a, Monad b) => a -> b -> Boolean
export const isNotSameType = complement(isSameType);