{
  "type": "Program",
  "sourceType": "module",
  "body": [
    {
      "type": "ExpressionStatement",
      "expression": {
        "type": "BinaryExpression",
        "operator": "!==",
        "left": {
          "type": "Identifier",
          "name": "num"
        },
        "right": {
          "type": "UnaryExpression",
          "operator": "-",
          "argument": {
            "type": "Literal",
            "value": 1,
            "raw": "1"
          },
          "prefix": true
        }
      }
    }
  ]
}