webpack.config.dev.js

const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const Dotenv = require('dotenv-webpack')

module.exports = {
    entry: './src/index.js',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: '[name].[contenthash].js',
    },
    mode: 'development',
    resolve: {
        extensions: ['.js']
    },
    module: {
        rules: [
            {
                test: /\.m?js$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader'
                }
            },
            {
                test: /\.css$/i,
                use: [MiniCssExtractPlugin.loader,
                    'css-loader',
                ],
            }
        ]
    },
    plugins: [
        new HtmlWebpackPlugin({
            inject: true,
            template: './public/index.html',
            filename: './index.html'
        }),
        new MiniCssExtractPlugin({
            filename: 'assets/[name].[contenthash].css'
        }),
        new Dotenv(),
    ],
}