{
  "propertySpec": {
    "type": "number",
    "property-type": "data-driven",
    "expression": {"parameters": ["zoom", "feature"]}
  },
  "expression": ["interpolate", ["linear"], ["get", "x"], 0, 100, 10, 200],
  "inputs": [
    [{}, {"properties": {"x": 0}}],
    [{}, {"properties": {"x": 5}}],
    [{}, {"properties": {"x": 10}}],
    [{}, {"properties": {"x": -1234}}],
    [{}, {"properties": {"x": 1234}}],
    [{}, {"properties": {"x": "abcd"}}]
  ],
  "expected": {
    "compiled": {
      "result": "success",
      "isFeatureConstant": false,
      "isZoomConstant": true,
      "type": "number"
    },
    "outputs": [
      100,
      150,
      200,
      100,
      200,
      {
        "error": "Expected value to be of type number, but found string instead."
      }
    ],
    "serialized": [
      "interpolate",
      ["linear"],
      ["number", ["get", "x"]],
      0,
      100,
      10,
      200
    ]
  }
}