MapLibreParticleLab/metrics/integration/expression-tests/parse/empty/test.json

{
  "expression": [],
  "expected": {
    "compiled": {
      "result": "error",
      "errors": [
        {
          "key": "",
          "error": "Expected an array with at least one element. If you wanted a literal array, use [\"literal\", []]."
        }
      ]
    }
  }
}