{
  "type": "Script",
  "span": {
    "start": 18,
    "end": 936,
    "ctxt": 0
  },
  "body": [
    {
      "type": "FunctionDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 27,
          "end": 29,
          "ctxt": 0
        },
        "value": "f1",
        "optional": false
      },
      "declare": false,
      "params": [
        {
          "type": "Parameter",
          "span": {
            "start": 30,
            "end": 49,
            "ctxt": 0
          },
          "decorators": [],
          "pat": {
            "type": "Identifier",
            "span": {
              "start": 30,
              "end": 49,
              "ctxt": 0
            },
            "value": "obj",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 33,
                "end": 49,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 35,
                  "end": 49,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsPropertySignature",
                    "span": {
                      "start": 37,
                      "end": 47,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 37,
                        "end": 38,
                        "ctxt": 0
                      },
                      "value": "a",
                      "optional": false
                    },
                    "computed": false,
                    "optional": true,
                    "init": null,
                    "params": [],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 39,
                        "end": 47,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 41,
                          "end": 47,
                          "ctxt": 0
                        },
                        "kind": "string"
                      }
                    },
                    "typeParams": null
                  }
                ]
              }
            }
          }
        }
      ],
      "decorators": [],
      "span": {
        "start": 18,
        "end": 192,
        "ctxt": 0
      },
      "body": {
        "type": "BlockStatement",
        "span": {
          "start": 51,
          "end": 192,
          "ctxt": 0
        },
        "stmts": [
          {
            "type": "IfStatement",
            "span": {
              "start": 57,
              "end": 190,
              "ctxt": 0
            },
            "test": {
              "type": "MemberExpression",
              "span": {
                "start": 61,
                "end": 66,
                "ctxt": 0
              },
              "object": {
                "type": "Identifier",
                "span": {
                  "start": 61,
                  "end": 64,
                  "ctxt": 0
                },
                "value": "obj",
                "optional": false
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 65,
                  "end": 66,
                  "ctxt": 0
                },
                "value": "a",
                "optional": false
              }
            },
            "consequent": {
              "type": "BlockStatement",
              "span": {
                "start": 68,
                "end": 190,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "ExpressionStatement",
                  "span": {
                    "start": 78,
                    "end": 87,
                    "ctxt": 0
                  },
                  "expression": {
                    "type": "AssignmentExpression",
                    "span": {
                      "start": 78,
                      "end": 86,
                      "ctxt": 0
                    },
                    "operator": "=",
                    "left": {
                      "type": "Identifier",
                      "span": {
                        "start": 78,
                        "end": 81,
                        "ctxt": 0
                      },
                      "value": "obj",
                      "optional": false,
                      "typeAnnotation": null
                    },
                    "right": {
                      "type": "ObjectExpression",
                      "span": {
                        "start": 84,
                        "end": 86,
                        "ctxt": 0
                      },
                      "properties": []
                    }
                  }
                },
                {
                  "type": "VariableDeclaration",
                  "span": {
                    "start": 96,
                    "end": 114,
                    "ctxt": 0
                  },
                  "kind": "let",
                  "declare": false,
                  "declarations": [
                    {
                      "type": "VariableDeclarator",
                      "span": {
                        "start": 100,
                        "end": 113,
                        "ctxt": 0
                      },
                      "id": {
                        "type": "Identifier",
                        "span": {
                          "start": 100,
                          "end": 102,
                          "ctxt": 0
                        },
                        "value": "a1",
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "init": {
                        "type": "MemberExpression",
                        "span": {
                          "start": 105,
                          "end": 113,
                          "ctxt": 0
                        },
                        "object": {
                          "type": "Identifier",
                          "span": {
                            "start": 105,
                            "end": 108,
                            "ctxt": 0
                          },
                          "value": "obj",
                          "optional": false
                        },
                        "property": {
                          "type": "Computed",
                          "span": {
                            "start": 108,
                            "end": 113,
                            "ctxt": 0
                          },
                          "expression": {
                            "type": "StringLiteral",
                            "span": {
                              "start": 109,
                              "end": 112,
                              "ctxt": 0
                            },
                            "value": "a",
                            "raw": "\"a\""
                          }
                        }
                      },
                      "definite": false
                    }
                  ]
                },
                {
                  "type": "VariableDeclaration",
                  "span": {
                    "start": 146,
                    "end": 161,
                    "ctxt": 0
                  },
                  "kind": "let",
                  "declare": false,
                  "declarations": [
                    {
                      "type": "VariableDeclarator",
                      "span": {
                        "start": 150,
                        "end": 160,
