[Typescript-node] Dumping models with subtypes causes stackoverflow

Description

Given a yaml definition that uses discriminators and allOf, I am unable to debug the models to work on templates.

Swagger-codegen version

2.2.3, from homebrew.

Swagger declaration file content or url

swagger: "2.0"
info:
  version: "1.0.0"
  title: Test Swagger Yaml

host: localhost:3001

definitions:
  List:
    required:
      - count
      - previous
      - next
    properties:
      count:
        type: integer
      previous:
        type: string
      next:
        type: string

  Location:
    discriminator: kind
    properties:
      kind:
        type: string
        enum:
        - Gps
        - Address
    required:
    - kind
  Gps:
    allOf:
    - $ref: '#/definitions/Location'
    - properties:
        lat:
          type: number
        lon:
          type: number
      required:
      - lat
      - lon
      example:
        lat: 35.00
        lon: 60.1234
        kind: Gps
  Address:
    allOf:
    - $ref: '#/definitions/Location'
    - properties:
        line1:
          type: string
        line2:
          type: string
        line3:
          type: string
        city:
          type: string
        stateOrProvince:
          type: string
        postalCode:
          type: string
        countryCode:
          type: string
          pattern: ([A-Z])+
          minLength: 3
          maxLength: 3
          description: The three-letter ISO country abbreviation.
      required:
      - line1
      - city
      - stateOrProvince
      - postalCode
      - countryCode
      example:
        line1: 1600 Pennsylvania NW
        city: Washington
        stateOrProvince: DC
        postalCode: 20500
        countryCode: USA

  LocationList:
    allOf:
    - $ref: '#/definitions/List'
    - type: object
      required:
        - results
      properties:
        results:
          type: array
          items:
            $ref : '#/definitions/Location'

paths:
  /locations:
    get:
      operationId: list locations
      description: list all locations
      responses:
        200:
          description: Location List
          schema:
            $ref: '#/definitions/LocationList'

Command line used for generation

java -DdebugModels=true -jar /usr/local/Cellar/swagger-codegen/2.2.3/libexec/swagger-codegen-cli.jar generate -i test.yaml -l typescript-node

Steps to reproduce

save the above spec as test.yaml and run the above command.

Related issues/PRs

None that I could find.

Suggest a fix/enhancement

This doesn't stop normal operation, so template generate works fine. It's just the debug code can't handle this relationship.

Reproduce the failure with test.yaml using the documented swagger-codegen 2.2.3 command and the typescript-node generator with -DdebugModels=true. Trace the debug model-dumping path for the discriminator and allOf relationship; done means model dumping no longer overflows while normal template generation continues to work.