old_contents: 'use strict';
  
  module.exports = {
    devtool: 'inline-source-map',
    module: {
      rules: [{
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      }, {
        test: /\.(css|scss)$/,
        loader: 'null-loader'
      }, {
        test: /\.(png|jpg|jpeg|gif|svg|woff|woff2|ttf|eot)$/,
        loader: 'file-loader'
      }, {
        test: /\.html$/,
        loader: 'raw-loader'
      }, {
        enforce: 'pre',
        test: /\.js$/,
        exclude: [
          /node_modules/,
          /\.spec\.js$/
        ],
        loader: 'istanbul-instrumenter-loader',
        query: {
          esModules: true
        }
      }]
    },
    devServer: {
      stats: 'minimal'
    }
  };
  
new_contents: module.exports = {
    devtool: 'inline-source-map',
    module: {
      rules: [{
        test: /\.js$/,
        loader: 'babel-loader',
        exclude: /node_modules/
      }, {
        test: /\.(css|scss)$/,
        loader: 'null-loader'
      }, {
        test: /\.(png|jpg|jpeg|gif|svg|woff|woff2|ttf|eot)$/,
        loader: 'file-loader'
      }, {
        test: /\.html$/,
        loader: 'raw-loader'
      }, {
        enforce: 'pre',
        test: /\.js$/,
        exclude: [
          /node_modules/,
          /\.spec\.js$/,
          /dev-server\.js/
        ],
        loader: 'istanbul-instrumenter-loader',
        query: {
          esModules: true
        }
      }]
    },
    devServer: {
      stats: 'minimal'
    }
  };
  
subject: Exclude dev-server file from coverage