                        "ctxt": 0
                      },
                      "id": {
                        "type": "Identifier",
                        "span": {
                          "start": 150,
                          "end": 152,
                          "ctxt": 0
                        },
                        "value": "a2",
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "init": {
                        "type": "MemberExpression",
                        "span": {
                          "start": 155,
                          "end": 160,
                          "ctxt": 0
                        },
                        "object": {
                          "type": "Identifier",
                          "span": {
                            "start": 155,
                            "end": 158,
                            "ctxt": 0
                          },
                          "value": "obj",
                          "optional": false
                        },
                        "property": {
                          "type": "Identifier",
                          "span": {
                            "start": 159,
                            "end": 160,
                            "ctxt": 0
                          },
                          "value": "a",
                          "optional": false
                        }
                      },
                      "definite": false
                    }
                  ]
                }
              ]
            },
            "alternate": null
          }
        ]
      },
      "generator": false,
      "async": false,
      "typeParameters": null,
      "returnType": null
    },
    {
      "type": "FunctionDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 203,
          "end": 205,
          "ctxt": 0
        },
        "value": "f2",
        "optional": false
      },
      "declare": false,
      "params": [
        {
          "type": "Parameter",
          "span": {
            "start": 206,
            "end": 236,
            "ctxt": 0
          },
          "decorators": [],
          "pat": {
            "type": "Identifier",
            "span": {
              "start": 206,
              "end": 236,
              "ctxt": 0
            },
            "value": "obj",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 209,
                "end": 236,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsUnionType",
                "span": {
                  "start": 211,
                  "end": 236,
                  "ctxt": 0
                },
                "types": [
                  {
                    "type": "TsTupleType",
                    "span": {
                      "start": 211,
                      "end": 227,
                      "ctxt": 0
                    },
                    "elemTypes": [
                      {
                        "type": "TsTupleElement",
                        "span": {
                          "start": 212,
                          "end": 218,
                          "ctxt": 0
                        },
                        "label": null,
                        "ty": {
                          "type": "TsKeywordType",
                          "span": {
                            "start": 212,
                            "end": 218,
                            "ctxt": 0
                          },
                          "kind": "number"
                        }
                      },
                      {
                        "type": "TsTupleElement",
                        "span": {
                          "start": 220,
                          "end": 226,
                          "ctxt": 0
                        },
                        "label": null,
                        "ty": {
                          "type": "TsKeywordType",
                          "span": {
                            "start": 220,
                            "end": 226,
                            "ctxt": 0
                          },
                          "kind": "string"
                        }
                      }
                    ]
                  },
                  {
                    "type": "TsArrayType",
                    "span": {
                      "start": 230,
                      "end": 236,
                      "ctxt": 0
                    },
                    "elemType": {
                      "type": "TsKeywordType",
                      "span": {
                        "start": 230,
                        "end": 234,
                        "ctxt": 0
                      },
                      "kind": "null"
                    }
                  }
                ]
              }
            }
          }
        }
      ],
      "decorators": [],
      "span": {
        "start": 194,
        "end": 525,
        "ctxt": 0
      },
      "body": {
        "type": "BlockStatement",
        "span": {
          "start": 238,
          "end": 525,
          "ctxt": 0
        },
        "stmts": [
          {
            "type": "VariableDeclaration",
            "span": {
              "start": 244,
              "end": 260,
              "ctxt": 0
            },
            "kind": "let",
            "declare": false,
            "declarations": [
              {
                "type": "VariableDeclarator",
                "span": {
                  "start": 248,
                  "end": 259,
                  "ctxt": 0
                },
                "id": {
                  "type": "Identifier",
                  "span": {
                    "start": 248,
                    "end": 250,
                    "ctxt": 0
                  },
                  "value": "a0",
                  "optional": false,
                  "typeAnnotation": null
                },
                "init": {
                  "type": "MemberExpression",
                  "span": {
                    "start": 253,
                    "end": 259,
                    "ctxt": 0
                  },
                  "object": {
                    "type": "Identifier",
                    "span": {
                      "start": 253,
                      "end": 256,
                      "ctxt": 0
                    },
                    "value": "obj",
                    "optional": false
                  },
                  "property": {
                    "type": "Computed",
                    "span": {
                      "start": 256,
                      "end": 259,
                      "ctxt": 0
                    },
                    "expression": {
                      "type": "NumericLiteral",
                      "span": {
                        "start": 257,
                        "end": 258,
                        "ctxt": 0
                      },
                      "value": 0.0,
                      "raw": "0"
                    }
                  }
                },
                "definite": false
              }
            ]
          },
          {
            "type": "VariableDeclaration",
            "span": {
              "start": 283,
