crocks/predicates/isAlternative.js

A collection of well known Algebraic Datatypes for your utter enjoyment.

/** @license ISC License (c) copyright 2016 original and current authors */
/** @author Ian Hofmann-Hicks (evil) */

var isApplicative = require('../core/isApplicative')
var isPlus = require('../core/isPlus')

// isAlternative : a -> Boolean
function isAlternative(m) {
  return isPlus(m)
    && isApplicative(m)
}

module.exports = isAlternative