Configuring the output configuration options tells webpack how to write the compiled files to disk. Note that, while there can be multiple entry points, only one output configuration is specified.

Usage

The minimum requirement for the output property in your webpack configuration is to set its value to an object and provide an output.filename to use for the output file(s):

webpack.config.js

module.exports = {
  output: {
    filename: 'bundle.js',
  }
};

This configuration would output a single bundle.js file into the dist directory.

Multiple Entry Points

If your configuration creates more than a single "chunk" (as with multiple entry points or when using plugins like CommonsChunkPlugin), you should use substitutions to ensure that each file has a unique name.

module.exports = {
  entry: {
    app: './src/app.js',
    search: './src/search.js'
  },
  output: {
    filename: '[name].js',
    path: __dirname + '/dist'
  }
};

// writes to disk: ./dist/app.js, ./dist/search.js

Advanced

Here's a more complicated example of using a CDN and hashes for assets:

config.js

module.exports = {
  //...
  output: {
    path: '/home/proj/cdn/assets/[hash]',
    publicPath: 'https://cdn.example.com/assets/[hash]/'
  }
};

In cases where the eventual publicPath of output files isn't known at compile time, it can be left blank and set dynamically at runtime via the __webpack_public_path__ variable in the entry point file:

__webpack_public_path__ = myRuntimePublicPath;

// rest of your application entry