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  • A toolkit, not a boilerplate.
  • Uses Webpack 4, Babel 7 and Karma 5.
  • Provides tooling for React apps and components, Preact apps, Inferno apps, and vanilla JS web apps and npm modules.
  • Use modern JavaScript features and JSX.
  • Use proposed JavaScript features now.
  • Import CSS (and font resources) and images to be managed by Webpack.
  • Autoprefixed CSS, so you don't need to write browser prefixes; you can also configure your own PostCSS plugins.
  • Plugin modules which add support for the Sass, Less and Stylus stylesheet languages.

Development / DX:

  • Quick development commands for React, Preact and Inferno which reduce the time from idea to running code.
  • Development server with Hot Module Replacement, and syntax error and React render() error overlays.
  • User-friendly reporting of build status and errors in the CLI.
  • Prompts to continue with a different port if the intended dev server port is not available.
  • Express middleware for serving the same development Webpack build from your own server.
  • Experimental: Automatically install dependencies from npm without restarting your development server by using an --auto-install flag.
  • Experimental: Write destructured ES module imports which transpile to cherry-picked imports for specific modules to keep your bundle size down.


  • Run unit tests with Karma in headless Chrome, using Mocha and Expect, without any configuration.
  • Flexible defaults allow tests to be organised using a number of naming schemes, with tests in a separate directory, co-located with the code, or both.
  • Code coverage reporting.
  • Project skeletons ready to run tests on Travis CI and post code coverage results to Coveralls/
  • Convenient to configure your preferred testing framework and other browsers instead of the defaults, with bundled support for launching tests in Chrome.


  • Optimised Webpack build prepares JS, CSS and images for production, with deterministic filename hashes for long-term caching, and sourcemaps for debugging.
  • Production optimisations for React apps: hoisting static elements and removing propTypes
  • Automatic creation of a separate vendor bundle.
  • Flags to try a build which replaces React with Preact or Inferno via a compatibility layer, for a much smaller payload.


  • Builds components and modules for publishing to npm with ES5 (including CommonJS export interop), ES modules and UMD builds.
  • Project skeletons include a package.json config files whitelist to avoid bloating your published package.
  • React component skeleton includes a demo app ready to develop and build using the same React app development setup.
  • React component propTypes are automatically wrapped with an environment check, for elimination from production builds.


  • Use a single configuration file to customise Babel, Webpack, Karma and npm builds if you need to.
  • Declarative config for Webpack rules and plugin settings makes then easy to tweak.
  • Convenience configuration for commonly-used features like Webpack aliases and expression replacements.
  • Compatibility configuration for libraries which commonly cause Webpack issues, e.g. for bundling Moment.js with only specified locales.