Angular 6许多无法解决错误（加密，fs，http，https，net，路径，流，tls，zlib）

猴子樱2020-06-02

我正在构建Angular 6应用程序，但是每次我要为localhost服务时，都会出现以下错误：

ERROR in ./node_modules/aws-sign2/index.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\aws-sign2'
ERROR in ./node_modules/aws4/aws4.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\aws4'
ERROR in ./node_modules/ecc-jsbn/index.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\ecc-jsbn'
ERROR in ./node_modules/http-signature/lib/signer.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\http-signature\lib'
ERROR in ./node_modules/http-signature/lib/verify.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\http-signature\lib'
ERROR in ./node_modules/oauth-sign/index.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\oauth-sign'
ERROR in ./node_modules/request/lib/oauth.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\request\lib'
ERROR in ./node_modules/request/lib/helpers.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\request\lib'
ERROR in ./node_modules/request/lib/hawk.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\request\lib'
ERROR in ./node_modules/sshpk/lib/signature.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/sshpk/lib/private-key.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/sshpk/lib/certificate.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/sshpk/lib/fingerprint.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/sshpk/lib/key.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/sshpk/lib/dhe.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/sshpk/lib/identity.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/sshpk/lib/utils.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/sshpk/lib/formats/pem.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib\formats'
ERROR in ./node_modules/sshpk/lib/formats/ssh-private.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib\formats'
ERROR in ./node_modules/sshpk/lib/formats/openssh-cert.js
Module not found: Error: Can't resolve 'crypto' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib\formats'
ERROR in ./node_modules/request/lib/har.js
Module not found: Error: Can't resolve 'fs' in 'C:\Users\sorou\projects\tunrWeb\node_modules\request\lib'
ERROR in ./node_modules/forever-agent/index.js
Module not found: Error: Can't resolve 'http' in 'C:\Users\sorou\projects\tunrWeb\node_modules\forever-agent'
ERROR in ./node_modules/http-signature/lib/signer.js
Module not found: Error: Can't resolve 'http' in 'C:\Users\sorou\projects\tunrWeb\node_modules\http-signature\lib'
ERROR in ./node_modules/request/request.js
Module not found: Error: Can't resolve 'http' in 'C:\Users\sorou\projects\tunrWeb\node_modules\request'
ERROR in ./node_modules/tunnel-agent/index.js
Module not found: Error: Can't resolve 'http' in 'C:\Users\sorou\projects\tunrWeb\node_modules\tunnel-agent'
ERROR in ./node_modules/forever-agent/index.js
Module not found: Error: Can't resolve 'https' in 'C:\Users\sorou\projects\tunrWeb\node_modules\forever-agent'
ERROR in ./node_modules/request/request.js
Module not found: Error: Can't resolve 'https' in 'C:\Users\sorou\projects\tunrWeb\node_modules\request'
ERROR in ./node_modules/tunnel-agent/index.js
Module not found: Error: Can't resolve 'https' in 'C:\Users\sorou\projects\tunrWeb\node_modules\tunnel-agent'
ERROR in ./node_modules/forever-agent/index.js
Module not found: Error: Can't resolve 'net' in 'C:\Users\sorou\projects\tunrWeb\node_modules\forever-agent'
ERROR in ./node_modules/tough-cookie/lib/cookie.js
Module not found: Error: Can't resolve 'net' in 'C:\Users\sorou\projects\tunrWeb\node_modules\tough-cookie\lib'
ERROR in ./node_modules/tunnel-agent/index.js
Module not found: Error: Can't resolve 'net' in 'C:\Users\sorou\projects\tunrWeb\node_modules\tunnel-agent'
ERROR in ./node_modules/mime-types/index.js
Module not found: Error: Can't resolve 'path' in 'C:\Users\sorou\projects\tunrWeb\node_modules\mime-types'
ERROR in ./node_modules/assert-plus/assert.js
Module not found: Error: Can't resolve 'stream' in 'C:\Users\sorou\projects\tunrWeb\node_modules\assert-plus'
ERROR in ./node_modules/combined-stream/lib/combined_stream.js
Module not found: Error: Can't resolve 'stream' in 'C:\Users\sorou\projects\tunrWeb\node_modules\combined-stream\lib'
ERROR in ./node_modules/delayed-stream/lib/delayed_stream.js
Module not found: Error: Can't resolve 'stream' in 'C:\Users\sorou\projects\tunrWeb\node_modules\delayed-stream\lib'
ERROR in ./node_modules/isstream/isstream.js
Module not found: Error: Can't resolve 'stream' in 'C:\Users\sorou\projects\tunrWeb\node_modules\isstream'
ERROR in ./node_modules/request/request.js
Module not found: Error: Can't resolve 'stream' in 'C:\Users\sorou\projects\tunrWeb\node_modules\request'
ERROR in ./node_modules/sshpk/lib/ed-compat.js
Module not found: Error: Can't resolve 'stream' in 'C:\Users\sorou\projects\tunrWeb\node_modules\sshpk\lib'
ERROR in ./node_modules/forever-agent/index.js
Module not found: Error: Can't resolve 'tls' in 'C:\Users\sorou\projects\tunrWeb\node_modules\forever-agent'
ERROR in ./node_modules/tunnel-agent/index.js
Module not found: Error: Can't resolve 'tls' in 'C:\Users\sorou\projects\tunrWeb\node_modules\tunnel-agent'
ERROR in ./node_modules/request/request.js
Module not found: Error: Can't resolve 'zlib' in 'C:\Users\sorou\projects\tunrWeb\node_modules\request'

