Webpack serverless config

webpack.conf.js

const webpack = require('webpack');
const path = require('path');
const config = require('./config');

module.exports = {
  entry: {
    login: path.join(__dirname, 'login', 'handler.js'),
    email: path.join(__dirname, 'email', 'handler.js'),
    graphql: path.join(__dirname, 'back', 'api', 'data', 'handler.js'),
  },
  resolve: {
    root: path.resolve('.'),
    extensions: ['', '.js'],
  },
  output: {
    libraryTarget: 'commonjs',
    path: path.join(__dirname, '.cache'),
    filename: '[name].js',
    chunkFilename: '[chunkhash].js',
  },
  target: 'node',
  devtool: 'none',
  debug: true,
  externals: ['aws-sdk'],
  module: {
    loaders: [
      {
        test: /\.js$/,
        loaders: ['babel'],
        exclude: /node_modules/,
        query: {
          plugins: ['transform-runtime'],
          babelrc: false,
          presets: ['es2015', 'stage-0'],
        },
      },
      {
        test: /\.json$/,
        loaders: ['json'],
        include: __dirname,
      },
    ],
  },
  plugins: [
    new webpack.DefinePlugin({
      __STAGE__: config.stage,
      __REGION__: config.region,
    }),
    new webpack.optimize.OccurrenceOrderPlugin(),
    new webpack.optimize.AggressiveMergingPlugin(),
  ],
};