webpack.config.js

const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

module.exports = {
    mode: "development",
    entry: "./src/index.js",
    output: {
        path: path.resolve(__dirname, "public"),
        filename: "bundle.js",
    },
    context: __dirname,
    devtool: "source-map",
    plugins: [new MiniCssExtractPlugin({ filename: "main.css" })],
    module: {
        rules: [
            {
                test: /\.jsx?$/,
                exclude: /node_modules/,
                use: {
                    loader: "babel-loader",
                    options: {
                        presets: ["@babel/preset-react"]
                    }
                }
            },
            {
                test: /\.less$/,
                use: [MiniCssExtractPlugin.loader, "css-loader", "less-loader"],
            },
            {
                test: /\.css$/,
                use: [MiniCssExtractPlugin.loader, "css-loader"],
            },
        ],
    }
}