react-modules

react-modules
---

[work in progress]

npm install react-modules babel-template --save

code splitting as a component

``jsx
import { Modules } from 'react-modules'

load={require('./App.js')}>{
// or arrays, or objects, whatevs
App => App ?


:
loading...
}
`

- isomorphic / SSR friendly
- transpiles to webpack-friendly split points with a plugin(react-modules/babel)
- with helpers to preserve server-rendered html until module loads
- leverage the structure of your app to efficiently split/load your javascript bundles


api
---


`jsx
{
([A, B { c:C }]) => {...}
}
`

- load={reqs} - return the required modules with require. with the plugin, this will be converted to webpack code split points.
- onError={fn} - catch errors
- include={bool} - bypasses the code split
- defer={bool} - loads the scripts only in the trasnpiled version
- chunkName={str} - optional, acts as third argument to the backing require.ensure() call for named chunks
- entry={name} - (experimental) include chunk into name entry. works in tandem with extractEntries() (TODO - accept multiple entries)




html persistence helpers

a set of helpers to preserve server/static-rendered html, until its 'parent' module loads.
this is useful when the component is heavy, but you still want to show prerendered html while the chunk loads

- preserve(id, DOMelement) : DOMelement
- preserved(id) : DOMelement

example -
`jsx
{
A => A ? preserve('myhtml',

): // on SSR, this will generate html
preserved('myhtml') || // on browser, use the cached html, until the module loads up
loading... // if neither available, show loading state
}
`

Use sparingly! This will probably break react's checksum algo, but that's the tradeoff you'll need for this behavior.

plugin

- react-modules/babel - wraps Modules components' load props with require.ensure boilerplate, generating code splits

extractEntries

- extractEntries(filepath) (experimental) - statically analyze module and generate webpack entries

extractResourceMap


- extractResourceMap(filepath) (experimental) - statically analyze an app and generate urlpattern -> entries map. works in tandem with react-router@4.

todo
---

- docs
- tests
- custom component that accepts entry/load
- express` helper/middleware to serve bundles
- hmr compat
- arbit file types / webpack loader compat
- browserify compat
- react-native