{
  "type": "Script",
  "span": {
    "start": 133,
    "end": 287,
    "ctxt": 0
  },
  "body": [
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 133,
        "end": 186,
        "ctxt": 0
      },
      "kind": "const",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 139,
            "end": 185,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 139,
              "end": 140,
              "ctxt": 0
            },
            "value": "a",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "ArrowFunctionExpression",
            "span": {
              "start": 143,
              "end": 185,
              "ctxt": 0
            },
            "params": [],
            "body": {
              "type": "Identifier",
              "span": {
                "start": 176,
                "end": 185,
                "ctxt": 0
              },
              "value": "undefined",
              "optional": false
            },
            "async": false,
            "generator": false,
            "typeParameters": null,
            "returnType": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 145,
                "end": 172,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsUnionType",
                "span": {
                  "start": 147,
                  "end": 172,
                  "ctxt": 0
                },
                "types": [
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 147,
                      "end": 160,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsPropertySignature",
                        "span": {
                          "start": 149,
                          "end": 158,
                          "ctxt": 0
                        },
                        "readonly": false,
                        "key": {
                          "type": "Identifier",
                          "span": {
                            "start": 149,
                            "end": 150,
                            "ctxt": 0
                          },
                          "value": "d",
                          "optional": false
                        },
                        "computed": false,
                        "optional": false,
                        "init": null,
                        "params": [],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 150,
                            "end": 158,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 152,
                              "end": 158,
                              "ctxt": 0
                            },
                            "kind": "string"
                          }
                        },
                        "typeParams": null
                      }
                    ]
                  },
                  {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 163,
                      "end": 172,
                      "ctxt": 0
                    },
                    "kind": "undefined"
                  }
                ]
              }
            }
          },
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 187,
        "end": 228,
        "ctxt": 0
      },
      "expression": {
        "type": "CallExpression",
        "span": {
          "start": 187,
          "end": 227,
          "ctxt": 0
        },
        "callee": {
          "type": "ParenthesisExpression",
          "span": {
            "start": 187,
            "end": 225,
            "ctxt": 0
          },
          "expression": {
            "type": "ArrowFunctionExpression",
            "span": {
              "start": 188,
              "end": 224,
              "ctxt": 0
            },
            "params": [
              {
                "type": "ObjectPattern",
                "span": {
                  "start": 189,
                  "end": 209,
                  "ctxt": 0
                },
                "properties": [
                  {
                    "type": "KeyValuePatternProperty",
                    "key": {
                      "type": "Computed",
                      "span": {
                        "start": 191,
                        "end": 199,
                        "ctxt": 0
                      },
                      "expression": {
                        "type": "OptionalChainingExpression",
                        "span": {
                          "start": 192,
                          "end": 198,
                          "ctxt": 0
                        },
                        "questionDotToken": {
                          "start": 195,
                          "end": 196,
                          "ctxt": 0
                        },
                        "base": {
                          "type": "MemberExpression",
                          "span": {
                            "start": 192,
                            "end": 198,
                            "ctxt": 0
                          },
                          "object": {
                            "type": "CallExpression",
                            "span": {
                              "start": 192,
                              "end": 195,
                              "ctxt": 0
                            },
                            "callee": {
                              "type": "Identifier",
                              "span": {
                                "start": 192,
                                "end": 193,
                                "ctxt": 0
                              },
                              "value": "a",
                              "optional": false
                            },
                            "arguments": [],
                            "typeArguments": null
                          },
                          "property": {
                            "type": "Identifier",
                            "span": {
                              "start": 197,
                              "end": 198,
                              "ctxt": 0
                            },
                            "value": "d",
                            "optional": false
                          }
                        }
                      }
                    },
                    "value": {
                      "type": "AssignmentPattern",
                      "span": {
                        "start": 201,
                        "end": 207,
                        "ctxt": 0
                      },
                      "left": {
                        "type": "Identifier",
                        "span": {
                          "start": 201,
                          "end": 202,
                          "ctxt": 0
                        },
                        "value": "c",
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "right": {
                        "type": "StringLiteral",
                        "span": {
                          "start": 205,
                          "end": 207,
                          "ctxt": 0
                        },
                        "value": "",
                        "raw": "\"\""
                      },
                      "typeAnnotation": null
                    }
                  }
                ],
                "optional": false,
                "typeAnnotation": null
              }
            ],
            "body": {
              "type": "BlockStatement",
              "span": {
                "start": 214,
                "end": 224,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "VariableDeclaration",
                  "span": {
                    "start": 216,
                    "end": 222,
                    "ctxt": 0
