Add ES Modules build

.babelrc

@@ -1,5 +1,5 @@
 {
-  plugins: [
+  "plugins": [
     ["transform-es2015-template-literals", { "loose": true }],
     "transform-es2015-literals",
     "transform-es2015-function-name",
@@ -17,7 +17,13 @@
     "transform-es2015-parameters",
     ["transform-es2015-destructuring", { "loose": true }],
     "transform-es2015-block-scoping",
-    ["transform-es2015-modules-commonjs", { "loose": true }],
     "transform-object-rest-spread"
-  ]
+  ],
+  "env": {
+    "commonjs": {
+      "plugins": [
+        ["transform-es2015-modules-commonjs", { "loose": true }]
+      ]
+    }
+  }
 }

.gitignore

@@ -3,5 +3,6 @@
 node_modules
 dist
 lib
+es
 coverage
 _book

.travis.yml

@@ -3,7 +3,7 @@ node_js:
   - "4"
   - "5"
 script:
-  - npm run check:lib
+  - npm run check:src
   - npm run build
   - npm run check:examples
 branches:

package.json

@@ -3,27 +3,29 @@
   "version": "3.2.1",
   "description": "Predictable state container for JavaScript apps",
   "main": "lib/index.js",
-  "jsnext:main": "src/index.js",
+  "jsnext:main": "es/index.js",
   "files": [
     "dist",
     "lib",
+    "es",
     "src"
   ],
   "scripts": {
     "clean": "rimraf lib dist coverage",
     "lint": "eslint src test examples",
-    "test": "mocha --compilers js:babel-register --recursive",
+    "test": "cross-env BABEL_ENV=commonjs mocha --compilers js:babel-register --recursive",
     "test:watch": "npm test -- --watch",
-    "test:cov": "babel-node $(npm bin)/isparta cover $(npm bin)/_mocha -- --recursive",
-    "test:examples": "babel-node examples/testAll.js",
-    "check:lib": "npm run lint && npm run test",
+    "test:cov": "cross-env BABEL_ENV=commonjs babel-node $(npm bin)/isparta cover $(npm bin)/_mocha -- --recursive",
+    "test:examples": "cross-env BABEL_ENV=commonjs babel-node examples/testAll.js",
+    "check:src": "npm run lint && npm run test",
     "check:examples": "npm run build:examples && npm run test:examples",
-    "build:lib": "babel src --out-dir lib",
-    "build:umd": "cross-env NODE_ENV=development webpack src/index.js dist/redux.js",
-    "build:umd:min": "cross-env NODE_ENV=production webpack src/index.js dist/redux.min.js",
-    "build:examples": "babel-node examples/buildAll.js",
-    "build": "npm run build:lib && npm run build:umd && npm run build:umd:min && node ./prepublish",
-    "prepublish": "npm run clean && npm run check:lib && npm run build",
+    "build:commonjs": "cross-env BABEL_ENV=commonjs babel src --out-dir lib",
+    "build:es": "cross-env BABEL_ENV=es babel src --out-dir es",
+    "build:umd": "cross-env BABEL_ENV=commonjs NODE_ENV=development webpack src/index.js dist/redux.js",
+    "build:umd:min": "cross-env BABEL_ENV=commonjs NODE_ENV=production webpack src/index.js dist/redux.min.js",
+    "build:examples": "cross-env BABEL_ENV=commonjs babel-node examples/buildAll.js",
+    "build": "npm run build:commonjs && npm run build:es && npm run build:umd && npm run build:umd:min && node ./prepublish",
+    "prepublish": "npm run clean && npm run check:src && npm run build",
     "docs:clean": "rimraf _book",
     "docs:prepare": "gitbook install",
     "docs:build": "npm run docs:prepare && gitbook build -g rackt/redux",

prepublish.js

@@ -2,7 +2,7 @@ var glob = require('glob')
 var fs = require('fs')
 var es3ify = require('es3ify')
 
-glob('./@(lib|dist)/**/*.js', function (err, files) {
+glob('./@(lib|dist|es)/**/*.js', function (err, files) {
   if (err) {
     throw err
   }