https://angular.cn/tutorial/tour-of-heroes
https://angular.cn/tutorial/tour-of-heroes/toh-pt0
ng new angular-tour-of-heroes
cd angular-tour-of-heroes
ng serve --open
查看目录，未生成app.module.ts
网上搜了一下
https://github.com/angular/angular/issues/52751
需要使用如下命令：
ng new angular-tour-of-heroes --no-standalone --routing --ssr=false
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