角度2+过滤3个布尔值

Question

id like to make a filter for this object

    export interface Components {
    verbal: boolean;
    somatic: boolean;
    material: boolean;
    materialMaterial: string;
    materialCost?: number;
}

id like to have 3 outputs true, false and any or null for example: verbal: true; somatic: false; material: null; will show all objects that have a verbal element do not have a somatic element and both material and not material elements. the only way I can think of doing this is to change the type. id like to know if this can be done without changing the type

Answer 1

These kind of case where enum is useful.

You could create an enum like

enum ComponentValue{
  Allow=1,
  Ignore,
  DontCare
} 

And in your interface

export interface Components {
verbal: ComponentValue;
somatic: ComponentValue;
material: ComponentValue;
materialMaterial: string;
materialCost?: number;

}