webpack / hot-node-example

Example for HMR in a node.js process

hot-node-example

Example for very simple Hot Module Replacement with webpack.

Running the app with HMR

npm install
npm run hot

# in a new terminal
npm start

Running the app without HMR

npm run build
npm start

Real app

In a real application you should do this things too:

• Put any normal node.js module in externals config
  • For performance
  • Not all node.js modules can be bundled
  • Specify output.libraryTarget: "commonjs2" to default to import by require.
• Use webpack/hot/signal instead of polling
  • Send a signal to the process to trigger the HMR
• Enable SourceMaps and source-map-support for node.js
• Handle the case when a hot update fails, i. e. because of errors or not accepted modules