webpack.config.js

const path = require('path')
const nodeExternals = require('webpack-node-externals')
const TsconfigPathsPlugin = require('tsconfig-paths-webpack-plugin')

module.exports = {
  context: __dirname,
  entry: './src/index.ts',
  externals: [nodeExternals()],
  module: {
    rules: [
      {
        exclude: /node_modules/,
        test: /.ts$/,
        use: {
          loader: 'ts-loader'
        }
      }
    ]
  },
  node: {
    __dirname: false
  },
  resolve: {
    extensions: ['.ts', '.js'],
    plugins: [
      new TsconfigPathsPlugin({
        baseUrl: './src'
      })
    ]
  },
  output: {
    filename: 'index.js',
    path: path.resolve(__dirname, 'dist'),
    publicPath: '/dist/'
  },
  target: 'node'
}