old_contents: var path = require('path');
  var webpackConfig = require('../webpack.config.js');
  
  var defaultResolve = webpackConfig.resolve;
  
  function noddyClone(obj) {
    return JSON.parse(JSON.stringify(obj));
  }
  
  var buildResolve = noddyClone(defaultResolve);
  buildResolve.modules.push('src/');
  
  var testConfig = {
    entry: './tests/runner.js',
    output: {
      path: path.join(__dirname, '../dist'),
      filename: 'tests.js',
    },
  };
  
  module.exports = {
    options: webpackConfig,
    build: {
      resolve: buildResolve,
    },
    buildwatch: {
      watch: true,
      keepalive: true,
      resolve: buildResolve,
    },
    test: {
      entry: testConfig.entry,
      output: testConfig.output,
      resolve: buildResolve,
    },
    coverage: {
      entry: testConfig.entry,
      output: testConfig.output,
      resolve: buildResolve,
      module: {
        rules: [
          {
            use: 'babel-istanbul-loader',
            // babel options are in .babelrc
            exclude: /(node_modules|bower_components|tests)/,
            enforce: 'pre',
            test: /\.js$/,
          },
        ],
      },
    },
  };
  
new_contents: var path = require('path');
  var webpackConfig = require('../webpack.config.js');
  
  var defaultResolve = webpackConfig.resolve;
  
  function noddyClone(obj) {
    return JSON.parse(JSON.stringify(obj));
  }
  
  var buildResolve = noddyClone(defaultResolve);
  buildResolve.modules.push('src/');
  
  var testConfig = {
    entry: './tests/runner.js',
    output: {
      path: path.join(__dirname, '../dist'),
      filename: 'tests.js',
    },
  };
  
  module.exports = {
    options: webpackConfig,
    build: {
      resolve: buildResolve,
    },
    buildwatch: {
      watch: true,
      cache: true,
      keepalive: true,
      resolve: buildResolve,
    },
    test: {
      entry: testConfig.entry,
      output: testConfig.output,
      resolve: buildResolve,
    },
    coverage: {
      entry: testConfig.entry,
      output: testConfig.output,
      resolve: buildResolve,
      module: {
        rules: [
          {
            use: 'babel-istanbul-loader',
            // babel options are in .babelrc
            exclude: /(node_modules|bower_components|tests)/,
            enforce: 'pre',
            test: /\.js$/,
          },
        ],
      },
    },
  };
  
subject: Set explicit caching when watching