{
  "type": "Program",
  "sourceType": "module",
  "body": [
    {
      "type": "VariableDeclaration",
      "declarations": [
        {
          "type": "VariableDeclarator",
          "id": {
            "type": "Identifier",
            "name": "num"
          },
          "init": {
            "type": "UnaryExpression",
            "operator": "-",
            "argument": {
              "type": "NumericLiteral",
              "value": 123,
              "raw": "123"
            },
            "prefix": true
          }
        }
      ],
      "kind": "const"
    }
  ]
}