[
  {"background": null},
  {"background": false},
  {"background": 100},
  {"width": null},
  {"width": true},
  {"width": "foo"},
  {"width": {}},
  {"height": null},
  {"height": true},
  {"height": "foo"},
  {"height": {}},
  {"$schema": null},
  {"$schema": false},
  {"$schema": 100},
  {"$schema": {}},
  {"description": null},
  {"description": false},
  {"description": 100}
]