ReferenceError: webpack is not defined

Question

In my webpack app I have a basic build process that's triggered by "npm run build" which executes the webpack binary and copies my index.html in /app to /dist. Whenever I run npm run build I get ReferenceError: webpack is not defined but when I run npm start, which starts the webpack-dev-server, everything's fine.

This is my webpack config file:

var ExtractTextPlugin = require('extract-text-webpack-plugin');  var config = {     context: __dirname + '/app',     entry: './index.js',     output: {         path: __dirname + '/app',         filename: 'app.js'     },     module: {         loaders: [             { test: /\.js$/, loader: 'babel', exclude: /node_modules/ },             { test: /\.html$/, loader: 'raw', exclude: /node_modules/ },             { test: /\.scss$/, loader: ExtractTextPlugin.extract('style', 'css!sass'), exclude: /node_modules/}         ]     },     plugins: [         new ExtractTextPlugin('app.css')     ] };  if (process.env.NODE_ENV == 'production') {     config.output.path = __dirname + '/dist';     config.plugins.push(new webpack.optimize.UglifyJsPlugin()); }  module.exports = config; 

Answer 1

You are missing

var webpack = require('webpack'); 

at the beginning of your file. If you want to optimize execution a bit, you can push it inside that if block of yours.