crocks/combinators/composeB.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 compose = require('../core/compose')
var curry = require('../core/curry')
var isFunction = require('../core/isFunction')

// Composition (Bluebird)
// composeB :: (b -> c) -> (a -> b) -> a -> c
function composeB(f, g) {
  if(!(isFunction(f) && isFunction(g))) {
    throw new TypeError(
      'composeB: Functions required for first two arguments'
    )
  }

  return compose(f, g)
}

module.exports = curry(composeB)