webpack.config.js

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

module.exports = {
  context: __dirname,
  entry: slsw.lib.entries,
  target: 'node',
  output: {
    libraryTarget: 'commonjs',
    path: path.join(__dirname, './dist'),
    filename: '[name].js',
  },
  externals: [nodeExternals()],
  mode: slsw.lib.webpack.isLocal ? 'development' : 'production',
  devtool: 'source-map',
  module: {
    rules: [
      {
        test: /\.(tsx?)$/,
        loader: 'ts-loader',
        include: [
          path.resolve(__dirname, 'src'),
        ],
        exclude: [
          [
            path.resolve(__dirname, 'node_modules'),
            path.resolve(__dirname, '.serverless'),
            path.resolve(__dirname, '.webpack'),
          ],
        ],
        options: {
          transpileOnly: true,
          experimentalWatchApi: true,
        },
      },
    ]
  },
  resolve: {
    extensions: ['.ts', '.tsx'],
    alias: {
      '@': path.join(__dirname, 'src')
    }
  }
}