webpack.config.js

const fs = require('fs')
const path = require('path')
const webpack = require('webpack')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const clc = require('cli-color')

let env = getEnv()
let copyright = getCopyright()
let config = loadConfig(env)

let plugins = [
  new webpack.ProvidePlugin({
    $: 'jquery',
    jQuery: 'jquery'
  }),
  new webpack.DefinePlugin({
    APP_ENV: JSON.stringify(env),
    APP_CONFIG: JSON.stringify(config),
    'process.env': {
      'NODE_ENV': JSON.stringify(env)
    }
  }),
  new ExtractTextPlugin({
    filename: 'theme.css'
  })
]

if (env !== 'dev') {
  plugins = plugins.concat([
    new webpack.BannerPlugin(copyright)
  ])
}

module.exports = {
  entry: {
    app: require.resolve(path.join(__dirname, 'src', 'js', 'app.js'))
  },
  output: {
    path: path.resolve(__dirname, 'public/app'),
    filename: '[name].bundle.js'
  },
  resolve: {
    modules: [
      'node_modules',
      path.resolve(__dirname, 'src')
    ],
    alias: {
      jquery$: require.resolve('jquery/src/jquery')
    },
    extensions: ['.js', '.css', '.less']
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /(node_modules)/,
        loader: 'babel-loader'
      },
      {
        test: /\.less$/,
        use: ExtractTextPlugin.extract([
          { loader: 'css-loader' },
          { loader: 'less-loader' }
        ])
      },
      {
        test: /\.(png|jpg|gif|svg|eot|ttf|woff|woff2)$/,
        loader: 'url-loader',
        options: {
          limit: 10000
        }
      }
    ]
  },
  devtool: env === 'dev' ? 'eval' : false,
  plugins: plugins
}

function getEnv () {
  return process.env.NODE_ENV || 'dev'
}

function getCopyright () {
  let licensePath = path.resolve(__dirname, 'COPYRIGHT')
  try {
    return fs.readFileSync(licensePath).toString()
  } catch (e) {
    console.error(clc.red(`no copyright file found at ${licensePath}`))
    process.exit(1)
  }
}

function getConfigurationPathForEnvironment (env) {
  return path.resolve(__dirname, 'config', `config.${env}.js`)
}

function loadConfig (env) {
  let envConfiguration = getConfigurationPathForEnvironment(env)
  try {
    return require(envConfiguration)
  } catch (e) {
    let defaultConfiguration = getConfigurationPathForEnvironment('production')
    console.log(clc.yellow(`No config found for environment ${env}. Loading default configuration at ${defaultConfiguration}`))
    return require(defaultConfiguration)
  }
}