webpack.config.js

const path = require("path")
const MiniCssExtractPlugin = require("mini-css-extract-plugin")
const ManifestPlugin = require("webpack-manifest-plugin")

module.exports = {
  entry: "./frontend/javascript/index.js",
  devtool: "source-map",
  // Set some or all of these to true if you want more verbose logging:
  stats: {
    modules: false,
    builtAt: false,
    timings: false,
    children: false
  },
  output: {
    path: path.resolve(__dirname, "output", "_bridgetown", "static", "js"),
    filename: "all.[contenthash].js"
  },
  resolve: {
    extensions: [".js", ".jsx"]
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: "../css/all.[contenthash].css"
    }),
    new ManifestPlugin({
      fileName: path.resolve(__dirname, ".bridgetown-webpack", "manifest.json")
    })
  ],
  module: {
    rules: [
      {
        test: /\.(js|jsx)/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["@babel/preset-env"],
            plugins: [
              ["@babel/plugin-proposal-decorators", { legacy: true }],
              ["@babel/plugin-proposal-class-properties", { loose: true }],
              [
                "@babel/plugin-transform-runtime",
                {
                  helpers: false
                }
              ],
              [
                "prismjs",
                {
                  languages: [
                    "markup",
                    "css",
                    "clike",
                    "javascript",
                    "bash",
                    "crystal",
                    "docker",
                    "erb",
                    "git",
                    "graphql",
                    "haml",
                    "liquid",
                    "markdown",
                    "markup-templating",
                    "ruby",
                    "scss",
                    "yaml"
                  ],
                  plugins: ["line-numbers"],
                  theme: "okaidia",
                  css: true
                }
              ]
            ]
          }
        }
      },
      {
        test: /\.(s[ac]|c)ss$/,
        use: [
          MiniCssExtractPlugin.loader,
          "css-loader",
          "postcss-loader",
          {
            loader: "sass-loader",
            options: {
              sassOptions: {
                includePaths: [path.resolve(__dirname, "src/_components")]
              }
            }
          }
        ]
      },
      {
        test: /\.woff2?$|\.ttf$|\.eot$|\.svg$/,
        loader: "file-loader",
        options: {
          outputPath: "../fonts",
          publicPath: "../fonts"
        }
      }
    ]
  }
}