                  },
                  "kind": "var",
                  "declare": false,
                  "declarations": [
                    {
                      "type": "VariableDeclarator",
                      "span": {
                        "start": 220,
                        "end": 221,
                        "ctxt": 0
                      },
                      "id": {
                        "type": "Identifier",
                        "span": {
                          "start": 220,
                          "end": 221,
                          "ctxt": 0
                        },
                        "value": "a",
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "init": null,
                      "definite": false
                    }
                  ]
                }
              ]
            },
            "async": false,
            "generator": false,
            "typeParameters": null,
            "returnType": null
          }
        },
        "arguments": [],
        "typeArguments": null
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 230,
        "end": 243,
        "ctxt": 0
      },
      "kind": "const",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 236,
            "end": 242,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 236,
              "end": 237,
              "ctxt": 0
            },
            "value": "x",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "StringLiteral",
            "span": {
              "start": 240,
              "end": 242,
              "ctxt": 0
            },
            "value": "",
            "raw": "\"\""
          },
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 244,
        "end": 287,
        "ctxt": 0
      },
      "expression": {
        "type": "CallExpression",
        "span": {
          "start": 244,
          "end": 286,
          "ctxt": 0
        },
        "callee": {
          "type": "ParenthesisExpression",
          "span": {
            "start": 244,
            "end": 284,
            "ctxt": 0
          },
          "expression": {
            "type": "ArrowFunctionExpression",
            "span": {
              "start": 245,
              "end": 283,
              "ctxt": 0
            },
            "params": [
              {
                "type": "ObjectPattern",
                "span": {
                  "start": 246,
                  "end": 261,
                  "ctxt": 0
                },
                "properties": [
                  {
                    "type": "KeyValuePatternProperty",
                    "key": {
                      "type": "Computed",
                      "span": {
                        "start": 248,
                        "end": 256,
                        "ctxt": 0
                      },
                      "expression": {
                        "type": "OptionalChainingExpression",
                        "span": {
                          "start": 249,
                          "end": 255,
                          "ctxt": 0
                        },
                        "questionDotToken": {
                          "start": 252,
                          "end": 253,
                          "ctxt": 0
                        },
                        "base": {
                          "type": "MemberExpression",
                          "span": {
                            "start": 249,
                            "end": 255,
                            "ctxt": 0
                          },
                          "object": {
                            "type": "CallExpression",
                            "span": {
                              "start": 249,
                              "end": 252,
                              "ctxt": 0
                            },
                            "callee": {
                              "type": "Identifier",
                              "span": {
                                "start": 249,
                                "end": 250,
                                "ctxt": 0
                              },
                              "value": "a",
                              "optional": false
                            },
                            "arguments": [],
                            "typeArguments": null
                          },
                          "property": {
                            "type": "Identifier",
                            "span": {
                              "start": 254,
                              "end": 255,
                              "ctxt": 0
                            },
                            "value": "d",
                            "optional": false
                          }
                        }
                      }
                    },
                    "value": {
                      "type": "Identifier",
                      "span": {
                        "start": 258,
                        "end": 259,
                        "ctxt": 0
                      },
                      "value": "c",
                      "optional": false,
                      "typeAnnotation": null
                    }
                  }
                ],
                "optional": false,
                "typeAnnotation": null
              },
              {
                "type": "AssignmentPattern",
                "span": {
                  "start": 263,
                  "end": 268,
                  "ctxt": 0
                },
                "left": {
                  "type": "Identifier",
                  "span": {
                    "start": 263,
                    "end": 264,
                    "ctxt": 0
                  },
                  "value": "d",
                  "optional": false,
                  "typeAnnotation": null
                },
                "right": {
                  "type": "Identifier",
                  "span": {
                    "start": 267,
                    "end": 268,
                    "ctxt": 0
                  },
                  "value": "x",
                  "optional": false
                },
                "typeAnnotation": null
              }
            ],
            "body": {
              "type": "BlockStatement",
              "span": {
                "start": 273,
                "end": 283,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "VariableDeclaration",
                  "span": {
                    "start": 275,
                    "end": 281,
                    "ctxt": 0
                  },
                  "kind": "var",
                  "declare": false,
                  "declarations": [
                    {
                      "type": "VariableDeclarator",
                      "span": {
                        "start": 279,
                        "end": 280,
                        "ctxt": 0
                      },
                      "id": {
                        "type": "Identifier",
                        "span": {
                          "start": 279,
                          "end": 280,
                          "ctxt": 0
                        },
                        "value": "x",
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "init": null,
                      "definite": false
                    }
                  ]
                }
              ]
            },
            "async": false,
            "generator": false,
            "typeParameters": null,
            "returnType": null
          }
        },
        "arguments": [],
        "typeArguments": null
      }
    }
  ],
  "interpreter": null
}