Redux Integration (#4668)

* Reduxtion! 💥

* Lerna needs to be in independent mode now

react-router-redux is already 4.0, so it will have to be 5.0.0 for now.
Hopefully, we can sync it up soon and Lerna doesn't become too much of a
pain to use now.

* Whoops, that shouldn't have been commented out...

* Add reducer tests

* Add back the history convenience actions

* Add a read me for reading

* Don't need dev-expression since we're not using dev expressions

* Add the nav dispatch middleware to the example

lerna.json

@@ -1,6 +1,6 @@
 {
   "lerna": "2.0.0-beta.32",
-  "version": "4.0.0-beta.8",
+  "version": "independent",
   "packages": [
     "packages/*"
   ]

packages/react-router-redux/.babelrc

@@ -0,0 +1,14 @@
+{
+  "presets": [
+    "./tools/es2015-preset",
+    "stage-1",
+    "react"
+  ],
+  "env": {
+    "production": {
+      "plugins": [
+        "transform-react-remove-prop-types"
+      ]
+    }
+  }
+}

packages/react-router-redux/.eslintrc

@@ -0,0 +1,22 @@
+{
+  "parser": "babel-eslint",
+  "env": {
+    "node": true,
+    "es6": true,
+    "jest": true
+  },
+  "plugins": [
+    "import",
+    "react"
+  ],
+  "extends": [
+    "eslint:recommended",
+    "plugin:import/errors",
+    "plugin:react/recommended"
+  ],
+  "rules": {
+    "prefer-arrow-callback": 2,
+    "react/display-name": 0,
+    "semi": [ 2, "never" ]
+  }
+}

packages/react-router-redux/.gitignore

@@ -0,0 +1,5 @@
+es
+node_modules
+umd
+/*.js
+!rollup.config.js

packages/react-router-redux/README.md

@@ -0,0 +1,64 @@
+# react-router-redux
+
+[![npm version](https://img.shields.io/npm/v/react-router-redux.svg?style=flat-square)](https://www.npmjs.com/package/react-router-redux) [![npm downloads](https://img.shields.io/npm/dm/react-router-redux.svg?style=flat-square)](https://www.npmjs.com/package/react-router-redux) [![build status](https://img.shields.io/travis/reactjs/react-router-redux/master.svg?style=flat-square)](https://travis-ci.org/reactjs/react-router-redux)
+
+> **Keep your state in sync with your router** :sparkles:
+
+
+## Installation
+
+```
+npm install --save react-router-redux
+```
+
+## Usage
+
+Here's a basic idea of how it works:
+
+```js
+import React from 'react'
+import ReactDOM from 'react-dom'
+
+import { createStore, combineReducers, applyMiddleware } from 'redux'
+import { Provider } from 'react-redux'
+
+import createHistory from 'history/createBrowserHistory'
+import { Route } from 'react-router'
+
+import { ConnectedRouter, routerReducer, routerMiddleware, push } from 'react-router-redux'
+
+import reducers from './reducers' // Or wherever you keep your reducers
+
+// Create a history of your choosing (we're using a browser history in this case)
+const history = createHistory()
+
+// Build the middleware for intercepting and dispatching navigation actions
+const middleware = routerMiddleware(history)
+
+// Add the reducer to your store on the `router` key
+// Also apply our middleware for navigating
+const store = createStore(
+  combineReducers({
+    ...reducers,
+    router: routerReducer
+  }),
+  applyMiddleware(middleware)
+)
+
+// Now you can dispatch navigation actions from anywhere!
+// store.dispatch(push('/foo'))
+
+ReactDOM.render(
+  <Provider store={store}>
+    { /* ConnectedRouter will use the store from Provider automatically */ }
+    <ConnectedRouter history={history}>
+      <div>
+        <Route exact path="/" component={Home}/>
+        <Route path="/about" component={About}/>
+        <Route path="/topics" component={Topics}/>
+      </div>
+    </ConnectedRouter>
+  </Provider>,
+  document.getElementById('root')
+)
+```

packages/react-router-redux/modules/ConnectedRouter.js

@@ -0,0 +1,36 @@
+import React, { Component, PropTypes } from 'react'
+import { Router, Route } from 'react-router'
+
+import { LOCATION_CHANGE } from './reducer'
+
+class ConnectedRouter extends Component {
+  static propTypes = {
+    store: PropTypes.object,
+    history: PropTypes.object,
+    children: PropTypes.node
+  }
+
+  static contextTypes = {
+    store: PropTypes.object
+  }
+
+  render() {
+    const { store:propsStore, history, children, ...props } = this.props
+    let store = propsStore || this.context.store
+
+    return (
+      <Router {...props} history={history}>
+        <Route render={({ location }) => {
+            store.dispatch({
+              type: LOCATION_CHANGE,
+              payload: location
+            })
+
+            return children
+          }}/>
+      </Router>
+    )
+  }
+}
+
+export default ConnectedRouter

