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0.2.0 • Public • Published

Zen React Scripts

webpack@5 scripts for building and developing React SPA's. Works great with create-zen-app which is based on this repo for webpack scripts and configuration. Inspired from react-scripts.

This project aims to contain have latest updates from all dependencies to be secure and prevent any warning on actions or npm/yarn log messages.

Also you're able to use Web Workers with TypeScript with this.


Final build will be compiled into preact and @babel/runtime will optimize re-use of classes in runtime. So:

yarn add preact @babel/runtime
npm i preact @babel/runtime

then you're ready to go:

yarn add -D zen-react-scripts
npm i -D zen-react-scripts

Folder Structure

├── README.md
├── node_modules
├── package.json
├── .gitignore
├── .eslintrc.json
├── .env
├── public
│   ├── manifest.json
│   └── index.html
└── src
    ├── components/
    ├── App.tsx
    ├── preload.js
    ├── index.js
    └── logo.svg

Sample config for package.json

    "scripts": {
        "dev": "zen-react-scripts dev",
        "build": "zen-react-scripts build",
        "local": "zen-react-scripts local"
    "browserslist": "edge >= 13, firefox >= 50, and_ff >= 50, chrome >= 49, and_chr >= 49, ios >= 9.4, safari >= 9.4, samsung >= 5, and_uc >= 11.8, opera >= 40, op_mob >= 40, baidu >= 7"

Environment Files

By default .env file will be checked for environment variables. If you place .env.production or .env.development, these files will overwrite default .env file that you've placed before.



Starts project for development on http://localhost:3000 and opens a tab in your default browser.


Starts development server with https.

--silent or -s

Starts development server in the background, without creating a tab or opening the browser. Useful for testing.


Builds the react project for deployment. Will be placed in ./build/


Builds the project and starts an instance on http://localhost:3001 via a basic express static server. Useful for checking the build on production environment.


Starts built project for production on http://localhost:3001.


Builds your app with a unique random hash like app.9dbf42.js in all of your assets. If not specified it uses [contenthash:6] which only changes when you change the content of the file. via NPM

npm run build -- --hash

via Yarn

yarn build --hash


Builds and creates a report on http://localhost:3002

via NPM

npm run build -- --analyze

via Yarn

yarn build --analyze

Custom Webpack Configuration

You can overwrite the custom configuration of your app via placing webpack.config.js in your project root. Webpack configurations can passed inside production and development keys in object.

module.exports = {
  production: {
    output: {
      publicPath: "/yourDesiredPath/",
  development: {
    devtool: "source-map",

Web Workers with React

Now you can start using Web Workers! Two things are important here: Files that contain a Web Worker must end with *.worker.ts, and they must start with the following two lines of code in order to work nicely together with TypeScript:

declare const self: DedicatedWorkerGlobalScope;
export default {} as typeof Worker & { new (): Worker };

// Your code ...

In your application, you can import your Web Workers like a normal module, and instantiate them as a class. For example:

import MyWorker from "./MyWorker.worker";

const myWorkerInstance: Worker = new MyWorker();

Loading Custom Font Files

Loading custom files via URL relies on relative paths in your file tree. An example with file tree is here:

// src/styles/main.scss
@font-face {
  font-family: "FFMark";
  src: url("./fonts/ffmark.woff2");

└─ src
  ├── components/
  ├── styles/
  │   ├── fonts/
  │   │   └── ffmark.woff2
  │   └── main.sscs
  ├── App.tsx
  └── index.js

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npm i zen-react-scripts

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  • gozenc