webpack.config.js

const path = require('path');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
    module: {
        rules: [
            {
                test: /\.ts?$/,
                exclude: /node_modules/,
                loader: 'babel-loader',
                options: {
                    cacheDirectory: true,
                    babelrc: false,
                    presets: [
                        ['@babel/preset-env', { targets: 'maintained node versions' }],
                        '@babel/preset-typescript'
                    ],
                    plugins: [
                        ['@babel/plugin-proposal-class-properties', { loose: true }]
                    ]
                }
            },
            {
                test: /\.tsx?$/,
                exclude: /node_modules/,
                loader: 'babel-loader',
                options: {
                    cacheDirectory: true,
                    babelrc: false,
                    presets: [
                        ['@babel/preset-env', { targets: { browsers: 'last 2 versions ' } }],
                        '@babel/preset-typescript',
                        '@babel/preset-react'
                    ],
                    plugins: [
                        ["react-hot-loader/babel"],
                        ['@babel/plugin-proposal-class-properties', { loose: true }]
                    ]
                }
            },
            {
                test: /\.s[ac]ss$/i,
                loaders: ['sass-loader']
            },
            {
                test: /\.css$/,
                loaders: ['css-loader']
            },
            {
                test: /\.(gif|png|jpe?g|svg)$/,
                use: [
                    'file-loader',
                    {
                        loader: 'image-webpack-loader',
                        options: {
                            disable: false
                        }
                    }
                ]
            },
            // TODO why do we still need to inline import these?
            {
                test: /\.(md|txt)$/,
                loaders: [
                    'html-loader',
                    'raw-loader'
                ]
            },
            // All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
            {
                enforce: 'pre',
                test: /\.js$/,
                loader: 'source-map-loader'
            }
        ]
    },
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    resolve: {
        extensions: ['.tsx', '.ts', '.js', '.json']
    },
    devtool: 'source-map',
    plugins: [
        new CleanWebpackPlugin(),
        new ForkTsCheckerWebpackPlugin({
            reportFiles: ['src/main/**/*']
        }),
        new ForkTsCheckerWebpackPlugin({
            reportFiles: ['src/renderer/**/*']
        }),
        new webpack.NamedModulesPlugin(),
        new HtmlWebpackPlugin(),
        new webpack.DefinePlugin({
            'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV || 'dev')
        })
    ]
};