{
  "type": "File",
  "start":0,"end":27,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":27}},
  "errors": [
    "SyntaxError: Invalid parenthesized assignment pattern. (1:5)"
  ],
  "program": {
    "type": "Program",
    "start":0,"end":27,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":27}},
    "sourceType": "script",
    "interpreter": null,
    "body": [
      {
        "type": "ExpressionStatement",
        "start":0,"end":27,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":27}},
        "expression": {
          "type": "ArrowFunctionExpression",
          "start":0,"end":27,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":27}},
          "id": null,
          "generator": false,
          "async": false,
          "params": [
            {
              "type": "AssignmentPattern",
              "start":1,"end":20,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":20}},
              "left": {
                "type": "ArrayPattern",
                "start":1,"end":15,"loc":{"start":{"line":1,"column":1},"end":{"line":1,"column":15}},
                "elements": [
                  {
                    "type": "AssignmentPattern",
                    "start":3,"end":13,"loc":{"start":{"line":1,"column":3},"end":{"line":1,"column":13}},
                    "left": {
                      "type": "ArrayPattern",
                      "start":3,"end":8,"loc":{"start":{"line":1,"column":3},"end":{"line":1,"column":8}},
                      "elements": [
                        {
                          "type": "Identifier",
                          "start":5,"end":6,"loc":{"start":{"line":1,"column":5},"end":{"line":1,"column":6},"identifierName":"a"},
                          "name": "a",
                          "extra": {
                            "parenthesized": true,
                            "parenStart": 4
                          }
                        }
                      ]
                    },
                    "right": {
                      "type": "ArrayExpression",
                      "start":11,"end":13,"loc":{"start":{"line":1,"column":11},"end":{"line":1,"column":13}},
                      "elements": []
                    }
                  }
                ]
              },
              "right": {
                "type": "ArrayExpression",
                "start":18,"end":20,"loc":{"start":{"line":1,"column":18},"end":{"line":1,"column":20}},
                "elements": []
              }
            }
          ],
          "body": {
            "type": "BlockStatement",
            "start":25,"end":27,"loc":{"start":{"line":1,"column":25},"end":{"line":1,"column":27}},
            "body": [],
            "directives": []
          }
        }
      }
    ],
    "directives": []
  }
}