{
  "type": "Script",
  "span": {
    "start": 60,
    "end": 609,
    "ctxt": 0
  },
  "body": [
    {
      "type": "TsInterfaceDeclaration",
      "span": {
        "start": 60,
        "end": 242,
        "ctxt": 0
      },
      "id": {
        "type": "Identifier",
        "span": {
          "start": 70,
          "end": 71,
          "ctxt": 0
        },
        "value": "A",
        "optional": false
      },
      "declare": false,
      "typeParams": null,
      "extends": [],
      "body": {
        "type": "TsInterfaceBody",
        "span": {
          "start": 72,
          "end": 242,
          "ctxt": 0
        },
        "body": [
          {
            "type": "TsPropertySignature",
            "span": {
              "start": 78,
              "end": 203,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 78,
                "end": 81,
                "ctxt": 0
              },
              "value": "foo",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "init": null,
            "params": [],
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 81,
                "end": 203,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 83,
                  "end": 203,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsMethodSignature",
                    "span": {
                      "start": 93,
                      "end": 156,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 93,
                        "end": 96,
                        "ctxt": 0
                      },
                      "value": "bar",
                      "optional": false
                    },
                    "computed": false,
                    "optional": false,
                    "params": [],
                    "typeAnn": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 98,
                        "end": 156,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsTypeLiteral",
                        "span": {
                          "start": 100,
                          "end": 156,
                          "ctxt": 0
                        },
                        "members": [
                          {
                            "type": "TsPropertySignature",
                            "span": {
                              "start": 114,
                              "end": 146,
                              "ctxt": 0
                            },
                            "readonly": false,
                            "key": {
                              "type": "Identifier",
                              "span": {
                                "start": 114,
                                "end": 117,
                                "ctxt": 0
                              },
                              "value": "baz",
                              "optional": false
                            },
                            "computed": false,
                            "optional": false,
                            "init": null,
                            "params": [],
                            "typeAnnotation": {
                              "type": "TsTypeAnnotation",
                              "span": {
                                "start": 117,
                                "end": 146,
                                "ctxt": 0
                              },
                              "typeAnnotation": {
                                "type": "TsUnionType",
                                "span": {
                                  "start": 119,
                                  "end": 146,
                                  "ctxt": 0
                                },
                                "types": [
                                  {
                                    "type": "TsLiteralType",
                                    "span": {
                                      "start": 119,
                                      "end": 120,
                                      "ctxt": 0
                                    },
                                    "literal": {
                                      "type": "NumericLiteral",
                                      "span": {
                                        "start": 119,
                                        "end": 120,
                                        "ctxt": 0
                                      },
                                      "value": 0.0
                                    }
                                  },
                                  {
                                    "type": "TsLiteralType",
                                    "span": {
                                      "start": 123,
                                      "end": 124,
                                      "ctxt": 0
                                    },
                                    "literal": {
                                      "type": "NumericLiteral",
                                      "span": {
                                        "start": 123,
                                        "end": 124,
                                        "ctxt": 0
                                      },
                                      "value": 1.0
                                    }
                                  },
                                  {
                                    "type": "TsLiteralType",
                                    "span": {
                                      "start": 127,
                                      "end": 129,
                                      "ctxt": 0
                                    },
                                    "literal": {
                                      "type": "NumericLiteral",
                                      "span": {
                                        "start": 127,
                                        "end": 129,
                                        "ctxt": 0
                                      },
                                      "value": 42.0
                                    }
                                  },
                                  {
                                    "type": "TsKeywordType",
                                    "span": {
                                      "start": 132,
                                      "end": 141,
                                      "ctxt": 0
                                    },
                                    "kind": "undefined"
                                  },
                                  {
                                    "type": "TsLiteralType",
                                    "span": {
                                      "start": 144,
                                      "end": 146,
                                      "ctxt": 0
                                    },
                                    "literal": {
                                      "type": "StringLiteral",
                                      "span": {
                                        "start": 144,
                                        "end": 146,
                                        "ctxt": 0
                                      },
                                      "value": "",
                                      "hasEscape": false,
