找不到模块：错误：无法解析

时间：2019-07-23 10:17:38

标签： javascript angular

好的，我将Angular从6升级到了8。但是我仍然出错。

我在互联网上发现了一个可以为许多用户提供帮助的解决方案。但是在这种情况下，它对我没有帮助。

所以我的package.json文件看起来像这样：

{
  "name": "vital10-frontend",
  "version": "0.55.0",
  "license": "Unlicensed",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "hmr": "ng serve --configuration hmr",
    "build": "ng build",
    "build:prod": "npm run sass:prod && npm run vit10prod",
    "build:acc": "npm run sass:prod && npm run vit10acc",
    "build:test": "npm run sass:prod && npm run vit10test",
    "build:dev": "npm run sass:prod && npm run vit10dev",
    "test": "ng test",
    "test:cover": "ng test --code-coverage",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "local": "ng serve -c local",
    "analyze-bundle": "webpack-bundle-analyzer dist/stats.json",
    "postinstall": "node patch-webpack.js",
    "sass:watch": "sass --watch sass:src\\assets",
    "sass:prod": "sass --update -f --style compressed --sourcemap=none sass:src\\assets",
    "vit10dev": "ng build --prod -c vit10dev",
    "vit10test": "ng build --prod -c vit10test",
    "vit10acc": "ng build --prod -c vit10acc",
    "vit10prod": "ng build --prod -c production"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^8.1.2",
    "@angular/cdk": "^7.3.7",
    "@angular/common": "^8.1.2",
    "@angular/compiler": "^8.1.2",
    "@angular/core": "^8.1.2",
    "@angular/forms": "^8.1.2",
    "@angular/http": "^7.2.15",
    "@angular/platform-browser": "^8.1.2",
    "@angular/platform-browser-dynamic": "^8.1.2",
    "@angular/platform-server": "^8.1.2",
    "@angular/router": "^8.1.2",
    "@types/chart.js": "^2.7.54",
    "buffer": "^5.2.1",
    "chart.js": "^2.7.2",
    "core-js": "^2.5.7",
    "events": "^3.0.0",
    "fs": "0.0.1-security",
    "jasmine": "^3.1.0",
    "ng2-charts": "^1.6.0",
    "ng2-dragula": "^2.1.1",
    "ng2-pdf-viewer": "^5.0.1",
    "node-sass": "^4.11.0",
    "oidc-client": "^1.5.1",
    "path": "^0.12.7",
    "pdfjs-dist": "^2.0.489",
    "rxjs": "^6.5.2",
    "rxjs-compat": "^6.5.2",
    "stream": "0.0.2",
    "timers": "^0.1.1",
    "web-animations-js": "^2.3.1",
    "zone.js": "^0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.801.2",
    "@angular/cli": "^8.1.2",
    "@angular/compiler-cli": "^8.1.2",
    "@angular/language-service": "^8.1.2",
    "@angularclass/hmr": "^2.1.3",
    "@compodoc/compodoc": "^1.1.10",
    "@types/jasmine": "^3.3.14",
    "@types/node": "^12.6.8",
    "chai": "^4.1.2",
    "codelyzer": "^5.1.0",
    "convert-csv-to-json": "0.0.13",
    "cucumber": "^4.2.1",
    "cucumber-html-reporter": "^5.0.0",
    "cucumber-junit": "^1.7.1",
    "express-static": "^1.2.5",
    "jasmine-core": "^3.4.0",
    "jasmine-reporters": "^2.3.1",
    "jasmine-spec-reporter": "^4.2.1",
    "karma": "^4.2.0",
    "karma-chrome-launcher": "^3.0.0",
    "karma-cli": "^2.0.0",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-html-reporter": "^0.2.7",
    "karma-jasmine": "^2.0.1",
    "karma-jasmine-html-reporter": "^1.4.2",
    "karma-junit-reporter": "^1.2.0",
    "karma-teamcity-reporter": "^1.1.0",
    "moment": "^2.22.1",
    "prettier": "1.13.4",
    "protractor": "^5.4.2",
    "protractor-beautiful-reporter": "^1.2.1",
    "protractor-cucumber-framework": "^5.0.0",
    "puppeteer": "^1.14.0",
    "request": "^2.87.0",
    "request-promise-native": "^1.0.5",
    "ts-node": "^3.3.0",
    "tslint": "^5.18.0",
    "tslint-angular": "^1.1.2",
    "typescript": "3.4.5",
    "webpack-bundle-analyzer": "^3.3.2",
    "xlsx": "^0.12.13"
  },
  "browser": {
    "fs": false,
    "path": false,
    "os": false,
    "crypto": false,
    "stream": false,
    "http": false,
    "tls": false,
    "zlib": false,
    "https": false,
    "net": false
  }
}

