[
  {
    "type": "Literal",
    "value": "Hello, John"
  },
  {
    "type": "BinaryExpression",
    "left": {
      "type": "Identifier",
      "name": "abc"
    },
    "operator": "+",
    "right": {
      "type": "Literal",
      "value": 123
    }
  }
]