                                      "kind": {
                                        "type": "normal",
                                        "containsQuote": true
                                      }
                                    }
                                  }
                                ]
                              }
                            },
                            "typeParams": null
                          }
                        ]
                      }
                    },
                    "typeParams": null
                  },
                  {
                    "type": "TsPropertySignature",
                    "span": {
                      "start": 165,
                      "end": 197,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 165,
                        "end": 168,
                        "ctxt": 0
                      },
                      "value": "baz",
                      "optional": false
                    },
                    "computed": false,
                    "optional": false,
                    "init": null,
                    "params": [],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 168,
                        "end": 197,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsUnionType",
                        "span": {
                          "start": 170,
                          "end": 197,
                          "ctxt": 0
                        },
                        "types": [
                          {
                            "type": "TsLiteralType",
                            "span": {
                              "start": 170,
                              "end": 171,
                              "ctxt": 0
                            },
                            "literal": {
                              "type": "NumericLiteral",
                              "span": {
                                "start": 170,
                                "end": 171,
                                "ctxt": 0
                              },
                              "value": 0.0
                            }
                          },
                          {
                            "type": "TsLiteralType",
                            "span": {
                              "start": 174,
                              "end": 175,
                              "ctxt": 0
                            },
                            "literal": {
                              "type": "NumericLiteral",
                              "span": {
                                "start": 174,
                                "end": 175,
                                "ctxt": 0
                              },
                              "value": 1.0
                            }
                          },
                          {
                            "type": "TsLiteralType",
                            "span": {
                              "start": 178,
                              "end": 180,
                              "ctxt": 0
                            },
                            "literal": {
                              "type": "NumericLiteral",
                              "span": {
                                "start": 178,
                                "end": 180,
                                "ctxt": 0
                              },
                              "value": 42.0
                            }
                          },
                          {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 183,
                              "end": 192,
                              "ctxt": 0
                            },
                            "kind": "undefined"
                          },
                          {
                            "type": "TsLiteralType",
                            "span": {
                              "start": 195,
                              "end": 197,
                              "ctxt": 0
                            },
                            "literal": {
                              "type": "StringLiteral",
                              "span": {
                                "start": 195,
                                "end": 197,
                                "ctxt": 0
                              },
                              "value": "",
                              "hasEscape": false,
                              "kind": {
                                "type": "normal",
                                "containsQuote": true
                              }
                            }
                          }
                        ]
                      }
                    },
                    "typeParams": null
                  }
                ]
              }
            },
            "typeParams": null
          },
          {
            "type": "TsPropertySignature",
            "span": {
              "start": 208,
              "end": 240,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 208,
                "end": 211,
                "ctxt": 0
              },
              "value": "baz",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "init": null,
            "params": [],
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 211,
                "end": 240,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsUnionType",
                "span": {
                  "start": 213,
                  "end": 240,
                  "ctxt": 0
                },
                "types": [
                  {
                    "type": "TsLiteralType",
                    "span": {
                      "start": 213,
                      "end": 214,
                      "ctxt": 0
                    },
                    "literal": {
                      "type": "NumericLiteral",
                      "span": {
                        "start": 213,
                        "end": 214,
                        "ctxt": 0
                      },
                      "value": 0.0
                    }
                  },
                  {
                    "type": "TsLiteralType",
                    "span": {
                      "start": 217,
                      "end": 218,
                      "ctxt": 0
                    },
                    "literal": {
                      "type": "NumericLiteral",
                      "span": {
                        "start": 217,
                        "end": 218,
                        "ctxt": 0
                      },
                      "value": 1.0
                    }
                  },
                  {
                    "type": "TsLiteralType",
                    "span": {
                      "start": 221,
                      "end": 223,
                      "ctxt": 0
                    },
                    "literal": {
                      "type": "NumericLiteral",
                      "span": {
                        "start": 221,
                        "end": 223,
                        "ctxt": 0
                      },
                      "value": 42.0
                    }
                  },
                  {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 226,