              "end": 299,
              "ctxt": 0
            },
            "kind": "let",
            "declare": false,
            "declarations": [
              {
                "type": "VariableDeclarator",
                "span": {
                  "start": 287,
                  "end": 298,
                  "ctxt": 0
                },
                "id": {
                  "type": "Identifier",
                  "span": {
                    "start": 287,
                    "end": 289,
                    "ctxt": 0
                  },
                  "value": "a1",
                  "optional": false,
                  "typeAnnotation": null
                },
                "init": {
                  "type": "MemberExpression",
                  "span": {
                    "start": 292,
                    "end": 298,
                    "ctxt": 0
                  },
                  "object": {
                    "type": "Identifier",
                    "span": {
                      "start": 292,
                      "end": 295,
                      "ctxt": 0
                    },
                    "value": "obj",
                    "optional": false
                  },
                  "property": {
                    "type": "Computed",
                    "span": {
                      "start": 295,
                      "end": 298,
                      "ctxt": 0
                    },
                    "expression": {
                      "type": "NumericLiteral",
                      "span": {
                        "start": 296,
                        "end": 297,
                        "ctxt": 0
                      },
                      "value": 1.0,
                      "raw": "1"
                    }
                  }
                },
                "definite": false
              }
            ]
          },
          {
            "type": "VariableDeclaration",
            "span": {
              "start": 322,
              "end": 341,
              "ctxt": 0
            },
            "kind": "let",
            "declare": false,
            "declarations": [
              {
                "type": "VariableDeclarator",
                "span": {
                  "start": 326,
                  "end": 340,
                  "ctxt": 0
                },
                "id": {
                  "type": "ArrayPattern",
                  "span": {
                    "start": 326,
                    "end": 334,
                    "ctxt": 0
                  },
                  "elements": [
                    {
                      "type": "Identifier",
                      "span": {
                        "start": 327,
                        "end": 329,
                        "ctxt": 0
                      },
                      "value": "b0",
                      "optional": false,
                      "typeAnnotation": null
                    },
                    {
                      "type": "Identifier",
                      "span": {
                        "start": 331,
                        "end": 333,
                        "ctxt": 0
                      },
                      "value": "b1",
                      "optional": false,
                      "typeAnnotation": null
                    }
                  ],
                  "optional": false,
                  "typeAnnotation": null
                },
                "init": {
                  "type": "Identifier",
                  "span": {
                    "start": 337,
                    "end": 340,
                    "ctxt": 0
                  },
                  "value": "obj",
                  "optional": false
                },
                "definite": false
              }
            ]
          },
          {
            "type": "ExpressionStatement",
            "span": {
              "start": 346,
              "end": 363,
              "ctxt": 0
            },
            "expression": {
              "type": "ParenthesisExpression",
              "span": {
                "start": 346,
                "end": 362,
                "ctxt": 0
              },
              "expression": {
                "type": "AssignmentExpression",
                "span": {
                  "start": 347,
                  "end": 361,
                  "ctxt": 0
                },
                "operator": "=",
                "left": {
                  "type": "ArrayPattern",
                  "span": {
                    "start": 347,
                    "end": 355,
                    "ctxt": 0
                  },
                  "elements": [
                    {
                      "type": "Identifier",
                      "span": {
                        "start": 348,
                        "end": 350,
                        "ctxt": 0
                      },
                      "value": "a0",
                      "optional": false,
                      "typeAnnotation": null
                    },
                    {
                      "type": "Identifier",
                      "span": {
                        "start": 352,
                        "end": 354,
                        "ctxt": 0
                      },
                      "value": "a1",
                      "optional": false,
                      "typeAnnotation": null
                    }
                  ],
                  "optional": false,
                  "typeAnnotation": null
                },
                "right": {
                  "type": "Identifier",
                  "span": {
                    "start": 358,
                    "end": 361,
                    "ctxt": 0
                  },
                  "value": "obj",
                  "optional": false
                }
              }
            }
          },
          {
            "type": "IfStatement",
            "span": {
              "start": 368,
              "end": 523,
              "ctxt": 0
            },
            "test": {
              "type": "BinaryExpression",
              "span": {
                "start": 372,
                "end": 388,
                "ctxt": 0
              },
              "operator": "&&",
              "left": {
                "type": "MemberExpression",
                "span": {
                  "start": 372,
                  "end": 378,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 372,
                    "end": 375,
                    "ctxt": 0
                  },
                  "value": "obj",
                  "optional": false
                },
                "property": {
                  "type": "Computed",
                  "span": {
                    "start": 375,
                    "end": 378,
                    "ctxt": 0
                  },
                  "expression": {
                    "type": "NumericLiteral",
                    "span": {
                      "start": 376,
                      "end": 377,
                      "ctxt": 0
                    },
                    "value": 0.0,
                    "raw": "0"
                  }
                }
