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React Workspaces Playground Screenshots

Join us on Slack

πŸ’₯ Now supports TypeScript and React-App-Rewired!

Features

  • βš›οΈ Create React App 3 (React 16.8)
  • πŸ“– Storybook 5
  • 🐈 Yarn Workspaces
  • πŸ‰ Lerna 3
  • ✨ Host Multiple CRA Apps, Component Libraries & Storybooks in one Monorepo
  • πŸ”₯ Hot Reload all Apps, Components & Storybooks
  • πŸ‘¨β€πŸ”¬ Test all workspaces with Eslint & Jest using one command
  • :octocat: Deploy your apps to Github Pages using one command

Contents

Setup

Pre-Requisites

  • Yarn 1.13.0
  • Node 11.14.0

Installation

git clone git@github.com:react-workspaces/react-workspaces-playground.git
cd react-workspaces-playground
yarn

Adding workspace dependencies

yarn workspace <workspace_name> <command>

This will run the chosen Yarn command in the selected workspace.

Example:

yarn workspace my-app add react-router-dom --dev

This will add react-router-dom as dependencies in your packages/my-app/package.json. To remove dependency use remove instead of add

Usage

Starting Project in Workspace

From your project root type start command for desired app

yarn workspace @project/app-single-comp start

All available start scripts

"scripts": {
    "start:app-ant-design": "yarn workspace @project/app-ant-design-rewired start",
    "start:app-multi": "yarn workspace @project/app-multi-comps start",
    "start:app-single": "yarn workspace @project/app-single-comp start",
    "start:app-ts": "yarn workspace @project/app-typescript start",
    "start:storybook": "yarn workspace @project/storybook storybook",
    "start:storybook-ts": "yarn workspace @project/storybook-typescript storybook",
    ...
  }

Starting The Storybook

yarn start:storybook

Linting & Testing

yarn workspace <workspace-root> test

Deploying to GitHub Pages

Update the homepage URL in app-one/package.json to reflect your GitHub Pages URL.

{
  "name": "@project/app-single-comp",
  "private": true,
  "homepage": "https://react-workspaces.github.io/react-workspaces-playground",
  "scripts": {
    "deploy": "gh-pages -d build"
  }
}

Run the deploy script.

yarn workspace <workspace-root> deploy

Creating a New CRA App

Use Create React App's --scripts-version flag to create a new React App with Yarn Workspaces support.

create-react-app --scripts-version @react-workspaces/react-scripts my-app

To create new TS app use Create React App's --template flag with --scripts-version flag to create a new React App with Yarn Workspaces support and Typescript.

npx create-react-app --scripts-version @react-workspaces/react-scripts --template typescript my-ts-app

How Does It Work?

React Workspaces Playground uses a custom version of react-scripts under the hood. The custom react-scripts is an NPM package to use in place of the react-scripts dependency that usually ships with Create React App. See: (@react-workspaces/react-scripts) on NPM.

Support for Yarn Workspaces was added by:

  1. Adding yarn-workspaces.js file to resolve workspaces modules.

  2. Updating the Webpack config:

    • Use main:src in package.json for loading development source code.

    • Use production or development settings based on your yarn workspaces settings in your <workspaces-root>/package.json:

      {
        "workspaces": {
          "packages": ["packages/apps/*", "packages/components", "packages/storybook"],
          "production": true,
          "development": true,
          "package-entry": "main:src"
        }
      }

Minimal updates to the Webpack config were required.

Diff: webpack.config.js

--- a/./facebook/react-scripts/config/webpack.config.js
+++ b/react-workspaces/react-scripts/config/webpack.config.js
@@ -9,7 +9,6 @@
'use strict';

const fs = require('fs');
const isWsl = require('is-wsl');
const path = require('path');
const webpack = require('webpack');
const resolve = require('resolve');
@@ -28,15 +27,14 @@ const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeM
const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
const getCSSModuleLocalIdent = require('react-dev-utils/getCSSModuleLocalIdent');
const paths = require('./paths');
const modules = require('./modules');
+const workspaces = require('./workspaces');
const getClientEnvironment = require('./env');
const ModuleNotFoundPlugin = require('react-dev-utils/ModuleNotFoundPlugin');
const ForkTsCheckerWebpackPlugin = require('react-dev-utils/ForkTsCheckerWebpackPlugin');
const typescriptFormatter = require('react-dev-utils/typescriptFormatter');
// @remove-on-eject-begin
const getCacheIdentifier = require('react-dev-utils/getCacheIdentifier');
// @remove-on-eject-end

// Source maps are resource heavy and can cause out of memory issue for large source files.
const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';
@@ -53,12 +51,22 @@ const cssModuleRegex = /\.module\.css$/;
const sassRegex = /\.(scss|sass)$/;
const sassModuleRegex = /\.module\.(scss|sass)$/;

+const workspacesConfig = workspaces.init(paths);
+
// This is the production and development configuration.
// It is focused on developer experience, fast rebuilds, and a minimal bundle.
module.exports = function(webpackEnv) {
  const isEnvDevelopment = webpackEnv === 'development';
  const isEnvProduction = webpackEnv === 'production';

+  const workspacesMainFields = [workspacesConfig.packageEntry, 'main'];
+  const mainFields =
+    isEnvDevelopment && workspacesConfig.development
+      ? workspacesMainFields
+      : isEnvProduction && workspacesConfig.production
+        ? workspacesMainFields
+        : undefined;
+
  // Webpack uses `publicPath` to determine where the app is being served from.
  // It requires a trailing slash, or the file assets will get an incorrect path.
  // In development, we always serve from the root. This makes config easier.
@@ -279,6 +282,7 @@ module.exports = function(webpackEnv) {
      extensions: paths.moduleFileExtensions
        .map(ext => `.${ext}`)
        .filter(ext => useTypeScript || !ext.includes('ts')),
+      mainFields,
      alias: {
        // Support React Native Web
        // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
@@ -330,7 +335,11 @@ module.exports = function(webpackEnv) {
              loader: require.resolve('eslint-loader'),
            },
          ],
-          include: paths.appSrc,
+          include: isEnvDevelopment && workspacesConfig.development
+          ? [paths.appSrc, workspacesConfig.paths]
+          : isEnvProduction && workspacesConfig.production
+            ? [paths.appSrc, workspacesConfig.paths]
+            : paths.appSrc,
        },
        {
          // "oneOf" will traverse all following loaders until one will
@@ -352,7 +361,12 @@ module.exports = function(webpackEnv) {
            // The preset includes JSX, Flow, TypeScript, and some ESnext features.
            {
              test: /\.(js|mjs|jsx|ts|tsx)$/,
-              include: paths.appSrc,
+              include:
+                isEnvDevelopment && workspacesConfig.development
+                  ? [paths.appSrc, workspacesConfig.paths]
+                  : isEnvProduction && workspacesConfig.production
+                    ? [paths.appSrc, workspacesConfig.paths]
+                    : paths.appSrc,
              loader: require.resolve('babel-loader'),
              options: {
                customize: require.resolve(

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βš›οΈ 🐈 Zero Config Create-React-App Monorepos with Yarn Workspaces, Lerna and React Storybook.

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