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Texto mecanografiado ¿Cómo declarar un tipo de subclase?

¿Es posible tener algo así?

 export abstract class FilterBoxElement { abstract getEntities: any; } export interface FilterBoxControlSuggestions extends FilterBoxElement { getEntities: // some implementation with different parameters } export interface FilterBoxControlDropDown extends FilterBoxElement { getEntities: // some implementation with different parameters } export interface FilterBoxDataProps { controlElement: FilterBoxElement // FilterBoxControlSuggestions or FilterBoxControlDropDown }

Quiero que controlElement tenga que ser FilterBoxControlSuggestions o FilterBoxControlDropDown . Pero ahora mismo puedo poner todo en él. ¿Hay una manera de lograr esto?

about 3 years ago · Santiago Trujillo
2 answers
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0

Podrías hacerlo con un tipo de unión:

 export interface FilterBoxDataProps { controlElement: FilterBoxControlSuggestions | FilterBoxControlDropDown }

O con genéricos si desea todas las subclases de FilterBoxElement:

 export interface FilterBoxDataProps<T extends FilterBoxElement> { controlElement: T }
about 3 years ago · Santiago Trujillo Report

0

Si puede ser de un tipo u otro, utilice un tipo de unión ( | ):

 export interface FilterBoxDataProps { controlElement: FilterBoxControlSuggestions | FilterBoxControlDropDown; }
about 3 years ago · Santiago Trujillo Report
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