              },
              "right": {
                "type": "MemberExpression",
                "span": {
                  "start": 382,
                  "end": 388,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 382,
                    "end": 385,
                    "ctxt": 0
                  },
                  "value": "obj",
                  "optional": false
                },
                "property": {
                  "type": "Computed",
                  "span": {
                    "start": 385,
                    "end": 388,
                    "ctxt": 0
                  },
                  "expression": {
                    "type": "NumericLiteral",
                    "span": {
                      "start": 386,
                      "end": 387,
                      "ctxt": 0
                    },
                    "value": 1.0,
                    "raw": "1"
                  }
                }
              }
            },
            "consequent": {
              "type": "BlockStatement",
              "span": {
                "start": 390,
                "end": 523,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "VariableDeclaration",
                  "span": {
                    "start": 400,
                    "end": 416,
                    "ctxt": 0
                  },
                  "kind": "let",
                  "declare": false,
                  "declarations": [
                    {
                      "type": "VariableDeclarator",
                      "span": {
                        "start": 404,
                        "end": 415,
                        "ctxt": 0
                      },
                      "id": {
                        "type": "Identifier",
                        "span": {
                          "start": 404,
                          "end": 406,
                          "ctxt": 0
                        },
                        "value": "c0",
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "init": {
                        "type": "MemberExpression",
                        "span": {
                          "start": 409,
                          "end": 415,
                          "ctxt": 0
                        },
                        "object": {
                          "type": "Identifier",
                          "span": {
                            "start": 409,
                            "end": 412,
                            "ctxt": 0
                          },
                          "value": "obj",
                          "optional": false
                        },
                        "property": {
                          "type": "Computed",
                          "span": {
                            "start": 412,
                            "end": 415,
                            "ctxt": 0
                          },
                          "expression": {
                            "type": "NumericLiteral",
                            "span": {
                              "start": 413,
                              "end": 414,
                              "ctxt": 0
                            },
                            "value": 0.0,
                            "raw": "0"
                          }
                        }
                      },
                      "definite": false
                    }
                  ]
                },
                {
                  "type": "VariableDeclaration",
                  "span": {
                    "start": 436,
                    "end": 452,
                    "ctxt": 0
                  },
                  "kind": "let",
                  "declare": false,
                  "declarations": [
                    {
                      "type": "VariableDeclarator",
                      "span": {
                        "start": 440,
                        "end": 451,
                        "ctxt": 0
                      },
                      "id": {
                        "type": "Identifier",
                        "span": {
                          "start": 440,
                          "end": 442,
                          "ctxt": 0
                        },
                        "value": "c1",
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "init": {
                        "type": "MemberExpression",
                        "span": {
                          "start": 445,
                          "end": 451,
                          "ctxt": 0
                        },
                        "object": {
                          "type": "Identifier",
                          "span": {
                            "start": 445,
                            "end": 448,
                            "ctxt": 0
                          },
                          "value": "obj",
                          "optional": false
                        },
                        "property": {
                          "type": "Computed",
                          "span": {
                            "start": 448,
                            "end": 451,
                            "ctxt": 0
                          },
                          "expression": {
                            "type": "NumericLiteral",
                            "span": {
                              "start": 449,
                              "end": 450,
                              "ctxt": 0
                            },
                            "value": 1.0,
                            "raw": "1"
                          }
                        }
                      },
                      "definite": false
                    }
                  ]
                },
                {
                  "type": "VariableDeclaration",
                  "span": {
                    "start": 472,
                    "end": 491,
                    "ctxt": 0
                  },
                  "kind": "let",
                  "declare": false,
                  "declarations": [
                    {
                      "type": "VariableDeclarator",
                      "span": {
                        "start": 476,
                        "end": 490,
                        "ctxt": 0
                      },
                      "id": {
                        "type": "ArrayPattern",
                        "span": {
                          "start": 476,
                          "end": 484,
                          "ctxt": 0
                        },
                        "elements": [
                          {
                            "type": "Identifier",
                            "span": {
                              "start": 477,
                              "end": 479,
                              "ctxt": 0
                            },
                            "value": "d0",
                            "optional": false,
                            "typeAnnotation": null
                          },
                          {
                            "type": "Identifier",
                            "span": {
                              "start": 481,
