On my Swagger Doc for a class, I'm trying to see a JSON schema output for my class.

My class, however, makes use of 2 "types"

export class PushNotification {
  name: string;   
  dir?: NotificationDirection;
  vibrate?: VibratePattern;
}

...

type NotificationDirection = 'auto' | 'ltr' | 'rtl';
type VibratePattern = number | number[];

On Swagger, on the schema, the key:value for "name" shows just fine, but the value appears blank for these other two variables.

How can I go about serializing these? I've been using class-transformer but I don't know if it works with "type"?