webpack.config.js

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

module.exports = {
    entry: "./npm/scirius-bundle.js",
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                    loader: "babel-loader",
                    options: {
                        presets: ["@babel/preset-env"]
                    }
                }
            },
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: ['eslint-loader']
            },
            {
                test: /\.(sa|sc|c)ss$/,
                use: [
                    {
                        // After all CSS loaders we use plugin to do his work.
                        // It gets all transformed CSS and extracts it into separate
                        // single bundled file
                        loader: MiniCssExtractPlugin.loader,
                        options: {
                            publicPath: ''
                        }

                    },
                    {
                        loader: "css-loader",
                    },
                    {
                        loader: "sass-loader",
                    },
                    /* ... Other loaders ... */
                ]
            },
            {
                // Now we apply rule for images
                test: /\.(png|jpe?g|gif|svg)$/,
                use: [
                    {
                        // Using file-loader for these files
                        loader: "file-loader",

                        // In options we can set different things like format
                        // and directory to save
                        options: {
                            outputPath: 'images'
                        }
                    }
                ]
            },
            {
                // Apply rule for fonts files
                test: /\.(woff|woff2|ttf|otf|eot)$/,
                use: [
                    {
                        // Using file-loader too
                        loader: "file-loader",
                        options: {
                            outputPath: 'fonts'
                        }
                    }
                ]
            },
            {
                test: /\.svg$/,
                loader: "svg-inline-loader"
            }
        ]
    },
    plugins: [
        new MiniCssExtractPlugin({
            filename: "styles.css"
        })
    ],
    output: {
        path: path.resolve(__dirname, "rules/static/dist"),
        filename: "scirius-bundle.js"
    }
};