Bundle cjs and es formats (reduxjs#2358)

* Bundle cjs and es formats

* Test generated bundle

* Missed a yarn command in the merge process

* Updates to the rollup config.

Author: TrySound

package.json

@@ -2,8 +2,8 @@
   "name": "redux",
   "version": "3.7.2",
   "description": "Predictable state container for JavaScript apps",
-  "main": "lib/index.js",
-  "module": "es/index.js",
+  "main": "lib/redux.js",
+  "module": "es/redux.js",
   "typings": "./index.d.ts",
   "files": [
     "dist",
@@ -15,13 +15,14 @@
   "scripts": {
     "clean": "rimraf lib dist es coverage",
     "lint": "eslint src test build",
+    "pretest": "npm run build:commonjs",
     "test": "cross-env BABEL_ENV=commonjs jest",
     "test:watch": "npm test -- --watch",
     "test:cov": "npm test -- --coverage",
-    "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=es NODE_ENV=development rollup -c -i src/index.js -o dist/redux.js",
-    "build:umd:min": "cross-env BABEL_ENV=es NODE_ENV=production rollup -c -i src/index.js -o dist/redux.min.js",
+    "build:commonjs": "cross-env NODE_ENV=cjs rollup -c -o lib/redux.js",
+    "build:es": "cross-env BABEL_ENV=es NODE_ENV=es rollup -c -o es/redux.js",
+    "build:umd": "cross-env BABEL_ENV=es NODE_ENV=development rollup -c -o dist/redux.js",
+    "build:umd:min": "cross-env BABEL_ENV=es NODE_ENV=production rollup -c -o dist/redux.min.js",
     "build": "npm run build:commonjs && npm run build:es && npm run build:umd && npm run build:umd:min",
     "prepare": "npm run clean && npm run lint && npm test && npm run build",
     "examples:lint": "eslint examples",

rollup.config.js

@@ -3,13 +3,28 @@ import babel from 'rollup-plugin-babel'
 import replace from 'rollup-plugin-replace'
 import uglify from 'rollup-plugin-uglify'
 
-var env = process.env.NODE_ENV
-var config = {
-  output: {
-    format: 'umd',
-    name: 'Redux'
-  },
-  plugins: [
+const env = process.env.NODE_ENV
+const config = {
+  input: 'src/index.js',
+  plugins: []
+}
+
+if (env === 'es' || env === 'cjs') {
+  config.output = { format: env }
+  config.external = [
+    'lodash/isPlainObject',
+    'lodash-es/isPlainObject',
+    'symbol-observable'
+  ];
+  config.plugins.push(
+    babel()
+  )
+}
+
+if (env === 'development' || env === 'production') {
+  config.output = { format: 'umd' }
+  config.name = 'Redux'
+  config.plugins.push(
     nodeResolve({
       jsnext: true
     }),
@@ -19,7 +34,7 @@ var config = {
     replace({
       'process.env.NODE_ENV': JSON.stringify(env)
     })
-  ]
+  )
 }
 
 if (env === 'production') {

test/applyMiddleware.spec.js

@@ -1,4 +1,4 @@
-import { createStore, applyMiddleware } from '../src/index'
+import { createStore, applyMiddleware } from '../'
 import * as reducers from './helpers/reducers'
 import { addTodo, addTodoAsync, addTodoIfEmpty } from './helpers/actionCreators'
 import { thunk } from './helpers/middleware'

test/bindActionCreators.spec.js

@@ -1,4 +1,4 @@
-import { bindActionCreators, createStore } from '../src'
+import { bindActionCreators, createStore } from '../'
 import { todos } from './helpers/reducers'
 import * as actionCreators from './helpers/actionCreators'
 

test/combineReducers.spec.js

@@ -1,6 +1,5 @@
 /* eslint-disable no-console */
-import { combineReducers } from '../src'
-import createStore from '../src/createStore'
+import { createStore, combineReducers } from '../'
 import ActionTypes from '../src/utils/actionTypes'
 
 describe('Utils', () => {

test/compose.spec.js

@@ -1,4 +1,4 @@
-import { compose } from '../src'
+import { compose } from '../'
 
 describe('Utils', () => {
   describe('compose', () => {

test/createStore.spec.js

@@ -1,12 +1,12 @@
-import { createStore, combineReducers } from '../src/index'
-import { 
-  addTodo, 
-  dispatchInMiddle, 
+import { createStore, combineReducers } from '../'
+import {
+  addTodo,
+  dispatchInMiddle,
   getStateInMiddle,
   subscribeInMiddle,
   unsubscribeInMiddle,
-  throwError, 
-  unknownAction 
+  throwError,
+  unknownAction
 } from './helpers/actionCreators'
 import * as reducers from './helpers/reducers'
 import * as Rx from 'rxjs'