MapLibreParticleLab/metrics/integration/expression-tests/parse/non-array/test.json

{
  "expression": ["+", ["-", 0, {}], 10],
  "expected": {
    "compiled": {
      "result": "error",
      "errors": [
        {
          "key": "[1][2]",
          "error": "Bare objects invalid. Use [\"literal\", {...}] instead."
        }
      ]
    }
  }
}