webpack.config.js

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

/*
This line is only required if you are specifying `TS_NODE_PROJECT` for whatever reason.
 */
// delete process.env.TS_NODE_PROJECT;

module.exports = {
	context: __dirname,
	mode: slsw.lib.webpack.isLocal ? 'development' : 'production',
	entry: slsw.lib.entries,
	resolve: {
		extensions: ['.mjs', '.json', '.ts'],
		symlinks: false,
		cacheWithContext: false,
		plugins: [
			new TsconfigPathsPlugin({
				configFile: './tsconfig.paths.json',
			}),
		],
	},
	output: {
		libraryTarget: 'commonjs',
		path: path.join(__dirname, '.webpack'),
		filename: '[name].js',
	},
	optimization: {
		concatenateModules: false,
	},
	target: 'node',
	externals: [nodeExternals()],
	module: {
		rules: [
			// all files with a `.ts` or `.tsx` extension will be handled by `ts-loader`
			{
				test: /\.(ts?)$/,
				loader: 'ts-loader',
				exclude: [
					[
						path.resolve(__dirname, 'node_modules'),
						path.resolve(__dirname, '.serverless'),
						path.resolve(__dirname, '.webpack'),
					],
				],
				options: {
					transpileOnly: true,
					experimentalWatchApi: true,
				},
			},
		],
	},
	plugins: [],
}