我的b tsconfig.json文件如下所示：

{
  "compileOnSave": false,
  "compilerOptions": {
    "outDir": "./dist/out-tsc",
    "baseUrl": "src",
    "sourceMap": true,
    "declaration": false,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "target": "es5",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2016",
      "dom"
    ]
  },
   "angularCompilerOptions": {
     "enableIvy": false
   }
}

但是我仍然遇到这些错误：

ERROR in ./node_modules/resolve/lib/async.js
Module not found: Error: Can't resolve 'fs' in 'C:\Source\nien\vital10-frontend\node_modules\resolve\lib'
ERROR in ./node_modules/resolve/lib/sync.js
Module not found: Error: Can't resolve 'fs' in 'C:\Source\nien\vital10-frontend\node_modules\resolve\lib'
ERROR in ./node_modules/resolve/lib/node-modules-paths.js
Module not found: Error: Can't resolve 'fs' in 'C:\Source\nien\vital10-frontend\node_modules\resolve\lib'
ERROR in ./node_modules/tslint/lib/utils.js
Module not found: Error: Can't resolve 'fs' in 'C:\Source\nien\vital10-frontend\node_modules\tslint\lib'

我找到了一个可能的解决方案，您必须在一些node_modules中进行一些配置。但是我认为这不是一个好的解决方案。因为如果您删除所有导入，然后再次安装这些导入，则您的配置将陷入困境。

谢谢

好的，我删除了

 "fs": "0.0.1-security",

我删除了所有包（node_modules）并进行了npm安装。

但是现在我明白了：

(node:13880) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGINT listeners added. Use emitter.setMaxListeners() to increase limit
Binary found at C:\Source\nien\vital10-frontend\node_modules\node-sass\vendor\win32-x64-64\binding.node
Testing binary
Binary is fine

> vital10-frontend@0.55.0 postinstall C:\Source\nien\vital10-frontend
> node patch-webpack.js

internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'C:\Source\nien\vital10-frontend\patch-webpack.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Function.Module.runMain (internal/modules/cjs/loader.js:829:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! vital10-frontend@0.55.0 postinstall: `node patch-webpack.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the vital10-frontend@0.55.0 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\nien\AppData\Roaming\npm-cache\_logs\2019-07-23T10_25_46_184Z-debug.log
PS C:\Source\nien\vital10-frontend>

