在子模塊中使用相同的管道組件聲明問題

我想在父模塊中聲明管道並在子模塊中使用它。在子模塊中使用相同的管道組件聲明問題

@NgModule({ 
    // Pipe which I want to declare in all child modules 
    declarations: [ ThisIsPipe ], 
    imports: [ ChildModuleOne, ChildModuleTwo], 
})

如何使用它的子模塊？

因爲如果我聲明它兩次我有錯誤

Uncaught Error: Type ThisIsPipe is part of the declarations of 2 modules: ChildModuleOne and ChildModuleTwo! Please consider moving ThisIsPipe to a higher module that imports ChildModuleOne and ChildModuleTwo. You can also create a new NgModule that exports and includes ThisIsPipe then imports that NgModule in ChildModuleOne and ChildModuleTwo.

來源

2016-09-29 Max Karpovets