old_contents: const VERSION  = require('./package.json').version;
  const IS_NPM   = process.env.IS_NPM;
  const path     = IS_NPM ? __dirname : __dirname + '/build/sdk';
  const filename = IS_NPM ? 'sdk.js' : 'sdk-' + VERSION + '.js';
  
  module.exports = {
    entry: './index.js',
    output: {
      path: path,
      filename: filename,
      libraryTarget: 'umd'
    },
    module: {
      loaders: [{
        test: /\.js?$/,
        exclude: /(node_modules)/,
        loader: 'babel-loader',
        query: {
          cacheDirectory: true
        }
      },{
        test: /\.worker\.js?$/,
        exclude: /(node_modules)/,
        loader: 'worker-loader?inline=true',
        query: {
          inline: true
        }
      }]
    },
    devServer: {
      contentBase: './examples'
    }
  };
  
new_contents: const VERSION  = require('./package.json').version;
  const IS_NPM   = process.env.IS_NPM;
  const path     = IS_NPM ? __dirname : __dirname + '/build/sdk';
  const filename = IS_NPM ? 'sdk.js' : 'sdk-' + VERSION + '.js';
  
  module.exports = {
    entry: './index.js',
    output: {
      path: path,
      filename: filename,
      libraryTarget: 'umd'
    },
    module: {
      loaders: [{
        test: /\.js?$/,
        exclude: /(node_modules)/,
        loader: 'babel-loader',
        query: {
          cacheDirectory: true
        }
      },{
        test: /\.worker\.js?$/,
        exclude: /(node_modules)/,
        loader: 'worker-loader?inline=true',
        query: {
          inline: true
        }
      }]
    },
    devServer: {
      contentBase: './examples'
    },
    devtool: 'source-map'
  };
  
subject: Enable source maps on the dev server