这是我的package.json：

{
  "name": "tunr-web",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^6.0.7",
    "@angular/cdk": "github:angular/cdk-builds",
    "@angular/common": "^6.0.3",
    "@angular/compiler": "^6.0.3",
    "@angular/core": "^6.0.3",
    "@angular/forms": "^6.0.3",
    "@angular/http": "^6.0.3",
    "@angular/material": "github:angular/material2-builds",
    "@angular/platform-browser": "^6.0.3",
    "@angular/platform-browser-dynamic": "^6.0.3",
    "@angular/router": "^6.0.3",
    "angular-svg-round-progressbar": "^2.0.0",
    "angularfire2": "^5.0.0-rc.11",
    "core-js": "^2.5.4",
    "firebase": "^5.1.0",
    "hammerjs": "^2.0.8",
    "jquery": "^3.3.1",
    "ng-scrollreveal": "^2.2.0",
    "ng2-scroll-to-el": "^1.2.1",
    "ngx-facebook": "^2.4.0",
    "ngx-infinite-scroll": "^6.0.1",
    "ngx-sharebuttons": "^4.1.4",
    "rxjs": "^6.2.1",
    "rxjs-compat": "^6.2.1",
    "time-ago-pipe": "^1.3.2",
    "youtube-search": "^1.1.1",
    "zone.js": "^0.8.26"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.6.8",
    "@angular/cli": "~6.0.8",
    "@angular/compiler-cli": "^6.0.3",
    "@angular/language-service": "^6.0.3",
    "@types/jasmine": "~2.8.6",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "@types/scrollreveal": "0.0.3",
    "codelyzer": "~4.2.1",
    "jasmine-core": "~2.99.1",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~1.7.1",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.0",
    "karma-jasmine": "~1.1.1",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.3.0",
    "ts-node": "~5.0.1",
    "tslint": "~5.9.1",
    "typescript": "~2.7.2"
  }
}

有人知道出了什么问题吗？我的node_modules文件中没有上述模块（我可以安装其中一些，但是现在内置了'crypto'）。如何获得这些文件夹？它让我发疯。

古一2020/06/02 09:57:51

我只是作为Angular的新手遇到这个问题，而所有其他所有答案实际上都在为您提供一些不应解决的解决方法（在大多数情况下）。实际上，您需要退后一步，认为您正在执行框架不希望执行的操作。

就我而言，发生的事情是，我添加了对用于访问外部API服务的库的依赖，然后尝试将其导入Angular“服务”中。我仍然对Angular还是陌生的，并且来自C＃WCF背景，因此在我看来，服务是服务器端进程。但是，Angular中没有什么是服务器端的！它是在浏览器中运行的严格的客户端框架。

为我解决此问题的方法是意识到Angular服务需要严格地与自己的后端（而不是外部网站）进行通信，这意味着我需要单独编写自己的API。就我而言，我使用的是MEAN堆栈，因此这意味着创建一个Express.js API，该API将在后端与我与外部API通信。这增加了一些优势，例如能够将会话数据和来自外部API的其他数据缓存到Mongo数据库中，而不是每次都需要一个新的客户端API会话，而这将很快超过该站点允许的每日会话数7500一天，假设我有很多用户。

TL; DR的解决方法是删除任何进口并非用于前端工作NPM包，需要这样的包，比如https，crypto和fs。本fs是一个特殊的红旗。我认为这意味着“文件系统”，您的前端当然不应该直接访问它。

古一王者一打九2020/06/02 09:57:51

当前版本的Angular-cli不会安装某些软件包，例如zlib，而较早的版本会安装。您可能必须手动安装一些软件包才能解决这些错误。

Gil2020/06/02 09:57:51

您必须找到添加为依赖项的节点程序包，这会导致此问题。打开package-lock.json，搜索crypto可以找到依赖关系链，该依赖关系导致package.json的dependencies部分中包含包名称。就我而言，这些库中的大多数都是通过npm软件包“ request”引入的。

Tony凯2020/06/02 09:57:51

您正在使用最新版本的Angular CLI。不再支持某些npm软件包。现在，它是内置的Node模块。如果您依赖加密，则应切换到内置密码。

要解决有关加密，流库的问题，请转到，

node_modules/@angular-devkit/build-angular/src/angular-cli-files/models/webpack-configs/browser.js

文件并进行以下更改，

`node: {crypto: true, stream: true}`

木嘢2020/06/02 09:57:51

使用ngx-build-plus软件包-https: //github.com/manfredsteyer/ngx-build-plus-并提供其他配置。这样，您不必在每次安装时都手动更新节点模块文件。

蓝染大人2020/06/02 09:57:50

这是由依赖项导入浏览器中不可用的节点模块引起的。将出现错误的模块添加到package.json中：

"browser": {
    "http": false,
    "https":false,
    "net": false,
    "path": false,
    "stream": false,
    "tls": false
}

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