                              "end": 483,
                              "ctxt": 0
                            },
                            "value": "d1",
                            "optional": false,
                            "typeAnnotation": null
                          }
                        ],
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "init": {
                        "type": "Identifier",
                        "span": {
                          "start": 487,
                          "end": 490,
                          "ctxt": 0
                        },
                        "value": "obj",
                        "optional": false
                      },
                      "definite": false
                    }
                  ]
                },
                {
                  "type": "ExpressionStatement",
                  "span": {
                    "start": 500,
                    "end": 517,
                    "ctxt": 0
                  },
                  "expression": {
                    "type": "ParenthesisExpression",
                    "span": {
                      "start": 500,
                      "end": 516,
                      "ctxt": 0
                    },
                    "expression": {
                      "type": "AssignmentExpression",
                      "span": {
                        "start": 501,
                        "end": 515,
                        "ctxt": 0
                      },
                      "operator": "=",
                      "left": {
                        "type": "ArrayPattern",
                        "span": {
                          "start": 501,
                          "end": 509,
                          "ctxt": 0
                        },
                        "elements": [
                          {
                            "type": "Identifier",
                            "span": {
                              "start": 502,
                              "end": 504,
                              "ctxt": 0
                            },
                            "value": "c0",
                            "optional": false,
                            "typeAnnotation": null
                          },
                          {
                            "type": "Identifier",
                            "span": {
                              "start": 506,
                              "end": 508,
                              "ctxt": 0
                            },
                            "value": "c1",
                            "optional": false,
                            "typeAnnotation": null
                          }
                        ],
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "right": {
                        "type": "Identifier",
                        "span": {
                          "start": 512,
                          "end": 515,
                          "ctxt": 0
                        },
                        "value": "obj",
                        "optional": false
                      }
                    }
                  }
                }
              ]
            },
            "alternate": null
          }
        ]
      },
      "generator": false,
      "async": false,
      "typeParameters": null,
      "returnType": null
    },
    {
      "type": "FunctionDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 536,
          "end": 538,
          "ctxt": 0
        },
        "value": "f3",
        "optional": false
      },
      "declare": false,
      "params": [
        {
          "type": "Parameter",
          "span": {
            "start": 539,
            "end": 570,
            "ctxt": 0
          },
          "decorators": [],
          "pat": {
            "type": "Identifier",
            "span": {
              "start": 539,
              "end": 570,
              "ctxt": 0
            },
            "value": "obj",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 542,
                "end": 570,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 544,
                  "end": 570,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsPropertySignature",
                    "span": {
                      "start": 546,
                      "end": 557,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 546,
                        "end": 547,
                        "ctxt": 0
                      },
                      "value": "a",
                      "optional": false
                    },
                    "computed": false,
                    "optional": true,
                    "init": null,
                    "params": [],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 548,
                        "end": 556,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 550,
                          "end": 556,
                          "ctxt": 0
                        },
                        "kind": "number"
                      }
                    },
                    "typeParams": null
                  },
                  {
                    "type": "TsPropertySignature",
                    "span": {
                      "start": 558,
                      "end": 568,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 558,
                        "end": 559,
                        "ctxt": 0
                      },
                      "value": "b",
                      "optional": false
                    },
                    "computed": false,
                    "optional": true,
                    "init": null,
                    "params": [],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 560,
                        "end": 568,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 562,
                          "end": 568,
                          "ctxt": 0
                        },
                        "kind": "string"
                      }
                    },
                    "typeParams": null
                  }
                ]
              }
            }
          }
        }
      ],
      "decorators": [],
      "span": {
        "start": 527,
        "end": 680,
        "ctxt": 0
      },
      "body": {
        "type": "BlockStatement",
        "span": {
          "start": 572,
          "end": 680,
          "ctxt": 0
        },
        "stmts": [
          {
            "type": "IfStatement",
            "span": {
              "start": 578,
              "end": 678,
              "ctxt": 0
            },
            "test": {
              "type": "BinaryExpression",
              "span": {
                "start": 582,
                "end": 596,
                "ctxt": 0
              },
              "operator": "&&",
              "left": {
                "type": "MemberExpression",
                "span": {
                  "start": 582,
                  "end": 587,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 582,
                    "end": 585,
                    "ctxt": 0
                  },
                  "value": "obj",
                  "optional": false
