webpack.config.js

const slsw = require('serverless-webpack');
const nodeExternals = require('webpack-node-externals');
const path = require('path');

module.exports = {
  entry: slsw.lib.entries,
  resolve: {
    extensions: [
      '.js',
      '.json',
      '.ts',
    ],
  },
  output: {
    libraryTarget: 'commonjs',
    path: path.join(__dirname, '.webpack'),
    filename: '[name].js',
  },
  target: 'node',
  // Since 'aws-sdk' is not compatible with webpack,
  // we exclude all node dependencies
  externals: [nodeExternals()],
  // Run babel on all .js files and skip those in node_modules
  module: {
    rules: [
      {
        test: /\.ts$/,
        use: [
          {
            loader: 'ts-loader',
          },
        ],
        include: __dirname,
        exclude: /node_modules/,
      },
    ],
  },
  mode: slsw.lib.webpack.isLocal ? "development" : "production"
};