你需要React => v17 React脚本=> v5 webpack => v5

解决问题

1)安装

"fs": "^2.0.0",  // npm i fs
"assert": "^2.0.0",  // npm i assert
"https-browserify": "^1.0.0", // npm i https-browserify
"os": "^0.1.2", // npm i os
"os-browserify": "^0.3.0", // npm i os-browserify
"react-app-rewired": "^2.1.9", //npm i react-app-rewired
"stream-browserify": "^3.0.0", // stream-browserify
"stream-http": "^3.2.0", //stream-http

2)在根目录下创建config-override .js 图像

3)在config-override .js中添加配置

const webpack = require('webpack');
module.exports = function override(config, env) {
    config.resolve.fallback = {
        url: require.resolve('url'),
        fs: require.resolve('fs'),
        assert: require.resolve('assert'),
        crypto: require.resolve('crypto-browserify'),
        http: require.resolve('stream-http'),
        https: require.resolve('https-browserify'),
        os: require.resolve('os-browserify/browser'),
        buffer: require.resolve('buffer'),
        stream: require.resolve('stream-browserify'),
    };
    config.plugins.push(
        new webpack.ProvidePlugin({
            process: 'process/browser',
            Buffer: ['buffer', 'Buffer'],
        }),
    );

    return config;
}

3)更改packages.json

"scripts": {
  "start": "react-app-rewired start",
  "build": "react-app-rewired build",
  "test": "react-app-rewired test",
  "eject": "react-app-rewired eject"
}

问题解决了:)

方法1

开放项目/ node_modules react-scripts / config / webpack.config.js 在回退中添加"crypto": require.resolve("crypto-browserify")

resolve: {
   fallback: {
       "crypto": require.resolve("crypto-browserify")
   }
} 

安装npm i crypto-browserify 重新启动应用程序。

如果你提交，上面的方法是无效的，因为我们不是node_modules

方法2

安装补丁包:纱线添加补丁包 安装所需的填料。(做一个应用程序的初始构建，它会告诉你。) 修改node_modules / react-scripts / config / webpack.config.js。举个例子。这是从Webpack的文档中截取的。

module.exports = {
  //...
  resolve: {
    fallback: {
      assert: require.resolve('assert'),
      buffer: require.resolve('buffer'),
      console: require.resolve('console-browserify'),
      constants: require.resolve('constants-browserify'),
      crypto: require.resolve('crypto-browserify'),
      domain: require.resolve('domain-browser'),
      events: require.resolve('events'),
      http: require.resolve('stream-http'),
      https: require.resolve('https-browserify'),
      os: require.resolve('os-browserify/browser'),
      path: require.resolve('path-browserify'),
      punycode: require.resolve('punycode'),
      process: require.resolve('process/browser'),
      querystring: require.resolve('querystring-es3'),
      stream: require.resolve('stream-browserify'),
      string_decoder: require.resolve('string_decoder'),
      sys: require.resolve('util'),
      timers: require.resolve('timers-browserify'),
      tty: require.resolve('tty-browserify'),
      url: require.resolve('url'),
      util: require.resolve('util'),
      vm: require.resolve('vm-browserify'),
      zlib: require.resolve('browserify-zlib'),
    },
  },
};

不要添加所有的，只添加你需要的。

在修改webpack之前，请确保先安装这些包 配置。

运行yarn patch-package react-scripts。这将生成一个补丁(这应该在你的回购中提交)。 向包中添加postinstall脚本。Json: "postinstall": "yarn patch-package"。现在，任何时候，有人在这个项目上安装npm deps，都会自动应用你在步骤3中创建的补丁。

  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject",
    "postinstall": "yarn patch-package"
  },

你想用在

const nodeExternals = require('webpack-node-externals');

在webpack.config.js中添加

target: "node",
devtool: "source-map",
externals: [nodeExternals()],

所有其他答案都遗漏了一个重要的部分:如何不填充节点核心模块。 如果错误来自你的依赖项的依赖项中的某个模块，而你实际上并不需要，你可以完全忽略它。 在这种情况下，最简单的解决方法是添加到包中。Json这些行:

"browser": {
  "fs": false,
  "path": false,
  "os": false
}

如果需要忽略其他核心节点模块，也可以这样做。

这种方法适用于默认情况下实际webpack配置不能直接访问的框架(比如Angular)。

在寻找不同的错误时，我已经找到了这个解决方案。

当我重新安装节点模块时，我的webpack当前版本是5.38.1，我已经修复了这个问题 安装后，你必须更新你的webpack.config.js resolve{} with 回退:{"fs": false， "path": require.resolve("path-browserify")}而不使用"fs": false它显示错误，即:模块未找到:错误:无法解析'fs'在'/YOUR DIRECTORY…' 所以别忘了加上它;与其他东西看起来像:

module.exports = {
   ...
   resolve: {
    extensions: [".js", ".jsx", ".json", ".ts", ".tsx"],// other stuff
    fallback: {
      "fs": false,
      "path": require.resolve("path-browserify")
    }
  },
};

如果你的webpack.config.js文件中存在node属性，删除它

Compiled with problems:X

ERROR in ./node_modules/body-parser/lib/read.js 24:11-26

Module not found: Error: Can't resolve 'zlib' in 'E:\My Documents\work\web\mbamasala\node_modules\body-parser\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/body-parser/lib/types/urlencoded.js 217:12-34

Module not found: Error: Can't resolve 'querystring' in 'E:\My Documents\work\web\mbamasala\node_modules\body-parser\lib\types'

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: { "querystring": require.resolve("querystring-es3") }'
    - install 'querystring-es3'
If you don't want to include a polyfill, you can use an empty module like this:
    resolve.fallback: { "querystring": false }


ERROR in ./node_modules/destroy/index.js 15:17-41

Module not found: Error: Can't resolve 'fs' in 'E:\My Documents\work\web\mbamasala\node_modules\destroy'


ERROR in ./node_modules/destroy/index.js 17:13-30

Module not found: Error: Can't resolve 'stream' in 'E:\My Documents\work\web\mbamasala\node_modules\destroy'

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/destroy/index.js 19:11-26

Module not found: Error: Can't resolve 'zlib' in 'E:\My Documents\work\web\mbamasala\node_modules\destroy'

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/mime-types/index.js 15:14-37

Module not found: Error: Can't resolve 'path' in 'E:\My Documents\work\web\mbamasala\node_modules\mime-types'

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


ERROR in ./node_modules/safer-buffer/safer.js 4:13-30

Module not found: Error: Can't resolve 'buffer' in 'E:\My Documents\work\web\mbamasala\node_modules\safer-buffer'

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


ERROR in ./node_modules/string_decoder/node_modules/safe-buffer/index.js 4:13-30

Module not found: Error: Can't resolve 'buffer' in 'E:\My Documents\work\web\mbamasala\node_modules\string_decoder\node_modules\safe-buffer'

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

我试了很多办法，但都没有解决。 在手动搜索后，我得到了一行代码，它自动插入到我的vs code中 从body-parser导入{json} 我移开了，节省了时间。 我希望它能帮助到一些人。 谢谢。