我的页面工作正常，但在编译我的反应代码时突然发生了这个错误

Question

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Compiled with problems:

ERROR in ./node_modules/body-parser/lib/read.js 20:11-26

Module not found: Error: Can't resolve 'zlib' in 'D:\BooksGalore app\frontend\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/content-disposition/index.js 19:15-39

Module not found: Error: Can't resolve 'path' in 'D:\BooksGalore app\frontend\node_modules\content-disposition'

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/destroy/index.js 12:17-41

Module not found: Error: Can't resolve 'fs' in 'D:\BooksGalore app\frontend\node_modules\destroy'


ERROR in ./node_modules/etag/index.js 20:12-31

Module not found: Error: Can't resolve 'fs' in 'D:\BooksGalore app\frontend\node_modules\etag'


ERROR in ./node_modules/express/lib/application.js 42:14-37

Module not found: Error: Can't resolve 'path' in 'D:\BooksGalore app\frontend\node_modules\express\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: { "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/express/lib/request.js 18:11-30

Module not found: Error: Can't resolve 'net' in 'D:\BooksGalore app\frontend\node_modules\express\lib'


ERROR in ./node_modules/express/lib/response.js 29:11-26

Module not found: Error: Can't resolve 'path' in 'D:\BooksGalore app\frontend\node_modules\express\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: { "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/express/lib/view.js 16:11-26

Module not found: Error: Can't resolve 'path' in 'D:\BooksGalore app\frontend\node_modules\express\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: { "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/express/lib/view.js 18:9-22

Module not found: Error: Can't resolve 'fs' in 'D:\BooksGalore app\frontend\node_modules\express\lib'


ERROR in ./node_modules/mime-types/index.js 15:14-37

Module not found: Error: Can't resolve 'path' in 'D:\BooksGalore app\frontend\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/mime/mime.js 1:11-26

Module not found: Error: Can't resolve 'path' in 'D:\BooksGalore app\frontend\node_modules\mime'

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/mime/mime.js 3:9-22

Module not found: Error: Can't resolve 'fs' in 'D:\BooksGalore app\frontend\node_modules\mime'


ERROR in ./node_modules/send/index.js 29:9-22

Module not found: Error: Can't resolve 'fs' in 'D:\BooksGalore app\frontend\node_modules\send'


ERROR in ./node_modules/send/index.js 39:11-26

Module not found: Error: Can't resolve 'path' in 'D:\BooksGalore app\frontend\node_modules\send'

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/serve-static/index.js 20:14-37

Module not found: Error: Can't resolve 'path' in 'D:\BooksGalore app\frontend\node_modules\serve-static'

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 }

Answer 1

我遇到这个问题已经有一段时间了，直到我从过去的提交中创建了一个新分支。

后来，经过对代码的大量研究和审查，我意识到我是从“@express”而不是“@angular/router”导入 Router 类。

ts 文件导入中导致上述错误的代码行如下所示；

import { Router } from '@express';

下面的代码是解决方案。

import { Router } from '@angular/router';

注意： Router 类是提供视图之间导航和 URL 操作功能的服务。

Answer 2

我在使用 React 并尝试在屏幕上显示 json 响应时遇到了此错误。由于我使用了“响应”，它会自动从express导入响应（我相信），这导致了错误。我所要做的就是删除组件中的响应导入，然后它就消失了。

Answer 3

删除代码中响应的导入

import { response } from "express";

Answer 4

您的节点模块中缺少 zlib 软件包，请尝试再次安装该软件包或尝试删除节点模块并使用 npm install 安装软件包。

Answer 5

所以事实证明 VS Code 会随机放入这样一个无用的导入：

import { set } from "express/lib/application"

我实际上不知道它为什么这样做。但删除额外的导入可以解决这个问题。该错误非常令人生畏并且难以调试。特别是如果它是随机发生的并且您只是使用标准的反应应用程序。

我建议查看您最近修改过的文件，以查找任何不熟悉的额外导入。删除那些。应该修复它。

Answer 6

我以前遇到过这个问题，只需删除下面的代码行

import { json } from "body-parser";

一切都会好的:)

Answer 7

从代码中删除以下行

import { response } from 'express';