crocks/core/hasAlg.js

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

/** @license ISC License (c) copyright 2017 original and current authors */
/** @author Ian Hofmann-Hicks (evil) */

var isFunction = require('./isFunction')
var fl = require('./flNames')

var check = function (alg, m) { return isFunction(m[fl[alg]]) || isFunction(m[alg]); }

var checkImpl = function (alg, m) { return isFunction(m['@@implements']) && !!m['@@implements'](alg); }

var hasAlg = function (alg, m) { return !!m && (check(alg, m) || checkImpl(alg, m)); }

module.exports = hasAlg