react-you-do-you

An example of how I use React + Redux + Material-UI + TypeScript.

Or: The code I wish existed when I got started.
Or: A project template to start off on the right foot.

This is how I do it – you do you 💖

Deployed live version: ✨ https://netzwerg.github.io/react-you-do-you ✨

Setup & Tooling

• React 17 based on Vite:

  • Compilation, linting, etc.

  • Development mode with auto-reloading

  • Test watcher

  • Optimized production build

  • see Available Scripts

• Yarn 3 (with Plug’n’Play i.e. without node_modules)

• TypeScript 4.9 for compile-time safety

• Prettier for formatting, auto-triggered on commit via Husky

• Redux Toolkit for state management

• Material UI 5 component library (using MUI System for CSS)

• Ladle to build & test UI components in isolation

• Playwright to detect regressions through visual snapshots

• GitHub Actions & Pages Continuous Delivery

Structure

Organize by feature:

• Each feature gets its own folder

• Defines its own slice of models/actions/reducer

• Defines its own components, clearly separated into presentation (inside components folder) and glue-code/logic (inside containers folder)

State Management

• Keep state in a fully typed, immutable model:

  • Use interfaces or type aliases rather than classes (rule of thumb: prefer interfaces because they give better compile error message, use type aliases for sum type awesomeness)

  • Use TypeScript’s readonly keyword and Readonly[Array|Stream|Set|Map] utility types

• Use Redux Toolkit, an "opinionated, batteries-included toolset for efficient Redux development"

  • Compose feature-specific reducers

  • Write container components to connect presentation components to the Redux store. Why? Presentation components are more re-usable if they don’t know how state is shaped nor how it’s managed.

  • Use redux-thunk for async actions

  • Optional: Write Reducers with Immer

Broad Overview

User Interface

Use Material UI 5, a React component library based on Material Design:

• Huge selection of components, fully customizable

• Theme support (e.g. light vs dark)

• CSS utilities (MUI System)

Testing

I am mostly developing prototypes these days, so I am not an expert when it comes to testing. However, this is the minimum I always test:

• Slices: Making sure each action is handled correctly (~80% of my logic)

• Error-free rendering of each component ("Rendering Smoke Tests")

Ladle

The project contains a full Ladle configuration. Writing stories for your UI components allows building & testing them in isolation. Example stories are contained in src/stories.

To run locally:

yarn ladle serve

Playwright

An example setup to detect regressions through visual snapshots is configured in src/e2e

Note	These tests are not running automatically – adding them to your CI is up to you

To run the playwright tests locally, first install the required browser binaries:

yarn playwright install

Then, to run the tests:

1. Build ladle: yarn ladle build

2. Start ladle: yarn ladle preview -p 61000

3. Run playwright: yarn playwright test ./src/e2e/snapshot.spec.ts

Continuous Integration & Delivery

On every push or pull request, a set of GitHub Actions are kicked off:

• Run all tests

• Check for circular dependencies

• Build & deploy the app

If successful, the app is available on https://<username>.github.io/<reponame>; (via GitHub Pages).

Usage

Explore Locally

Warning

Requires Node ^14.17.0 || >=16.0.0 (Details)

git clone https://github.com/netzwerg/react-you-do-you.git
cd react-you-do-you
yarn install
yarn start

Editor Setup

Since we are using Yarn 3 with Plug’n’Play, Smart IDEs (such as VSCode or IntelliJ) require special configuration for TypeScript to work. See: Editor SDKs.

To setup VS Code, run the following command:

yarn dlx @yarnpkg/sdks vscode

Once the Editor SDK is installed, VS Code will ask you to choose a TypeScript version. Choose "Use Workspace Version".

As Project Template

• Rename root folder to my-fancy-new-project-name

• Replace all occurrences of react-you-do-you with my-fancy-new-project-name

• Remove existing Git repo: rm -rf .git

• Initialize a new Git repo: git init

Available Scripts

yarn start

Compiles and runs the app in development mode.

Open http://localhost:3000 to view it in the browser.

The page will reload if you make edits. You will also see any compile or lint errors in the console.

yarn test

Launches the test runner in interactive watch mode.

yarn run build

Builds the app for production to the build folder.

yarn run lint

Runs ESLint (with TypeScript support) on all *.ts or *.tsx files in the src directory.

yarn run lint:fix

Runs ESLint (with TypeScript support) on all *.ts or *.tsx files in the src directory, automatically fixing problems.

yarn ladle serve

Runs Ladle

© Rahel Lüthy 2019 - 2023 MIT License