                },
                "property": {
                  "type": "Identifier",
                  "span": {
                    "start": 586,
                    "end": 587,
                    "ctxt": 0
                  },
                  "value": "a",
                  "optional": false
                }
              },
              "right": {
                "type": "MemberExpression",
                "span": {
                  "start": 591,
                  "end": 596,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 591,
                    "end": 594,
                    "ctxt": 0
                  },
                  "value": "obj",
                  "optional": false
                },
                "property": {
                  "type": "Identifier",
                  "span": {
                    "start": 595,
                    "end": 596,
                    "ctxt": 0
                  },
                  "value": "b",
                  "optional": false
                }
              }
            },
            "consequent": {
              "type": "BlockStatement",
              "span": {
                "start": 598,
                "end": 678,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "VariableDeclaration",
                  "span": {
                    "start": 608,
                    "end": 627,
                    "ctxt": 0
                  },
                  "kind": "let",
                  "declare": false,
                  "declarations": [
                    {
                      "type": "VariableDeclarator",
                      "span": {
                        "start": 612,
                        "end": 626,
                        "ctxt": 0
                      },
                      "id": {
                        "type": "ObjectPattern",
                        "span": {
                          "start": 612,
                          "end": 620,
                          "ctxt": 0
                        },
                        "properties": [
                          {
                            "type": "AssignmentPatternProperty",
                            "span": {
                              "start": 614,
                              "end": 615,
                              "ctxt": 0
                            },
                            "key": {
                              "type": "Identifier",
                              "span": {
                                "start": 614,
                                "end": 615,
                                "ctxt": 0
                              },
                              "value": "a",
                              "optional": false
                            },
                            "value": null
                          },
                          {
                            "type": "AssignmentPatternProperty",
                            "span": {
                              "start": 617,
                              "end": 618,
                              "ctxt": 0
                            },
                            "key": {
                              "type": "Identifier",
                              "span": {
                                "start": 617,
                                "end": 618,
                                "ctxt": 0
                              },
                              "value": "b",
                              "optional": false
                            },
                            "value": null
                          }
                        ],
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "init": {
                        "type": "Identifier",
                        "span": {
                          "start": 623,
                          "end": 626,
                          "ctxt": 0
                        },
                        "value": "obj",
                        "optional": false
                      },
                      "definite": false
                    }
                  ]
                },
                {
                  "type": "ExpressionStatement",
                  "span": {
                    "start": 655,
                    "end": 672,
                    "ctxt": 0
                  },
                  "expression": {
                    "type": "ParenthesisExpression",
                    "span": {
                      "start": 655,
                      "end": 671,
                      "ctxt": 0
                    },
                    "expression": {
                      "type": "AssignmentExpression",
                      "span": {
                        "start": 656,
                        "end": 670,
                        "ctxt": 0
                      },
                      "operator": "=",
                      "left": {
                        "type": "ObjectPattern",
                        "span": {
                          "start": 656,
                          "end": 664,
                          "ctxt": 0
                        },
                        "properties": [
                          {
                            "type": "AssignmentPatternProperty",
                            "span": {
                              "start": 658,
                              "end": 659,
                              "ctxt": 0
                            },
                            "key": {
                              "type": "Identifier",
                              "span": {
                                "start": 658,
                                "end": 659,
                                "ctxt": 0
                              },
                              "value": "a",
                              "optional": false
                            },
                            "value": null
                          },
                          {
                            "type": "AssignmentPatternProperty",
                            "span": {
                              "start": 661,
                              "end": 662,
                              "ctxt": 0
                            },
                            "key": {
                              "type": "Identifier",
                              "span": {
                                "start": 661,
                                "end": 662,
                                "ctxt": 0
                              },
                              "value": "b",
                              "optional": false
                            },
                            "value": null
                          }
                        ],
                        "optional": false,
                        "typeAnnotation": null
                      },
                      "right": {
                        "type": "Identifier",
                        "span": {
                          "start": 667,
                          "end": 670,
                          "ctxt": 0
                        },
                        "value": "obj",
                        "optional": false
                      }
                    }