和我的package.json文件现在看起来像这样：

{
  "name": "vital10-frontend",
  "version": "0.55.0",
  "license": "Unlicensed",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "hmr": "ng serve --configuration hmr",
    "build": "ng build",
    "build:prod": "npm run sass:prod && npm run vit10prod",
    "build:acc": "npm run sass:prod && npm run vit10acc",
    "build:test": "npm run sass:prod && npm run vit10test",
    "build:dev": "npm run sass:prod && npm run vit10dev",
    "test": "ng test",
    "test:cover": "ng test --code-coverage",
    "lint": "ng lint",
    "e2e": "ng e2e",
    "local": "ng serve -c local",
    "analyze-bundle": "webpack-bundle-analyzer dist/stats.json",
    "postinstall": "node patch-webpack.js",
    "sass:watch": "sass --watch sass:src\\assets",
    "sass:prod": "sass --update -f --style compressed --sourcemap=none sass:src\\assets",
    "vit10dev": "ng build --prod -c vit10dev",
    "vit10test": "ng build --prod -c vit10test",
    "vit10acc": "ng build --prod -c vit10acc",
    "vit10prod": "ng build --prod -c production"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^8.1.2",
    "@angular/cdk": "^7.3.7",
    "@angular/common": "^8.1.2",
    "@angular/compiler": "^8.1.2",
    "@angular/core": "^8.1.2",
    "@angular/forms": "^8.1.2",
    "@angular/http": "^7.2.15",
    "@angular/platform-browser": "^8.1.2",
    "@angular/platform-browser-dynamic": "^8.1.2",
    "@angular/platform-server": "^8.1.2",
    "@angular/router": "^8.1.2",
    "@types/chart.js": "^2.7.54",
    "buffer": "^5.2.1",
    "chart.js": "^2.7.2",
    "core-js": "^2.5.7",
    "events": "^3.0.0",
    "jasmine": "^3.1.0",
    "ng2-charts": "^1.6.0",
    "ng2-dragula": "^2.1.1",
    "ng2-pdf-viewer": "^5.0.1",
    "node-sass": "^4.11.0",
    "oidc-client": "^1.5.1",
    "path": "^0.12.7",
    "pdfjs-dist": "^2.0.489",
    "rxjs": "^6.5.2",
    "rxjs-compat": "^6.5.2",
    "stream": "0.0.2",
    "timers": "^0.1.1",
    "web-animations-js": "^2.3.1",
    "zone.js": "^0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.801.2",
    "@angular/cli": "^8.1.2",
    "@angular/compiler-cli": "^8.1.2",
    "@angular/language-service": "^8.1.2",
    "@angularclass/hmr": "^2.1.3",
    "@compodoc/compodoc": "^1.1.10",
    "@types/jasmine": "^3.3.14",
    "@types/node": "^12.6.8",
    "chai": "^4.1.2",
    "codelyzer": "^5.1.0",
    "convert-csv-to-json": "0.0.13",
    "cucumber": "^4.2.1",
    "cucumber-html-reporter": "^5.0.0",
    "cucumber-junit": "^1.7.1",
    "express-static": "^1.2.5",
    "jasmine-core": "^3.4.0",
    "jasmine-reporters": "^2.3.1",
    "jasmine-spec-reporter": "^4.2.1",
    "karma": "^4.2.0",
    "karma-chrome-launcher": "^3.0.0",
    "karma-cli": "^2.0.0",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-html-reporter": "^0.2.7",
    "karma-jasmine": "^2.0.1",
    "karma-jasmine-html-reporter": "^1.4.2",
    "karma-junit-reporter": "^1.2.0",
    "karma-teamcity-reporter": "^1.1.0",
    "moment": "^2.22.1",
    "prettier": "1.13.4",
    "protractor": "^5.4.2",
    "protractor-beautiful-reporter": "^1.2.1",
    "protractor-cucumber-framework": "^5.0.0",
    "puppeteer": "^1.14.0",
    "request": "^2.87.0",
    "request-promise-native": "^1.0.5",
    "ts-node": "^3.3.0",
    "tslint": "^5.18.0",
    "tslint-angular": "^1.1.2",
    "typescript": "3.4.5",
    "webpack-bundle-analyzer": "^3.3.2",
    "xlsx": "^0.12.13"
  },
  "browser": {
    "fs": false,
    "path": false,
    "os": false,
    "crypto": false,
    "stream": false,
    "http": false,
    "tls": false,
    "zlib": false,
    "https": false,
    "net": false
  }
}

