angular - 模块构建失败时出现错误(来自 ./node_modules/@angular-devkit/build-angular/node_modules/mini-css-extract-plugin/dist/loader.js)

Question

当我运行 ng build --prod 时出现此错误。它可以正常运行，但无法构建。我中继与此相关

ERROR in Module build failed (from ./node_modules/@angular-devkit/build-angular/node_modules/mini-css-extract-plugin/dist/loader.js):       
TypeError: Cannot read property 'replace' of undefined
    at normalizeBackSlashDirection (C:\project\tea supply chain mangement system\test2\node_modules\webpack\lib\RequestShortener.js:16:17)  
    at new RequestShortener (C:\project\tea supply chain mangement system\test2\node_modules\webpack\lib\RequestShortener.js:26:15)
    at new Compiler (C:\project\tea supply chain mangement system\test2\node_modules\webpack\lib\Compiler.js:195:27)
    at Compiler.createChildCompiler (C:\project\tea supply chain mangement system\test2\node_modules\webpack\lib\Compiler.js:548:25)        
    at Compilation.createChildCompiler (C:\project\tea supply chain mangement system\test2\node_modules\webpack\lib\Compilation.js:2100:24) 
    at Object.pitch (C:\project\tea supply chain mangement system\test2\node_modules\@angular-devkit\build-angular\node_modules\mini-css-extract-plugin\dist\loader.js:89:43)

我的依赖项:

"dependencies": {
  "@agm/core": "^1.1.0",
    "@angular/animations": "8.2.14",
    "@angular/cdk": "^8.2.3",
    "@angular/common": "8.2.14",
    "@angular/compiler": "8.2.14",
    "@angular/core": "^8.2.14",
    "@angular/http": "^7.2.15",
    "@angular/material": "^8.2.3",
    "@angular/router": "8.2.14",
       ....
    "web3": "^1.2.4",
    "zone.js": "0.9.1"   
},   
   "devDependencies": {  
   "@angular-builders/custom-webpack": "^8.4.1",
    "@angular-builders/dev-server": "^7.3.1",
    "@angular-devkit/build-angular": "^0.803.21",
    "@angular-devkit/architect": "^0.803.21",
    "@angular/cli": "^8.3.21",
    "@angular/compiler-cli": "^8.2.14",
    "@angular/language-service": "8.2.14",
    .....
  }

如何解决这个错误？

Answer 1

https://github.com/webpack-contrib/mini-css-extract-plugin/issues/186 的讨论包括一条声明，当任何组件具有数组值长度大于 1 的 styleUrls 属性时，就会发生此错误。

我在一个应用程序中验证了这一点，将该属性的值减少到长度为 1 的数组使错误消失。