[
  {
    "id": "$arrayElemAt baseline",
    "operator": "$arrayElemAt",
    "kind": "baseline",
    "operand": "all",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        -1
      ]
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": {\"$numberInt\": \"2\"}}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": {\"$numberInt\": \"2\"}}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$arrayElemAt array[0]: null",
    "operator": "$arrayElemAt",
    "kind": "null",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$arrayElemAt array[0]: missing",
    "operator": "$arrayElemAt",
    "kind": "missing",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$arrayElemAt array[0]: zero",
    "operator": "$arrayElemAt",
    "kind": "zero",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is int",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: negative",
    "operator": "$arrayElemAt",
    "kind": "negative",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is int",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: decimal",
    "operator": "$arrayElemAt",
    "kind": "decimal",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is double",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: numeric string",
    "operator": "$arrayElemAt",
    "kind": "numeric string",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is string",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: text",
    "operator": "$arrayElemAt",
    "kind": "text",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is string",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: empty string",
    "operator": "$arrayElemAt",
    "kind": "empty string",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is string",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: boolean",
    "operator": "$arrayElemAt",
    "kind": "boolean",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is bool",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: false",
    "operator": "$arrayElemAt",
    "kind": "false",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is bool",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: typed date",
    "operator": "$arrayElemAt",
    "kind": "typed date",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is date",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: decimal128",
    "operator": "$arrayElemAt",
    "kind": "decimal128",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is decimal",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: empty array",
    "operator": "$arrayElemAt",
    "kind": "empty array",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "mongo": {
      "present": false
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$arrayElemAt array[0]: numeric array",
    "operator": "$arrayElemAt",
    "kind": "numeric array",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "bson": "{\"v\": {\"$numberInt\": \"3\"}}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": {\"$numberInt\": \"3\"}}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$arrayElemAt array[0]: mixed array",
    "operator": "$arrayElemAt",
    "kind": "mixed array",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "bson": "{\"v\": {\"$numberInt\": \"3\"}}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": {\"$numberInt\": \"3\"}}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$arrayElemAt array[0]: nested array",
    "operator": "$arrayElemAt",
    "kind": "nested array",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "bson": "{\"v\": [{\"$numberInt\": \"3\"}]}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": [{\"$numberInt\": \"3\"}]}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$arrayElemAt array[0]: empty object",
    "operator": "$arrayElemAt",
    "kind": "empty object",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is object",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: object",
    "operator": "$arrayElemAt",
    "kind": "object",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is object",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt array[0]: ISO date string",
    "operator": "$arrayElemAt",
    "kind": "ISO date string",
    "operand": "array[0]",
    "expression": {
      "$arrayElemAt": [
        "$probe",
        -1
      ]
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's first argument must be an array, but is string",
      "code": 28689,
      "error": "Location28689"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: null",
    "operator": "$arrayElemAt",
    "kind": "null",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": null
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$arrayElemAt index[1]: missing",
    "operator": "$arrayElemAt",
    "kind": "missing",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "status": "DIFFERENCE"
  },
  {
    "id": "$arrayElemAt index[1]: zero",
    "operator": "$arrayElemAt",
    "kind": "zero",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": 0
    },
    "srotax": {
      "bson": "{\"v\": {\"$numberInt\": \"1\"}}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": {\"$numberInt\": \"1\"}}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$arrayElemAt index[1]: negative",
    "operator": "$arrayElemAt",
    "kind": "negative",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": -2
    },
    "srotax": {
      "bson": "{\"v\": {\"$numberInt\": \"1\"}}",
      "present": true
    },
    "mongo": {
      "bson": "{\"v\": {\"$numberInt\": \"1\"}}",
      "present": true
    },
    "status": "EXACT_MATCH"
  },
  {
    "id": "$arrayElemAt index[1]: decimal",
    "operator": "$arrayElemAt",
    "kind": "decimal",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": 2.5
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "Index must be an int32"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be representable as a 32-bit integer: 2.5",
      "code": 28691,
      "error": "Location28691"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: numeric string",
    "operator": "$arrayElemAt",
    "kind": "numeric string",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": "12"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is string",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: text",
    "operator": "$arrayElemAt",
    "kind": "text",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": "hello"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is string",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: empty string",
    "operator": "$arrayElemAt",
    "kind": "empty string",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": ""
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is string",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: boolean",
    "operator": "$arrayElemAt",
    "kind": "boolean",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": true
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is bool",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: false",
    "operator": "$arrayElemAt",
    "kind": "false",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": false
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is bool",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: typed date",
    "operator": "$arrayElemAt",
    "kind": "typed date",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "$date": "2026-01-15T15:00:00Z"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is date",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: decimal128",
    "operator": "$arrayElemAt",
    "kind": "decimal128",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "$numberDecimal": "1.25"
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "Index must be an int32"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be representable as a 32-bit integer: 1.25",
      "code": 28691,
      "error": "Location28691"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: empty array",
    "operator": "$arrayElemAt",
    "kind": "empty array",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": []
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is array",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: numeric array",
    "operator": "$arrayElemAt",
    "kind": "numeric array",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": [
        1,
        2,
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is array",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: mixed array",
    "operator": "$arrayElemAt",
    "kind": "mixed array",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": [
        1,
        null,
        "x",
        3
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is array",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: nested array",
    "operator": "$arrayElemAt",
    "kind": "nested array",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": [
        [
          1,
          2
        ],
        [
          3
        ]
      ]
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is array",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: empty object",
    "operator": "$arrayElemAt",
    "kind": "empty object",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": {}
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is object",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: object",
    "operator": "$arrayElemAt",
    "kind": "object",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": {
        "x": 1
      }
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is object",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt index[1]: ISO date string",
    "operator": "$arrayElemAt",
    "kind": "ISO date string",
    "operand": "index[1]",
    "expression": {
      "$arrayElemAt": [
        [
          1,
          2
        ],
        "$probe"
      ]
    },
    "input": {
      "probe": "2026-01-15T15:00:00Z"
    },
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt requires a List and an integer index"
    },
    "mongo": {
      "message": "Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $arrayElemAt's second argument must be a numeric value, but is string",
      "code": 28690,
      "error": "Location28690"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt empty arguments",
    "operator": "$arrayElemAt",
    "kind": "empty arguments",
    "operand": "all",
    "expression": {
      "$arrayElemAt": []
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt expects [array, index]"
    },
    "mongo": {
      "message": "Invalid $project :: caused by :: Expression $arrayElemAt takes exactly 2 arguments. 0 were passed in.",
      "code": 16020,
      "error": "Location16020"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "$arrayElemAt unknown option",
    "operator": "$arrayElemAt",
    "kind": "unknown option",
    "operand": "all",
    "expression": {
      "$arrayElemAt": {
        "unexpected": 1
      }
    },
    "input": {},
    "srotax": {
      "error": "IllegalArgumentException",
      "message": "$arrayElemAt expects [array, index]"
    },
    "mongo": {
      "message": "Invalid $project :: caused by :: Expression $arrayElemAt takes exactly 2 arguments. 1 were passed in.",
      "code": 16020,
      "error": "Location16020"
    },
    "status": "BOTH_REJECTED"
  },
  {
    "id": "mongodb-9-boundary-cases.json:0",
    "operator": "$arrayElemAt",
    "kind": "boundary example",
    "operand": "all",
    "expression": {
      "$arrayElemAt": [
        [
          1
        ],
        5
      ]
    },
    "input": {},
    "srotax": {
      "bson": "{\"v\": null}",
      "present": true
    },
    "mongo": {
      "present": false
    },
    "status": "DIFFERENCE"
  }
]