ast.json

{
    "type": "Program",
    "body": [
        {
            "type": "FunctionDeclaration",
            "id": {
                "type": "Identifier",
                "name": "dd"
            },
            "params": [],
            "body": {
                "type": "BlockStatement",
                "body": [
                    {
                        "type": "ExpressionStatement",
                        "expression": {
                            "type": "AssignmentExpression",
                            "operator": "=",
                            "left": {
                                "type": "MemberExpression",
                                "computed": false,
                                "object": {
                                    "type": "ThisExpression"
                                },
                                "property": {
                                    "type": "Identifier",
                                    "name": "target"
                                }
                            },
                            "right": {
                                "type": "Literal",
                                "value": 0,
                                "raw": "0"
                            }
                        }
                    }
                ]
            },
            "generator": false,
            "expression": false
        }
    ],
    "sourceType": "script"
}