webpack.config.js

const slsw = require("serverless-webpack");
const nodeExternals = require("webpack-node-externals");
const CopyWebpackPlugin = require("copy-webpack-plugin");

module.exports = {
  entry: slsw.lib.entries,
  target: "node",
  node: {
    __dirname: true,
    __filename: true
  },
  // Since 'aws-sdk' is not compatible with webpack,
  // we exclude all node dependencies
  optimization: {
    minimize: true
  },
  performance: {
    // Turn off size warnings for entry points
    hints: false
  },
  externals: [nodeExternals()],
  // Run babel on all .js files and skip those in node_modules
  module: {
    rules: [
      {
        test: /\.js$/,
        loader: "babel-loader",
        include: __dirname,
        exclude: /node_modules/,
        query: {
          presets: ["es2015", "react-app", "stage-2"],
          plugins: ["css-modules-transform"]
        }
      },
      {
        test: /\.(png|jp(e*)g|svg)$/,
        use: [
          {
            loader: "url-loader",
            options: {
              limit: 8000,
              name: "images/[hash]-[name].[ext]"
            }
          }
        ]
      }
    ]
  },
  plugins: [
    new CopyWebpackPlugin([{ from: "client/build", to: "build" }], {
      debug: "info"
    })
  ]
};