{
  "type": "Script",
  "span": {
    "start": 16,
    "end": 47,
    "ctxt": 0
  },
  "body": [
    {
      "type": "FunctionDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 26,
          "end": 29,
          "ctxt": 0
        },
        "value": "foo",
        "optional": false
      },
      "declare": false,
      "params": [],
      "decorators": [],
      "span": {
        "start": 16,
        "end": 47,
        "ctxt": 0
      },
      "body": {
        "type": "BlockStatement",
        "span": {
          "start": 32,
          "end": 47,
          "ctxt": 0
        },
        "stmts": [
          {
            "type": "ExpressionStatement",
            "span": {
              "start": 36,
              "end": 45,
              "ctxt": 0
            },
            "expression": {
              "type": "YieldExpression",
              "span": {
                "start": 36,
                "end": 45,
                "ctxt": 0
              },
              "argument": {
                "type": "Identifier",
                "span": {
                  "start": 42,
                  "end": 45,
                  "ctxt": 0
                },
                "value": "foo",
                "optional": false
              },
              "delegate": true
            }
          }
        ]
      },
      "generator": true,
      "async": false,
      "typeParameters": null,
      "returnType": null
    }
  ],
  "interpreter": null
}