如何移除Webpack依赖，将基于Webpack+ES6的React项目转为标准React项目

Got it, let's break down exactly how to strip out all Webpack-related stuff from your React project and turn it into a standard, runnable setup. I'll cover two common approaches depending on your needs:

Create React App (CRA) is the official, battle-tested setup for React projects—it handles build tools under the hood so you don't have to mess with Webpack directly. Here's how to move your code over:

• First, spin up a new CRA project in your terminal:

  npx create-react-app my-standard-react-app
  

• Navigate into your existing Webpack project, then copy all your core code (everything in the src folder—components, pages, utility functions, assets like images/fonts) into the src folder of the new CRA project. Double-check import paths to fix any broken references (e.g., if you had custom aliases in Webpack, you'll need to adjust those to relative paths or set up aliases in CRA if needed).
• Replace the contents of the CRA project's public folder with your original project's static assets: custom index.html content, favicons, robots.txt, etc.
• Install any additional dependencies your project uses (excluding Webpack-related ones). For example, if you used react-router-dom or axios, run:

  npm install react-router-dom axios
  

• Test the setup by running npm start—fix any minor errors like missing dependencies or path issues that pop up.
• Once everything works, you can ditch your old Webpack project folder and use the CRA project as your new codebase. For production builds, just run npm run build to generate optimized static files.

If you want a completely build-free setup (no Node.js required for development), you can use React's CDN links to run your code directly in the browser:

• Create a new folder (e.g., static-react-app) to hold your files.
• Inside it, create an index.html file with the following structure. This pulls in React, ReactDOM, and Babel (to compile JSX on the fly):

  <!DOCTYPE html>
  <html lang="en">
    <head>
      <meta charset="UTF-8" />
      <meta name="viewport" content="width=device-width, initial-scale=1.0" />
      <title>My Static React App</title>
      <!-- React and ReactDOM CDNs (use .production.min.js for production) -->
      <script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script>
      <script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script>
      <!-- Babel for compiling JSX in the browser -->
      <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
      <!-- Link to your custom styles -->
      <link rel="stylesheet" href="styles.css" />
    </head>
    <body>
      <div id="root"></div>
      <!-- Your React code (marked as text/babel for Babel to process) -->
      <script type="text/babel" src="app.js"></script>
    </body>
  </html>
  

• Create an app.js file and migrate your React components here. Note a few differences from your Webpack setup:
  • You don't need to import React or ReactDOM (they're available globally via CDN).
  • Render your root component using:

    ReactDOM.createRoot(document.getElementById('root')).render(<App />);
    

  • Split components into separate JS files if needed—just add more <script type="text/babel"> tags in your index.html (make sure to load parent components after child components).
• Create a styles.css file and copy all your custom styles into it (skip this if you're using inline styles).
• To run the app, either open index.html directly in your browser, or use a simple static server like npx serve to avoid cross-origin issues with local assets.

• If you used CSS Modules in your Webpack project, CRA supports them out of the box (just name files [name].module.css). For the CDN approach, you'll need to switch to regular CSS classes since CSS Modules require a build step.
• Environment variables: In CRA, prefix variables with REACT_APP_ (e.g., REACT_APP_API_URL) and they'll be available via process.env. For the CDN approach, define variables directly in your JS or attach them to the window object.
• For production, the CDN approach should use the minified production versions of React/ReactDOM and pre-compile your JSX to plain JS (using Babel CLI) to avoid runtime compilation overhead.

内容的提问来源于stack exchange，提问作者Allu Manikyam