webpack.config.js

const path = require('path');
const webpack = require('webpack');

module.exports = {
    entry: './src/main.jsx',
    mode: process.env.WEBPACK_SERVE ? 'development' : 'production',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'bundle.js',
        publicPath: '/dist/',
    },
    devServer: {
        static: {
            directory: './'
        },
    },
    resolve: {
        extensions: ['*', '.js', '.jsx'],
        alias: {
            'three/CopyShader': path.join(__dirname, 'node_modules/three/examples/js/shaders/CopyShader.js')
        }
    },
    plugins: [
        new webpack.ProvidePlugin({
            'THREE': 'three'
        })
    ],
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                include: path.resolve(__dirname, 'src'),
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env', '@babel/preset-react']
                    }
                }
            }
        ]
    }
};