webpack.dev.js

const path = require('path')
const webpack = require('webpack')
const HtmlWebPackPlugin = require("html-webpack-plugin")
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
const Dotenv = require('dotenv-webpack');


module.exports = {
    entry: './src/client/index.js',
    mode: 'development',
    devtool: 'source-map',
    stats: 'verbose',
    output: {
        libraryTarget: 'var',
        library: 'Client'
    },
    module: {
        rules: [
            {
                test: '/\.js$/',
                exclude: /node_modules/,
                loader: "babel-loader"
            },
            {
                test: /\.scss$/,
                use: [ 'style-loader', 'css-loader', 'sass-loader' ]
            }
        ]
    },
    plugins: [
        new HtmlWebPackPlugin({
            template: "./src/client/views/index.html",
            filename: "./index.html",
        }),
        new CleanWebpackPlugin({
            // Simulate the removal of files
            dry: true,
            // Write Logs to Console
            verbose: true,
            // Automatically remove all unused webpack assets on rebuild
            cleanStaleWebpackAssets: true,
            protectWebpackAssets: false
        }),
        new Dotenv({
            // path: path.resolve(__dirname, '/.env'), // Path to .env file (this is the default)
            path: './.env',
            safe: false, // load .env.example (defaults to "false" which does not use dotenv-safe)
            systemvars: true,
            allowEmptyValues: true,
            silent: true,
            expand: true,
            defaults: true
           })
    ]
}