webpack.config.js

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

module.exports = {
  entry: "./js/app.js",
  output: {
    filename: "app.js",
    path: path.resolve(__dirname, "../priv/static/js"),
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
        },
      },
      {
        test: /\.css$/i,
        use: [MiniCssExtractPlugin.loader, "css-loader"],
      },
      {
        test: /.(ttf|otf|eot|svg|woff(2)?)(\?[a-z0-9]+)?$/,
        use: [
          {
            loader: "file-loader",
            options: {
              name: "[name].[ext]",
              outputPath: "../fonts/",
            },
          },
        ],
      },
    ],
  },

  plugins: [
    new MiniCssExtractPlugin({filename: "../css/app.css"}),
    new CopyPlugin({
      patterns: [{ from: "static", to: "../" }],
    }),
    new webpack.ProvidePlugin({
      $: "jquery",
      jQuery: "jquery",
      Popper: ["popper.js", "default"],
    }),
  ],
};