Welcome to the final phase of the React Engineering Academy, Production React. This phase covers how to build, test, and deploy production-grade React applications: writing automated tests (Unit, Integration, and E2E), setting up deployment strategies (Edge vs. CDN), and configuring CI/CD automation pipelines.

Building component layouts is only the first step. Shipping software to users requires ensuring stability, performance, and automatic delivery.

• If you deploy code without automated tests, minor adjustments to core utilities can introduce regressions that break production features.
• If you build bundles without optimizing assets, pages load slowly, leading to high bounce rates.
• If you deploy changes manually from developer terminals, environments desynchronize, and deployments become error-prone.

Mastering production operations ensures your applications remain stable, performant, and automatically updated.

By the end of this phase, you will be able to:

• Write unit and integration tests using Jest and Vitest for hooks and components.
• Set up and run end-to-end (E2E) tests using Playwright.
• Optimize production bundles by configuring asset minification, code splitting, and tree shaking.
• Deploy React apps to platforms like Vercel, Netlify, or AWS using CDNs and Edge networks.
• Configure GitHub Actions to automate linting, testing, and deployment (CI/CD).

Before starting this phase, you should have completed:

1. Phase 1: React Fundamentals
2. Phase 2: Components & JSX
3. Phase 3: State Management
4. Phase 4: React Hooks
5. Phase 5: Routing & Data Fetching
6. Phase 6: Performance Optimization
7. Phase 7: Advanced React
8. Phase 8: Modern React
9. Phase 9: Architecture & Enterprise Patterns

This phase is broken down into three comprehensive modules:

flowchart TD
    M1[Module 1: Testing Principles] --> M2[Module 2: Deployment Strategies]
    M2 --> M3[Module 3: CI/CD Pipelines]

1. Module 1: Testing Principles
   Writing unit tests for hooks, component rendering tests with React Testing Library, and E2E testing with Playwright.
2. Module 2: Deployment Strategies
   Production build compilation, static asset hosting, CDNs, Edge rendering configurations, and caching rules.
3. Module 3: CI/CD Pipelines
   Automating quality gates using GitHub Actions, continuous deployment triggers, and hosting platform integrations.

• Total Time: 8 - 10 Hours
• Module 1: 4 Hours
• Module 2: 2 Hours
• Module 3: 3 Hours
• Exercises & Projects: 1 Hour

• Enterprise SaaS Platforms: Configuring automated test runs to verify features before they are merged to main branch.
• High-Traffic E-Commerce Sites: Setting up global CDN deployments to ensure pages load instantly for international users.
• Agile Development Teams: Deploying preview branches automatically on every pull request to gather feedback.

• Mock Hook test case: Writing a Vitest test case for a custom input toggle hook.
• Vite bundle visualizer audit: Running asset audits using Vite rollup-plugin-visualizer.
• GitHub Action pipeline build: Writing a YAML workflow script to run tests on pull requests.

• Automated Deployment Pipeline: Setting up a sample workspace project with Vitest test suites, Vite asset bundling rules, and GitHub Actions configs to automate deployments.

• Performance Optimization Overview
• Architecture & Enterprise Patterns

• React Testing Library: Official Documentation
• Playwright: Official Documentation