packages/react-router-redux/modules/__tests__/ConnectedRouter-test.js

@@ -0,0 +1,60 @@
+import React from 'react'
+import renderer from 'react-test-renderer'
+import { createStore, combineReducers } from 'redux'
+import { Provider } from 'react-redux'
+import createHistory from 'history/createMemoryHistory'
+
+import ConnectedRouter from '../ConnectedRouter'
+import { routerReducer } from '../reducer'
+
+describe('A <ConnectedRouter>', () => {
+  let store, history
+
+  beforeEach(() => {
+    store = createStore(combineReducers({
+      router: routerReducer
+    }))
+
+    history = createHistory()
+  })
+
+  it('connects to a store via Provider', () => {
+    expect(store.getState()).toHaveProperty('router.location', null)
+
+    renderer.create(
+      <Provider store={store}>
+        <ConnectedRouter history={history}>
+          <div>Test</div>
+        </ConnectedRouter>
+      </Provider>
+    )
+
+    expect(store.getState()).toHaveProperty('router.location.pathname')
+  })
+
+  it('connects to a store via props', () => {
+    expect(store.getState()).toHaveProperty('router.location', null)
+
+    renderer.create(
+      <ConnectedRouter store={store} history={history}>
+        <div>Test</div>
+      </ConnectedRouter>
+    )
+
+    expect(store.getState()).toHaveProperty('router.location.pathname')
+  })
+
+  it('updates the store with location changes', () => {
+    renderer.create(
+      <ConnectedRouter store={store} history={history}>
+        <div>Test</div>
+      </ConnectedRouter>
+    )
+
+    expect(store.getState()).toHaveProperty('router.location.pathname', '/')
+
+    history.push('/foo')
+
+    expect(store.getState()).toHaveProperty('router.location.pathname', '/foo')
+  })
+})

packages/react-router-redux/modules/__tests__/actions-test.js

@@ -0,0 +1,98 @@
+import {
+  CALL_HISTORY_METHOD,
+  push, replace, go, goBack, goForward
+} from '../actions'
+
+describe('routerActions', () => {
+
+  describe('push', () => {
+    it('creates actions', () => {
+      expect(push('/foo')).toEqual({
+        type: CALL_HISTORY_METHOD,
+        payload: {
+          method: 'push',
+          args: [ '/foo' ]
+        }
+      })
+
+      expect(push({ pathname: '/foo', state: { the: 'state' } })).toEqual({
+        type: CALL_HISTORY_METHOD,
+        payload: {
+          method: 'push',
+          args: [ {
+            pathname: '/foo',
+            state: { the: 'state' }
+          } ]
+        }
+      })
+
+      expect(push('/foo', 'baz', 123)).toEqual({
+        type: CALL_HISTORY_METHOD,
+        payload: {
+          method: 'push',
+          args: [ '/foo' , 'baz', 123 ]
+        }
+      })
+    })
+  })
+
+  describe('replace', () => {
+    it('creates actions', () => {
+      expect(replace('/foo')).toEqual({
+        type: CALL_HISTORY_METHOD,
+        payload: {
+          method: 'replace',
+          args: [ '/foo' ]
+        }
+      })
+
+      expect(replace({ pathname: '/foo', state: { the: 'state' } })).toEqual({
+        type: CALL_HISTORY_METHOD,
+        payload: {
+          method: 'replace',
+          args: [ {
+            pathname: '/foo',
+            state: { the: 'state' }
+          } ]
+        }
+      })
+    })
+  })
+
+  describe('go', () => {
+    it('creates actions', () => {
+      expect(go(1)).toEqual({
+        type: CALL_HISTORY_METHOD,
+        payload: {
+          method: 'go',
+          args: [ 1 ]
+        }
+      })
+    })
+  })
+
+  describe('goBack', () => {
+    it('creates actions', () => {
+      expect(goBack()).toEqual({
+        type: CALL_HISTORY_METHOD,
+        payload: {
+          method: 'goBack',
+          args: []
+        }
+      })
+    })
+  })
+
+  describe('goForward', () => {
+    it('creates actions', () => {
+      expect(goForward()).toEqual({
+        type: CALL_HISTORY_METHOD,
+        payload: {
+          method: 'goForward',
+          args: []
+        }
+      })
+    })
+  })
+
+})

packages/react-router-redux/modules/__tests__/middleware-test.js

@@ -0,0 +1,32 @@
+import { push, replace } from '../actions'
+import routerMiddleware from '../middleware'
+
+describe('routerMiddleware', () => {
+  let history, next, dispatch
+
+  beforeEach(() => {
+    history = {
+      push: jest.fn(),
+      replace: jest.fn()
+    }
+    next = jest.fn()
+
+    dispatch = routerMiddleware(history)()(next)
+  })
+
+
+  it('calls the appropriate history method', () => {
+    dispatch(push('/foo'))
+    expect(history.push).toHaveBeenCalled()
+
+    dispatch(replace('/foo'))
+    expect(history.replace).toHaveBeenCalled()
+
+    expect(next).toHaveBeenCalledTimes(0)
+  })
+
+  it('ignores other actions', () => {
+    dispatch({ type: 'FOO' })
+    expect(next).toHaveBeenCalled()
+  })
+})