Fail on root with references

[atomsfat]

Given

definitions:
  ABC:
    required:
      - name
    properties:
      name:
        type: string
    type: object
  CDE:
    properties:
      id:
        type: integer
      someLMB:
          $ref: '#/definitions/LMN'
    type: object
  IJK:
    required:
      - id
    properties:
      id:
        type: string
    type: object
  LMN:
    required:
      - code
    properties:
      id:
        type: string
        description: Describes a bussiness code of the error.
      description:
        type: string
      someIJK:
        $ref: '#/definitions/IJK'
      someABC:
        $ref: '#/definitions/ABC'
    type: object

cat sample.yaml | fake-schema -y -r ABC

"stack": "SyntaxError: Error resolving $ref pointer "/#/definitions/ABC".