10 rules skipped due to selector errors

首先，使用 issue 中列出的 Ionic、Angular CLI、Node.js 和 Windows 版本复现 ionic build --prod。跟踪十个 :host-context 选择器错误的输出位置，并确定 build 预期是处理还是跳过这些错误；完成的要求是针对被跳过的规则达成一致的解决方案，并验证 production build 成功。

ionic build --prod

Generating index html...10 rules skipped due to selector errors:
  :host-context([dir=rtl]) .ion-float-start -> unmatched pseudo-class :host-context   
  :host-context([dir=rtl]) .ion-float-end -> unmatched pseudo-class :host-context     
  :host-context([dir=rtl]) .ion-float-sm-start -> unmatched pseudo-class :host-context
  :host-context([dir=rtl]) .ion-float-sm-end -> unmatched pseudo-class :host-context  
  :host-context([dir=rtl]) .ion-float-md-start -> unmatched pseudo-class :host-context
  :host-context([dir=rtl]) .ion-float-md-end -> unmatched pseudo-class :host-context  
  :host-context([dir=rtl]) .ion-float-lg-start -> unmatched pseudo-class :host-context
  :host-context([dir=rtl]) .ion-float-lg-end -> unmatched pseudo-class :host-context
  :host-context([dir=rtl]) .ion-float-xl-start -> unmatched pseudo-class :host-context
  :host-context([dir=rtl]) .ion-float-xl-end -> unmatched pseudo-class :host-context
✔ Index html generation complete.

ionic info

Ionic:

   Ionic CLI                     : 6.16.3 (C:\Users\Sampath\AppData\Roaming\npm\node_modules\@ionic\cli)
   Ionic Framework               : @ionic/angular 5.6.13
   @angular-devkit/build-angular : 12.1.4
   @angular-devkit/schematics    : 12.1.4
   @angular/cli                  : 12.1.4
   @ionic/angular-toolkit        : 4.0.0

Capacitor:

   Capacitor CLI      : 3.1.2
   @capacitor/android : 3.1.2
   @capacitor/core    : 3.2.0
   @capacitor/ios     : 3.2.0

Utility:

   cordova-res : 0.15.3
   native-run  : 1.4.0

System:

   NodeJS : v14.16.1 (C:\Program Files\nodejs\node.exe)
   npm    : 6.14.12
   OS     : Windows 10