Having some trouble setting up my webpack config - node.js

Question

I am following a few tutorials, but mainly the one by Dan Abramov on setting up react hot loader but I am having some issues. I think I have a basic configuration working, however hot reloading of component does not seem to work, so obviously the hot loader set up is wrong :(
When I change a component, my browser console logs this:
The following modules couldn't be hot updated: (Full reload needed)
This is usually because the modules which have changed (and their parents) do not know how to hot reload themselves. See http://webpack.github.io/docs/hot-module-replacement-with-webpack.html for more details.
- ./app/components/Home/index.jsx
To start off, here is my file structure:
.
|++[app]
|----[actions]
|----[modules]
|----[reducers]
|----[store]
|----index.html
|----index.js
|--[config]
|----server.js
|----webpack.config.js
|--[node_modules]
|--package.json
Here's my webpack config:
var webpack = require('webpack');
var path = require('path');
var autoprefixer = require('autoprefixer');
var isProd = process.env.NODE_ENV === 'production';
module.exports = {
devtool: isProd ? null : 'source-map',
entry: [
'webpack-hot-middleware/client',
path.resolve('app/index.js')
],
output: {
path: path.resolve('dist'),
filename: 'bundle.js',
publicPath: '/static/'
},
resolve: {
root: path.resolve( 'app/'),
extensions: ['', '.js', '.jsx']
},
module: {
loaders: [
{
test: /\.jsx?$/,
loaders: [
'babel'
],
include: path.resolve('.'),
exclude: /node_modules/
},
{
test: /\.(png|jpg)$/,
loader: 'file-loader?name=img/[name].[ext]'
},
{
test: /\.scss$/,
loader: 'style!css?modules&importLoaders=1&localIdentName=[path]___[name]__[local]___[hash:base64:5]!postcss!sass'
}
]
},
plugins: [
new webpack.optimize.OccurenceOrderPlugin(),
new webpack.HotModuleReplacementPlugin()
],
postcss: [
autoprefixer({ browsers: ['last 3 versions'] })
]
};
And my server.js
var webpack = require('webpack');
var webpackDevMiddleware = require('webpack-dev-middleware');
var webpackHotMiddleware = require('webpack-hot-middleware');
var config = require('./webpack.config');
var path = require('path');
var app = new (require('express'))();
var port = 3000;
var compiler = webpack(config);
app.use(webpackDevMiddleware(compiler, { noInfo: true, publicPath: config.output.publicPath }));
app.use(webpackHotMiddleware(compiler));
app.get('/*', function(req, res) {
res.sendFile(path.resolve('app/index.html'));
});
app.listen(port, function(error) {
if (error) {
console.error(error);
} else {
console.info('started on localhost://%s.', port);
}
});

Answer 1

The react-hot loader is missing within your module.loaders array. More into this.
Next we need to tell Webpack to use React Hot Loader for the components. If you configured Webpack for React, you may already use babel-loader (ex 6to5-loader) or jsx-loader for JS(X) files. Find that line in webpack.config.js and put react-hot before other loader(s).
So you need to add the react-hot loader before your babel loader, like so:
{
test: /\.jsx?$/,
loader: 'react-hot',
exclude: /node_modules/
}
And also you need to install the react-hot-loader module if you haven't already.
npm i -D react-hot-loader