{
  "expression": ["object", ["get", "x"], ["literal", {"default": "value"}]],
  "inputs": [
    [{}, {"properties": {"x": {"inner": "object"}}}],
    [{}, {"properties": {"x": 1}}],
    [{}, {"properties": {"x": "1"}}],
    [{}, {"properties": {"x": false}}],
    [{}, {"properties": {"x": null}}]
  ],
  "expected": {
    "compiled": {
      "result": "success",
      "isFeatureConstant": false,
      "isZoomConstant": true,
      "type": "object"
    },
    "outputs": [
      {"inner": "object"},
      {"default": "value"},
      {"default": "value"},
      {"default": "value"},
      {"default": "value"}
    ],
    "serialized": ["object", ["get", "x"], ["literal", {"default": "value"}]]
  }
}