[![npm][npm]][npm-url]
[![deps][deps]][deps-url]
[![tests][tests]][tests-url]
[![coverage][cover]][cover-url]

Webpack LRU middleware

Stop building entrypoints you don't need!

The problem

Webpack configurations with a lot of entrypoints will often build a lot of
unnecessary modules, taking up valuable build time.

This solution

This module is a wrapper around
[webpack-dev-middleware][webpackdevmiddleware], replacing the webpack entry with
a cache and mounting entrypoints as they are requested.

* Specify a set of entrypoints on startup
* Build more entrypoints based on trigger requests
* Limit number of active entrypoints to build
* Remove entrypoints when they have not been used for a while

Table of contents

- Install
- Usage
- LICENSE

Install

``
npm install webpack-lru-middleware --save-dev
`

Usage

` javascript
const webpack = require('webpack');
const webpackDevMiddleware = require('webpack-dev-middleware');
const webpackLRU = require('webpack-lru-middleware');

const lru = webpackLRU({
// Load this file to make webpack happy
defaultEntry: { __empty__: path.resolve(__dirname, './empty.js') },
// Preload these entries on startup
initialEntry: [],
// configure how requests get mapped to entrypoint names:
mapToEntry: req => path.basename(req.path, '.js'),
// lifecycle hooks for logging / debugging purposes:
onAdd: entryName => {},
onRemove: entryName => {},
// LRU Options to configure caching behavior
// passed straight to https://github.com/chriso/lru
lru: {
max: undefined,
maxAge: undefined
}
});
// Pass a modified webpack config with LRU entries to webpack:
const compiler = webpack(lru.configure(webpackConfig));
const middleware = webpackDevMiddleware(compiler);

// Wrap and mount the middlewares:
app.use(lru.createMiddleware(devMiddleware));
``

LICENSE

#### MIT

[npm]: https://img.shields.io/npm/v/webpack-lru-middleware.svg
[npm-url]: https://npmjs.com/package/webpack-lru-middleware

[deps]: https://david-dm.org/wejendorp/webpack-lru-middleware.svg
[deps-url]: https://david-dm.org/wejendorp/webpack-lru-middleware

[tests]: http://img.shields.io/travis/wejendorp/webpack-lru-middleware.svg
[tests-url]: https://travis-ci.org/wejendorp/webpack-lru-middleware

[cover]: https://codecov.io/gh/wejendorp/webpack-lru-middleware/branch/master/graph/badge.svg
[cover-url]: https://codecov.io/gh/wejendorp/webpack-lru-middleware

[webpackdevmiddleware]: https://github.com/webpack/webpack-dev-middleware