                  }
                }
              ]
            },
            "alternate": null
          }
        ]
      },
      "generator": false,
      "async": false,
      "typeParameters": null,
      "returnType": null
    },
    {
      "type": "FunctionDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 691,
          "end": 693,
          "ctxt": 0
        },
        "value": "f4",
        "optional": false
      },
      "declare": false,
      "params": [],
      "decorators": [],
      "span": {
        "start": 682,
        "end": 819,
        "ctxt": 0
      },
      "body": {
        "type": "BlockStatement",
        "span": {
          "start": 696,
          "end": 819,
          "ctxt": 0
        },
        "stmts": [
          {
            "type": "VariableDeclaration",
            "span": {
              "start": 702,
              "end": 717,
              "ctxt": 0
            },
            "kind": "let",
            "declare": false,
            "declarations": [
              {
                "type": "VariableDeclarator",
                "span": {
                  "start": 706,
                  "end": 716,
                  "ctxt": 0
                },
                "id": {
                  "type": "Identifier",
                  "span": {
                    "start": 706,
                    "end": 707,
                    "ctxt": 0
                  },
                  "value": "x",
                  "optional": false,
                  "typeAnnotation": {
                    "type": "TsTypeAnnotation",
                    "span": {
                      "start": 707,
                      "end": 716,
                      "ctxt": 0
                    },
                    "typeAnnotation": {
                      "type": "TsKeywordType",
                      "span": {
                        "start": 709,
                        "end": 716,
                        "ctxt": 0
                      },
                      "kind": "boolean"
                    }
                  }
                },
                "init": null,
                "definite": false
              }
            ]
          },
          {
            "type": "ExpressionStatement",
            "span": {
              "start": 722,
              "end": 734,
              "ctxt": 0
            },
            "expression": {
              "type": "ParenthesisExpression",
              "span": {
                "start": 722,
                "end": 733,
                "ctxt": 0
              },
              "expression": {
                "type": "AssignmentExpression",
                "span": {
                  "start": 723,
                  "end": 732,
                  "ctxt": 0
                },
                "operator": "=",
                "left": {
                  "type": "ObjectPattern",
                  "span": {
                    "start": 723,
                    "end": 728,
                    "ctxt": 0
                  },
                  "properties": [
                    {
                      "type": "AssignmentPatternProperty",
                      "span": {
                        "start": 725,
                        "end": 726,
                        "ctxt": 0
                      },
                      "key": {
                        "type": "Identifier",
                        "span": {
                          "start": 725,
                          "end": 726,
                          "ctxt": 0
                        },
                        "value": "x",
                        "optional": false
                      },
                      "value": null
                    }
                  ],
                  "optional": false,
                  "typeAnnotation": null
                },
                "right": {
                  "type": "NumericLiteral",
                  "span": {
                    "start": 731,
                    "end": 732,
                    "ctxt": 0
                  },
                  "value": 0.0,
                  "raw": "0"
                }
              }
            }
          },
          {
            "type": "ExpressionStatement",
            "span": {
              "start": 749,
              "end": 768,
              "ctxt": 0
            },
            "expression": {
              "type": "ParenthesisExpression",
              "span": {
                "start": 749,
                "end": 767,
                "ctxt": 0
              },
              "expression": {
                "type": "AssignmentExpression",
                "span": {
                  "start": 750,
                  "end": 766,
                  "ctxt": 0
                },
                "operator": "=",
                "left": {
                  "type": "ObjectPattern",
                  "span": {
                    "start": 750,
                    "end": 762,
                    "ctxt": 0
                  },
                  "properties": [
                    {
                      "type": "KeyValuePatternProperty",
                      "key": {
                        "type": "Computed",
                        "span": {
                          "start": 752,
                          "end": 757,
                          "ctxt": 0
                        },
                        "expression": {
                          "type": "StringLiteral",
                          "span": {
                            "start": 753,
                            "end": 756,
                            "ctxt": 0
                          },
                          "value": "x",
                          "raw": "\"x\""
                        }
                      },
                      "value": {
                        "type": "Identifier",
                        "span": {
                          "start": 759,
                          "end": 760,
                          "ctxt": 0
                        },
                        "value": "x",
                        "optional": false,
                        "typeAnnotation": null
                      }
                    }
                  ],
                  "optional": false,
                  "typeAnnotation": null
                },
                "right": {
                  "type": "NumericLiteral",
                  "span": {
                    "start": 765,
                    "end": 766,
                    "ctxt": 0
                  },
                  "value": 0.0,
                  "raw": "0"
                }
              }
            }
          },
          {
            "type": "ExpressionStatement",
            "span": {
              "start": 783,
              "end": 807,
              "ctxt": 0
            },
            "expression": {
              "type": "ParenthesisExpression",
              "span": {
                "start": 783,
                "end": 806,
                "ctxt": 0
              },
              "expression": {
                "type": "AssignmentExpression",
                "span": {
                  "start": 784,
                  "end": 805,
                  "ctxt": 0
                },
