webpack.config.js

/* === dont forget to import scss to main.js file === */
/* ===> import './main.scss'; <=== */

var path = require("path");

module.exports = {
    entry: "./src/js/App.js",
    output: {
        path: __dirname,
        filename: "app.js",
        publicPath: "/"
    },
    module: {
        rules: [
            {
                test: /\.js$/,
                use: {
                    loader: "babel-loader",
                    options: { presets: ["es2015"] }
                }
            },
            {
                test: /\.scss$/,
                use: [
                    {
                        loader: "style-loader" // creates style nodes from JS strings
                    },
                    {
                        loader: "css-loader" // translates CSS into CommonJS
                    },
                    {
                        loader: "sass-loader" // compiles Sass to CSS
                    }
                ]
            }
        ]
    }
};