webpack.main.config.js

const path = require('path');
const webpack = require('webpack');
const { merge } = require('webpack-merge');
const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');

const baseConfig = require('./webpack.base.config');

module.exports = merge(baseConfig, {
  target: 'electron-main',
  entry: {
    main: './src/main/main.ts'
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
        options: {
          cacheDirectory: true,
          babelrc: false,
          presets: [
            ['@babel/preset-env', { targets: 'maintained node versions' }],
            '@babel/preset-typescript'
          ],
          plugins: [['@babel/plugin-proposal-class-properties', { loose: true }]]
        }
      }
    ]
  },
  plugins: [
    new ForkTsCheckerWebpackPlugin() //{reportFiles: ['src/main/**/*']})
    /*new webpack.DefinePlugin({
            'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV || 'development')
        })*/
  ]
});