Angular CLI版本9 (用于创建Angular 9项目)现在从原理图中获取style而不是styleext.使用如下命令:
ng config schematics.@schematics/angular:component.style scss
和生成的 angular.json 看起来应该像这样

Angular CLI version 9 (used to create Angular 9 projects) now picks up style from schematics instead of styleext. Use the command like this:
ng config schematics.@schematics/angular:component.style scss
and the resulting angular.json shall look like this

"schematics": {
   "@schematics/angular:component": {
      "style": "scss"
    }
  }

其他可能的解决方案和说明:

要 使用支持sass的角度CLI创建新项目 ，请尝试以下操作:

Other possible solutions & explanations:

To create a new project with angular CLI with sass support, try this:

ng new My_New_Project --style=scss 

您也可以使用--style=sass&如果您不知道两者之间的区别，请阅读本简短的&简单的文章，如果您仍然不知道，只需使用scss&继续学习.

You can also use --style=sass & if you don't know the difference, read this short & easy article and if you still don't know, just go with scss & keep learning.

如果您有一个Angle 5项目，请使用此命令更新项目的配置.

If you have an angular 5 project, use this command to update the config for your project.

ng set defaults.styleExt scss

最新版本

让Angular 6使用CLI在现有项目上设置新样式:

For Angular 6 to set new style on existing project with CLI:

ng config schematics.@schematics/angular:component.styleext scss

或直接进入angular.json:

Or Directly into angular.json:

"schematics": {
      "@schematics/angular:component": {
      "styleext": "scss"
    }
}