仍然得到这个错误：

(node:15956) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 SIGINT listeners added. Use emitter.setMaxListeners() to increase limit
internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'C:\Source\nien\vital10-frontend\patch-webpack.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Function.Module.runMain (internal/modules/cjs/loader.js:829:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! vital10-frontend@0.55.0 postinstall: `node patch-webpack.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the vital10-frontend@0.55.0 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\nien\AppData\Roaming\npm-cache\_logs\2019-07-23T10_59_04_891Z-debug.log
PS C:\Source\nien\vital10-frontend>

我仍然得到这三个错误：

ERROR in ./node_modules/resolve/lib/async.js
Module not found: Error: Can't resolve 'fs' in 'C:\Source\nien\vital10-frontend\node_modules\resolve\lib'
ERROR in ./node_modules/resolve/lib/sync.js
Module not found: Error: Can't resolve 'fs' in 'C:\Source\nien\vital10-frontend\node_modules\resolve\lib'
ERROR in ./node_modules/tslint/lib/utils.js
Module not found: Error: Can't resolve 'fs' in 'C:\Source\nien\vital10-frontend\node_modules\tslint\lib'
i ｢wdm｣: Failed to compile.

8 个答案:

答案 0 :(得分：25)

该错误是由于angular-cli不支持节点中的模块，例如“ fs”和“ path”。 （issue）

将以下内容添加到“ packages.json”文件中。

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

我希望这对某人有帮助。

谢谢。

答案 1 :(得分：19)

对我来说，解决方案是将其添加到 webpack 配置中：

config.node = {
  fs: 'empty',
}

如果你使用 NuxtJS 的另一种解决方案：

// Build Configuration: https://go.nuxtjs.dev/config-build
build: {
    extend(config, {}) {
        config.node = {
            fs: 'empty'
        }
    }
},

如果您使用 NextJS（未测试，请在评论中确认它有效）：

webpack: (config, { buildId, dev, isServer, defaultLoaders, webpack }) => {
  config.node = {
    fs: 'empty'
  }
  return config
},

在其他情况下，请参阅 Anjana Silva 的帖子。编辑您的 package.json 文件即可完成这项工作！

答案 2 :(得分：11)

对于Webpack > 5
更新webpack.config.js

module.exports = {
    ...
    resolve: {
        fallback: {
            "fs": false
        },
    }
}

Can't resolve 'fs' when bundle with webpack #447

答案 3 :(得分：4)

只需将{node：'empty'}添加到您的webpack.config文件中

答案 4 :(得分：2)

我遇到了同样的错误，但这是由于我的错误，因为我使用 axios 进行网络请求，但是在我的应用程序中的某个点我输入了重定向并按了 Enter 并且我的代码完成导入了 'import {重定向}来自“next/dist/next-server/server/api-utils”；' 删除这一行让我可以继续“下一个构建”。

请参阅此链接以供参考：https://github.com/vercel/next.js/issues/9768

答案 5 :(得分：1)

我正在使用 Nuxt.JS 对我有用的是使用@thisismyname 解决方案，并将其添加到 nuxt.config.js，如下所示：

// Build Configuration: https://go.nuxtjs.dev/config-build
build: {
    extend(config, {}) {
        config.node = {
            fs: 'empty'
        }
    }
},

答案 6 :(得分：0)

您可以尝试这些步骤吗？

  1. 删除node_modules
  2. 删除package-lock.json
  3. 从package.json中删除“ fs”：“ 0.0.1-security”
  4. npm install --save

答案 7 :(得分：0)

tl;博士

对于转译 Node.js 的人：将 target: node 添加到 webpack.config.js 文件中。

说明

我知道这是一个 Angular 问题，但是那些为 Node.js 转译的人必须记住，默认情况下，Webpack 为浏览器目标转译，您没有仅由 Node.js 提供的模块。如果您将运行转译代码的环境确实是 Node.js，那么只需在配置文件中用 target: node 标记它。

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