babel/packages/babel-parser/test/fixtures/experimental/optional-chaining-assign/invalid-fn-param-arrow/output.json

{
  "type": "File",
  "start":0,"end":12,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":12,"index":12}},
  "errors": [
    "SyntaxError: Invalid optional chaining in the left-hand side of function parameter list. (1:1)",
    "SyntaxError: Binding member expression. (1:1)"
  ],
  "program": {
    "type": "Program",
    "start":0,"end":12,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":12,"index":12}},
    "sourceType": "script",
    "interpreter": null,
    "body": [
      {
        "type": "ExpressionStatement",
        "start":0,"end":12,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":12,"index":12}},
        "expression": {
          "type": "ArrowFunctionExpression",
          "start":0,"end":12,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":12,"index":12}},
          "id": null,
          "generator": false,
          "async": false,
          "params": [
            {
              "type": "OptionalMemberExpression",
              "start":1,"end":5,"loc":{"start":{"line":1,"column":1,"index":1},"end":{"line":1,"column":5,"index":5}},
              "object": {
                "type": "Identifier",
                "start":1,"end":2,"loc":{"start":{"line":1,"column":1,"index":1},"end":{"line":1,"column":2,"index":2},"identifierName":"a"},
                "name": "a"
              },
              "computed": false,
              "property": {
                "type": "Identifier",
                "start":4,"end":5,"loc":{"start":{"line":1,"column":4,"index":4},"end":{"line":1,"column":5,"index":5},"identifierName":"b"},
                "name": "b"
              },
              "optional": true
            }
          ],
          "body": {
            "type": "BlockStatement",
            "start":10,"end":12,"loc":{"start":{"line":1,"column":10,"index":10},"end":{"line":1,"column":12,"index":12}},
            "body": [],
            "directives": []
          }
        }
      }
    ],
    "directives": []
  }
}