我无法修改create-react-app中的webpack.config来安装react-pdf

Question

帮助我在创建react应用程序时安装react-pdf包（https://github.com/diegomura/react-pdf）。我无法更改 webpack.config。我按照用户 River Twilight 在这里找到的说明来执行此操作：How to update webpack config for a React Project Created using create-react-app?

根据安装react-pdf的说明

1. 我跑npm install process browserify-zlib stream-browserify util buffer assert
2. config-override.js在项目根文件夹中创建
3. 接下来，您需要将以下行插入到配置中：

const webpack = require("webpack");

module.exports = {
  /* ... */

  resolve: {
    fallback: {
      process: require.resolve("process/browser"),
      zlib: require.resolve("browserify-zlib"),
      stream: require.resolve("stream-browserify"),
      util: require.resolve("util"),
      buffer: require.resolve("buffer"),
      asset: require.resolve("assert"),
    }
  },
  plugins: [
    new webpack.ProvidePlugin({
      Buffer: ["buffer", "Buffer"],
      process: "process/browser",
    }),
  ]

  /* ... */
}

但是 a) webstorm 发誓，b) 该项目不是由"start": "react-app-rewired start".

我在不更改配置的情况下遇到的错误：

Compiled with problems:X

ERROR in ./node_modules/@react-pdf/pdfkit/lib/pdfkit.browser.es.js 2:0-28

Module not found: Error: Can't resolve 'stream' in 'C:\Users\schek\Desktop\react\snitch\node_modules\@react-pdf\pdfkit\lib'

BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to:
    - add a fallback 'resolve.fallback: { "stream": require.resolve("stream-browserify") }'
    - install 'stream-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
    resolve.fallback: { "stream": false }


ERROR in ./node_modules/@react-pdf/pdfkit/lib/pdfkit.browser.es.js 4:0-24

Module not found: Error: Can't resolve 'zlib' in 'C:\Users\schek\Desktop\react\snitch\node_modules\@react-pdf\pdfkit\lib'

BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to:
    - add a fallback 'resolve.fallback: { "zlib": require.resolve("browserify-zlib") }'
    - install 'browserify-zlib'
If you don't want to include a polyfill, you can use an empty module like this:
    resolve.fallback: { "zlib": false }


ERROR in ./node_modules/@react-pdf/png-js/lib/png-js.browser.es.js 1:0-24

Module not found: Error: Can't resolve 'zlib' in 'C:\Users\schek\Desktop\react\snitch\node_modules\@react-pdf\png-js\lib'

BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to:
    - add a fallback 'resolve.fallback: { "zlib": require.resolve("browserify-zlib") }'
    - install 'browserify-zlib'
If you don't want to include a polyfill, you can use an empty module like this:
    resolve.fallback: { "zlib": false }


ERROR in ./node_modules/blob-stream/index.js 1:21-47

Module not found: Error: Can't resolve 'stream' in 'C:\Users\schek\Desktop\react\snitch\node_modules\blob-stream'

BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to:
    - add a fallback 'resolve.fallback: { "stream": require.resolve("stream-browserify") }'
    - install 'stream-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
    resolve.fallback: { "stream": false }


ERROR in ./node_modules/restructure/src/EncodeStream.js 23:11-28

Module not found: Error: Can't resolve 'stream' in 'C:\Users\schek\Desktop\react\snitch\node_modules\restructure\src'

BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
This is no longer the case. Verify if you need this module and configure a polyfill for it.

If you want to include a polyfill, you need to:
    - add a fallback 'resolve.fallback: { "stream": require.resolve("stream-browserify") }'
    - install 'stream-browserify'
If you don't want to include a polyfill, you can use an empty module like this:
    resolve.fallback: { "stream": false }

Answer 1

这些错误似乎是由于react-scripts v5而发生的。我在使用react-router v5时花了一天时间找到解决方案。但目前看来最好的方法是保留或恢复到v4.0.3 ，直到 v5 重新添加对节点内置程序的支持#11764合并并发布。

Github 上的这个问题可能会有所帮助。