export compose, change export api

Author: David Chase

README.md

@@ -16,12 +16,25 @@ Given two paths create a new union path.
 
 
 ```js
-const union = require('path-union')
+import {union} from 'path-union'
 
 const src = '/Users/davidchase/Desktop/github/path-union/fixtures/packages'
 const dest = '/Users/davidchase/Desktop/github/path-union/dist'
 
-union(dest, src) // => /Users/davidchase/Desktop/github/path-union/dist/fixtures/packages
+union(dest, src) // => '/Users/davidchase/Desktop/github/path-union/dist/fixtures/packages'
+```
+
+also as a bonus you can do functional composition right to left 🔥
+
+```js
+import {union, compose} from 'path-union'
+import {dirname} from 'path'
+
+const src = '/Users/davidchase/Desktop/github/path-union/fixtures/packages'
+const dest = '/Users/davidchase/Desktop/github/path-union/dist'
+
+
+compose(dirname, union)(dest, src) // => '/Users/davidchase/Desktop/github/path-union/dist/fixtures'
 ```
 
 ## API

dist/path-union.js

@@ -1,5 +1,7 @@
 'use strict';
 
+Object.defineProperty(exports, '__esModule', { value: true });
+
 var _compose = function (f, g) { return function () {
 	var args = [], len = arguments.length;
 	while ( len-- ) args[ len ] = arguments[ len ];
@@ -11,9 +13,14 @@ var uniq = function (xs) { return xs.reduce(function (list, x) { return list.ind
 
 var concat = function (xs, list) { return xs.concat(list); }
 
-var compose = function (fns) { return fns.reduce(_compose); }
+var compose = function () {
+	var fns = [], len = arguments.length;
+	while ( len-- ) fns[ len ] = arguments[ len ];
+
+	return fns.reduce(_compose);
+}
 
-var union = compose([uniq, concat])
+var union = compose(uniq, concat)
 
 var join = function (separator) { return function (xs) { return xs.join(separator); }; }
 
@@ -27,6 +34,7 @@ var filter = function (pred) { return function (xs) { return xs.filter(pred); };
 
 var prepend = function (a) { return function (b) { return a.concat(b); }; }
 
-var index = compose([prepend('/'), join('/'), filter(Boolean), union, chain(split('/')), of])
+var pathUnion = compose(prepend('/'), join('/'), filter(Boolean), union, chain(split('/')), of)
 
-module.exports = index;
+exports.compose = compose;
+exports.union = pathUnion;

dist/path-union.min.js

@@ -1,3 +1,5 @@
 import {compose, prepend, join, filter, union, chain, split, of} from './prelude'
 
-export default compose([prepend('/'), join('/'), filter(Boolean), union, chain(split('/')), of])
+const pathUnion = compose(prepend('/'), join('/'), filter(Boolean), union, chain(split('/')), of)
+
+export {compose, pathUnion as union}

index.js

@@ -6,9 +6,9 @@ const uniq = xs => xs.reduce((list, x) => list.indexOf(x) === -1 ? list.concat(x
 
 const concat = (xs, list) => xs.concat(list)
 
-export const compose = fns => fns.reduce(_compose)
+export const compose = (...fns) => fns.reduce(_compose)
 
-export const union = compose([uniq, concat])
+export const union = compose(uniq, concat)
 
 export const join = separator => xs => xs.join(separator)
 

prelude.js

@@ -2,9 +2,9 @@
 
 import test from 'tape'
 import path from 'path'
-import union from './index'
+import {union, compose} from './index'
 
-test('it works', function(t){
+test('union', function(t){
   const expected = path.join(__dirname, 'output/src/images')
   const expected2 = path.join(__dirname, 'output/images/src/stuff')
 
@@ -13,3 +13,8 @@ test('it works', function(t){
   t.end()
 })
 
+test('compose', function(t){
+  t.equals(compose(x => x, a => a + 1, y => y + 10)(10), 21)
+  t.end()
+})
+