                "operator": "=",
                "left": {
                  "type": "ObjectPattern",
                  "span": {
                    "start": 784,
                    "end": 801,
                    "ctxt": 0
                  },
                  "properties": [
                    {
                      "type": "KeyValuePatternProperty",
                      "key": {
                        "type": "Computed",
                        "span": {
                          "start": 786,
                          "end": 796,
                          "ctxt": 0
                        },
                        "expression": {
                          "type": "BinaryExpression",
                          "span": {
                            "start": 787,
                            "end": 795,
                            "ctxt": 0
                          },
                          "operator": "+",
                          "left": {
                            "type": "StringLiteral",
                            "span": {
                              "start": 787,
                              "end": 790,
                              "ctxt": 0
                            },
                            "value": "x",
                            "raw": "\"x\""
                          },
                          "right": {
                            "type": "StringLiteral",
                            "span": {
                              "start": 793,
                              "end": 795,
                              "ctxt": 0
                            },
                            "value": "",
                            "raw": "\"\""
                          }
                        }
                      },
                      "value": {
                        "type": "Identifier",
                        "span": {
                          "start": 798,
                          "end": 799,
                          "ctxt": 0
                        },
                        "value": "x",
                        "optional": false,
                        "typeAnnotation": null
                      }
                    }
                  ],
                  "optional": false,
                  "typeAnnotation": null
                },
                "right": {
                  "type": "NumericLiteral",
                  "span": {
                    "start": 804,
                    "end": 805,
                    "ctxt": 0
                  },
                  "value": 0.0,
                  "raw": "0"
                }
              }
            }
          }
        ]
      },
      "generator": false,
      "async": false,
      "typeParameters": null,
      "returnType": null
    },
    {
      "type": "TsTypeAliasDeclaration",
      "span": {
        "start": 843,
        "end": 877,
        "ctxt": 0
      },
      "declare": false,
      "id": {
        "type": "Identifier",
        "span": {
          "start": 848,
          "end": 856,
          "ctxt": 0
        },
        "value": "KeyValue",
        "optional": false
      },
      "typeParams": null,
      "typeAnnotation": {
        "type": "TsTupleType",
        "span": {
          "start": 859,
          "end": 876,
          "ctxt": 0
        },
        "elemTypes": [
          {
            "type": "TsTupleElement",
            "span": {
              "start": 860,
              "end": 866,
              "ctxt": 0
            },
            "label": null,
            "ty": {
              "type": "TsKeywordType",
              "span": {
                "start": 860,
                "end": 866,
                "ctxt": 0
              },
              "kind": "string"
            }
          },
          {
            "type": "TsTupleElement",
            "span": {
              "start": 868,
              "end": 875,
              "ctxt": 0
            },
            "label": null,
            "ty": {
              "type": "TsOptionalType",
              "span": {
                "start": 868,
                "end": 875,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 868,
                  "end": 874,
                  "ctxt": 0
                },
                "kind": "string"
              }
            }
          }
        ]
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 878,
        "end": 915,
        "ctxt": 0
      },
      "kind": "let",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 882,
            "end": 914,
            "ctxt": 0
          },
          "id": {
            "type": "ArrayPattern",
            "span": {
              "start": 882,
              "end": 894,
              "ctxt": 0
            },
            "elements": [
              {
                "type": "Identifier",
                "span": {
                  "start": 883,
                  "end": 886,
                  "ctxt": 0
                },
                "value": "key",
                "optional": false,
                "typeAnnotation": null
              },
              {
                "type": "Identifier",
                "span": {
                  "start": 888,
                  "end": 893,
                  "ctxt": 0
                },
                "value": "value",
                "optional": false,
                "typeAnnotation": null
              }
            ],
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 894,
                "end": 904,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 896,
                  "end": 904,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 896,
                    "end": 904,
                    "ctxt": 0
                  },
                  "value": "KeyValue",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": {
            "type": "ArrayExpression",
            "span": {
              "start": 907,
              "end": 914,
              "ctxt": 0
            },
            "elements": [
              {
                "spread": null,
                "expression": {
                  "type": "StringLiteral",
                  "span": {
                    "start": 908,
                    "end": 913,
                    "ctxt": 0
                  },
                  "value": "foo",
                  "raw": "\"foo\""
                }
              }
            ]
          },
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 916,
        "end": 936,
        "ctxt": 0
      },
      "expression": {
        "type": "CallExpression",
        "span": {
          "start": 916,
          "end": 935,
          "ctxt": 0
        },
        "callee": {
          "type": "MemberExpression",
          "span": {
            "start": 916,
            "end": 933,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 916,
              "end": 921,
              "ctxt": 0
            },
            "value": "value",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 922,
              "end": 933,
              "ctxt": 0
            },
            "value": "toUpperCase",
            "optional": false
          }
        },
        "arguments": [],
        "typeArguments": null
      }
    }
  ],
  "interpreter": null
}