In Angular 4 applications, all vendor CSS files are converted into style tags at the beginning of the HTML document

In my Angular 4 project, I have integrated Bootstrap, Fontawesome, and some custom CSS. However, all these styles are rendering as separate tags at the top of my index.html file. I would like them to be combined into a single bundled CSS file for better organization, as shown in the image attached for reference https://i.sstatic.net/WHPUZ.png

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "project": {
    "name": "test"
  },
  "apps": [
    {
      "root": "src",
      "outDir": "dist",
      "assets": [
        "assets",
        "favicon.ico"
      ],
      "index": "index.html",
      "main": "main.ts",
      "polyfills": "polyfills.ts",
      "test": "test.ts",
      "tsconfig": "tsconfig.app.json",
      "testTsconfig": "tsconfig.spec.json",
      "prefix": "app",
      "styles": [
        "styles.css",
      "../node_modules/bootstrap/dist/css/bootstrap.css",
        "../node_modules/font-awesome/css/font-awesome.min.css",
        "../node_modules/primeng/resources/primeng.min.css",
    "../node_modules/primeng/resources/themes/omega/theme.css"
         ],
      "scripts": ["../node_modules/bootstrap/dist/js/bootstrap.min.js"],
      "environmentSource": "environments/environment.ts",
      "environments": {
        "dev": "environments/environment.ts",
        "prod": "environments/environment.prod.ts"
      }
    }
  ],
  "e2e": {
    "protractor": {
      "config": "./protractor.conf.js"
    }
  },
  "lint": [
    {
      "project": "src/tsconfig.app.json",
      "exclude": "**/node_modules/**"
    },
    {
      "project": "src/tsconfig.spec.json",
      "exclude": "**/node_modules/**"
    },
    {
      "project": "e2e/tsconfig.e2e.json",
      "exclude": "**/node_modules/**"
    }
  ],
  "test": {
    "karma": {
      "config": "./karma.conf.js"
    }
  },
  "defaults": {
    "styleExt": "css",
    "component": {}
  }
}

Answer №1

Incorporating css vendors into the style elements is done through the javascript bundle files.

To achieve this, make sure to compile your application using the --extract-css option in order to generate individual .css files.

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