babel/packages/babel-parser/test/fixtures/estree/optional-chaining/optional-member-member/output.json

{
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    "body": [
      {
        "type": "ExpressionStatement",
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        "expression": {
          "type": "MemberExpression",
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                "name": "foo"
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                "start":6,"end":9,"loc":{"start":{"line":1,"column":6},"end":{"line":1,"column":9},"identifierName":"bar"},
                "name": "bar"
              },
              "optional": true
            },
            "extra": {
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              "parenStart": 0
            }
          },
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          "property": {
            "type": "Identifier",
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          },
          "optional": false
        }
      }
    ]
  }
}