old_contents: // Note: You must restart bin/webpack-dev-server for changes to take effect
  
  /* eslint global-require: 0 */
  /* eslint import/no-dynamic-require: 0 */
  
  const webpack = require('webpack')
  const { basename, dirname, join, relative, resolve } = require('path')
  const { sync } = require('glob')
  const ExtractTextPlugin = require('extract-text-webpack-plugin')
  const ManifestPlugin = require('webpack-manifest-plugin')
  const extname = require('path-complete-extname')
  const { env, paths, publicPath, loadersDir } = require('./configuration.js')
  
  const extensionGlob = `**/*{${paths.extensions.join(',')}}*`
  const packPaths = sync(join(paths.source, paths.entry, extensionGlob))
  
  module.exports = {
    entry: packPaths.reduce(
      (map, entry) => {
        const localMap = map
        const namespace = relative(join(paths.source, paths.entry), dirname(entry))
        localMap[join(namespace, basename(entry, extname(entry)))] = resolve(entry)
        return localMap
      }, {}
    ),
  
    output: {
      filename: '[name].js',
      chunkFilename: '[name]-[chunkhash].js',
      path: resolve(paths.output, paths.entry),
      publicPath
    },
  
    module: {
      rules: sync(join(loadersDir, '*.js')).map(loader => require(loader))
    },
  
    plugins: [
      new webpack.EnvironmentPlugin(JSON.parse(JSON.stringify(env))),
      new ExtractTextPlugin(env.NODE_ENV === 'production' ? '[name]-[hash].css' : '[name].css'),
      new ManifestPlugin({ fileName: paths.manifest, publicPath, writeToFileEmit: true }),
      new webpack.optimize.CommonsChunkPlugin({
        name: 'vendor',
        minChunks: ({ resource }) => /node_modules/.test(resource)
      })
    ],
  
    resolve: {
      extensions: paths.extensions,
      modules: [
        resolve(paths.source),
        resolve(paths.node_modules)
      ]
    },
  
    resolveLoader: {
      modules: [paths.node_modules]
    }
  }
  
new_contents: // Note: You must restart bin/webpack-dev-server for changes to take effect
  
  /* eslint global-require: 0 */
  /* eslint import/no-dynamic-require: 0 */
  
  const webpack = require('webpack')
  const { basename, dirname, join, relative, resolve } = require('path')
  const { sync } = require('glob')
  const ExtractTextPlugin = require('extract-text-webpack-plugin')
  const ManifestPlugin = require('webpack-manifest-plugin')
  const extname = require('path-complete-extname')
  const { env, paths, publicPath, loadersDir } = require('./configuration.js')
  
  const extensionGlob = `**/*{${paths.extensions.join(',')}}*`
  const packPaths = sync(join(paths.source, paths.entry, extensionGlob))
  
  module.exports = {
    entry: packPaths.reduce(
      (map, entry) => {
        const localMap = map
        const namespace = relative(join(paths.source, paths.entry), dirname(entry))
        localMap[join(namespace, basename(entry, extname(entry)))] = resolve(entry)
        return localMap
      }, {}
    ),
  
    output: {
      filename: '[name].js',
      chunkFilename: '[name]-[chunkhash].js',
      path: resolve(paths.output, paths.entry),
      publicPath
    },
  
    module: {
      rules: sync(join(loadersDir, '*.js')).map(loader => require(loader))
    },
  
    plugins: [
      new webpack.EnvironmentPlugin(JSON.parse(JSON.stringify(env))),
      new ExtractTextPlugin(env.NODE_ENV === 'production' ? '[name]-[hash].css' : '[name].css'),
      new ManifestPlugin({ fileName: paths.manifest, publicPath, writeToFileEmit: true }),
      new webpack.optimize.CommonsChunkPlugin({
        name: 'vendor',
        minChunks: ({ resource }) => /node_modules/.test(resource)
      })
    ],
  
    resolve: {
      extensions: paths.extensions,
      modules: [
        resolve(paths.source),
        resolve(paths.node_modules)
      ]
    },
  
    resolveLoader: {
      modules: [paths.node_modules]
    },
  
    node: {
      // Called by http-link-header in an API we never use, increases
      // bundle size unnecessarily
      Buffer: false
    }
  }
  
subject: remove unnecessary buffer polyfill (#2833)