Functions that you can compose to build the perfect Webpack configuration. These functions bake in best practices, so you can stop copy-pasting them from the internet!

View the API documentation here

• Install
• Usage
  • Step 1: Add scripts
  • Step 2: Configure Babel
  • Step 3: Configure Webpack
• Guides
  • Enabling TypeScript
  • Polyfill missing browser features
  • Enabling Fast Refresh

$ yarn add @stackup/webpack --dev

Add the following to your package.json.

{
  // ...
  "scripts": {
    "start": "webpack serve",
    "build": "webpack --env production"
  }
  // ...
}

After adding this configuration, you can run:

• yarn start to start the development server
• yarn build to create a production build

This library ships with a Babel preset to get you up and running quickly.

To configure Babel, add the following to your package.json:

{
  // ...
  "babel": {
    "presets": ["@stackup/webpack/babel-preset"]
  }
  // ...
}

This library provides a set of functions that can be composed to generate a production-ready webpack configuration file.

You can get started by copying the example here.

const path = require("path");
const webpack = require("@stackup/webpack");

module.exports = webpack.pipeline([
  // Set your entrypoint
  webpack.entry("./src/index.tsx"),

  // Output to `dist/`
  webpack.output({
    path: path.join(__dirname, "dist"),
    publicPath: "/",
  }),

  // More configuration goes here...
]);

To use TypeScript, just install it:

$ yarn add typescript --dev

Then, create a tsconfig.json file:

{
  "include": ["src", "types"],
  "compilerOptions": {
    "target": "esnext",
    "module": "esnext",
    "moduleResolution": "node",
    "jsx": "preserve",
    "lib": ["dom", "dom.iterable", "esnext"],
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "isolatedModules": true,
    "forceConsistentCasingInFileNames": true
  }
}

The target, module, moduleResolution, and jsx are especially important. Those settings above instruct TypeScript to let Babel do the heavy lifting.

First, specify which browsers you want your application to support in your package.json:

{
  // ...
  "browserslist": {
    "production": [">0.2%", "not dead", "not op_mini all"],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
  // ...
}

Next, insert the following line at the very top of your entrypoint:

import "core-js/stable";

The Babel preset that ships with @stackup/webpack will translate that import to a bunch of smaller imports based on your browserlist and the features that you application actually depends on. So, after compilation, it might look something like this:

import "core-js/modules/es.array.unscopables.flat";
import "core-js/modules/es.array.unscopables.flat-map";

Note: This feature is experimental.

To support fast refresh for React applications, you'll need to update your Babel configuration:

{
  // ...
  "babel": {
    "presets": [["@stackup/webpack/babel-preset", { "refresh": true }]]
  }
  // ...
}

Then, you'll need to enable fast refresh in your webpack configuration:

import * as webpack from "@stackup/webpack";

module.exports = webpack.pipeline([
  // ...
  webpack.refresh(),
  // ...
]);