父类包含子类列表使用class-transformer进行discriminator会启动崩溃

import {Type} from “class-transformer”; 
import “reflect-metadata” 
export class B { 
  constructor() { 
  } 
} 
 
export class A { 
  type:string = ‘b’ 
  @Type(() => A,myDiscriminator()) 
  components?: B[] 
} 
 
export function myDiscriminator(): ESObject { 
  return { 
    keepDiscriminatorProperty: true, 
    discriminator: { property: ‘type’, 
      subTypes: [ 
        { value: B, name: ‘b’ }, 
      ], 
    } 
  } 
}