{
  "type": "File",
  "start":0,"end":37,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":37}},
  "program": {
    "type": "Program",
    "start":0,"end":37,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":37}},
    "sourceType": "module",
    "interpreter": null,
    "body": [
      {
        "type": "TSTypeAliasDeclaration",
        "start":0,"end":37,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":37}},
        "id": {
          "type": "Identifier",
          "start":5,"end":6,"loc":{"start":{"line":1,"column":5},"end":{"line":1,"column":6},"identifierName":"T"},
          "name": "T"
        },
        "typeAnnotation": {
          "type": "TSTupleType",
          "start":9,"end":36,"loc":{"start":{"line":1,"column":9},"end":{"line":1,"column":36}},
          "elementTypes": [
            {
              "type": "TSNamedTupleMember",
              "start":10,"end":21,"loc":{"start":{"line":1,"column":10},"end":{"line":1,"column":21}},
              "optional": false,
              "label": {
                "type": "Identifier",
                "start":10,"end":13,"loc":{"start":{"line":1,"column":10},"end":{"line":1,"column":13},"identifierName":"foo"},
                "name": "foo"
              },
              "elementType": {
                "type": "TSStringKeyword",
                "start":15,"end":21,"loc":{"start":{"line":1,"column":15},"end":{"line":1,"column":21}}
              }
            },
            {
              "type": "TSNamedTupleMember",
              "start":23,"end":35,"loc":{"start":{"line":1,"column":23},"end":{"line":1,"column":35}},
              "optional": true,
              "label": {
                "type": "Identifier",
                "start":23,"end":26,"loc":{"start":{"line":1,"column":23},"end":{"line":1,"column":26},"identifierName":"bar"},
                "name": "bar"
              },
              "elementType": {
                "type": "TSNumberKeyword",
                "start":29,"end":35,"loc":{"start":{"line":1,"column":29},"end":{"line":1,"column":35}}
              }
            }
          ]
        }
      }
    ],
    "directives": []
  }
}