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react-code-splitting

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Code splitting won't be a nightmare anymore !

// repository documentation

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# react-code-splitting ✂️

`react-code-splitting` is an "old" library, React has implemented a great solution since and it's called [React.lazy](https://reactjs.org/docs/code-splitting.html#reactlazy) go get it !

You're working on a great app powered by React, bundled with webpack and your bundle size increases ... You're in the right place to solve this modern JS apps nightmare.

## Prerequisite

- You're using [Webpack 2+](https://webpack.js.org/)
- You've polyfilled ***Promise*** to support old browser

## How-to

#### Without code splitting

`<Login />` + `<Home />` are loaded at the first start
```jsx
import Login from './Login'
import Home from './Home'

const App = ({ user }) => (
  <Body>
    {user.loggedIn ? <Route path="/" component={Home} /> : <Redirect to="/login" />}
    <Route path="/login" component={Login} />
  </Body>
)
```

#### With code splitting

You're not logged in ? `<Login />` component is the only loaded, `<Home />` will be loaded when the user will be logged in.

Use componentProps to pass props to lazy loaded component.

```jsx
import Async from 'react-code-splitting'

import Login from './Login'
const Home = () => <Async load={import('./Home')} />
const LostPassword = props => <Async load={import('./LostPassword')} componentProps={props}/>

const App = ({ user }) => (
  <Body>
    {user.loggedIn ? <Route path="/" component={Home} /> : <Redirect to="/login" />}
    <Route path="/login" component={Login} />
    <Route path="/lostpassword" component={LostPassword} />
  </Body>
)
```

You can view this snippets in context [here](https://github.com/didierfranc/redux-react-starter/blob/master/src/components/App.js#L12) !

## More

- Why and how it works : [Straightforward code splitting with React and Webpack](https://medium.com/@DidierFranc/straightforward-code-splitting-with-react-and-webpack-4b94c28f6c3f)
- [Webpack examples](https://github.com/webpack/webpack/tree/master/examples)

react-code-splitting

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