gistfile1.txt

{
    "type": "ArrowFunctionExpression",
    "id": null,
    "params": [
        {
            "type": "Identifier",
            "name": "n"
        }
    ],
    "defaults": [],
    "body": {
        "type": "BinaryExpression",
        "operator": "==",
        "left": {
            "type": "MemberExpression",
            "computed": false,
            "object": {
                "type": "Identifier",
                "name": "n"
            },
            "property": {
                "type": "Identifier",
                "name": "FirstName"
            }
        },
        "right": {
            "type": "Identifier",
            "name": "localVariable"
        }
    },
    "generator": false,
    "expression": true
}