                      "end": 235,
                      "ctxt": 0
                    },
                    "kind": "undefined"
                  },
                  {
                    "type": "TsLiteralType",
                    "span": {
                      "start": 238,
                      "end": 240,
                      "ctxt": 0
                    },
                    "literal": {
                      "type": "StringLiteral",
                      "span": {
                        "start": 238,
                        "end": 240,
                        "ctxt": 0
                      },
                      "value": "",
                      "hasEscape": false,
                      "kind": {
                        "type": "normal",
                        "containsQuote": true
                      }
                    }
                  }
                ]
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 244,
        "end": 267,
        "ctxt": 0
      },
      "kind": "const",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 258,
            "end": 267,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 258,
              "end": 264,
              "ctxt": 0
            },
            "value": "result",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 264,
                "end": 267,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 266,
                  "end": 267,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 266,
                    "end": 267,
                    "ctxt": 0
                  },
                  "value": "A",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 268,
        "end": 286,
        "ctxt": 0
      },
      "kind": "const",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 282,
            "end": 286,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 282,
              "end": 283,
              "ctxt": 0
            },
            "value": "a",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 283,
                "end": 286,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 285,
                  "end": 286,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 285,
                    "end": 286,
                    "ctxt": 0
                  },
                  "value": "A",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 287,
        "end": 305,
        "ctxt": 0
      },
      "kind": "const",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 301,
            "end": 305,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 301,
              "end": 302,
              "ctxt": 0
            },
            "value": "b",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 302,
                "end": 305,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 304,
                  "end": 305,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 304,
                    "end": 305,
                    "ctxt": 0
                  },
                  "value": "A",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 306,
        "end": 324,
        "ctxt": 0
      },
      "kind": "const",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 320,
            "end": 324,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 320,
              "end": 321,
              "ctxt": 0
            },
            "value": "c",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 321,
                "end": 324,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 323,
                  "end": 324,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 323,
                    "end": 324,
                    "ctxt": 0
                  },
                  "value": "A",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 326,
        "end": 346,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 326,
          "end": 346,
          "ctxt": 0
        },
        "operator": "&&=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 326,
            "end": 331,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 326,
              "end": 327,
              "ctxt": 0
            },
            "value": "a",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 328,
              "end": 331,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 336,
            "end": 346,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 336,
              "end": 342,
              "ctxt": 0
            },
            "value": "result",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 343,
              "end": 346,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 347,
        "end": 367,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 347,
          "end": 367,
          "ctxt": 0
        },
        "operator": "||=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 347,
            "end": 352,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 347,
              "end": 348,
              "ctxt": 0
            },
            "value": "b",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 349,
              "end": 352,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 357,
            "end": 367,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 357,
              "end": 363,
              "ctxt": 0
            },
            "value": "result",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 364,
              "end": 367,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 368,
        "end": 388,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 368,
          "end": 388,
          "ctxt": 0
        },
        "operator": "??=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 368,
            "end": 373,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 368,
              "end": 369,
              "ctxt": 0
            },
            "value": "c",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 370,
              "end": 373,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 378,
            "end": 388,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 378,
              "end": 384,
              "ctxt": 0
            },
            "value": "result",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 385,
              "end": 388,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 390,
        "end": 421,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 390,
          "end": 421,
          "ctxt": 0
        },
        "operator": "&&=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 390,
            "end": 402,
            "ctxt": 0
          },
          "object": {
            "type": "MemberExpression",
            "span": {
              "start": 390,
              "end": 395,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 390,
                "end": 391,
                "ctxt": 0
              },
              "value": "a",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 392,
                "end": 395,
                "ctxt": 0
              },
              "value": "foo",
              "optional": false
            }
          },
          "property": {
            "type": "Computed",
            "span": {
              "start": 395,
              "end": 402,
              "ctxt": 0
            },
            "expression": {
              "type": "StringLiteral",
              "span": {
                "start": 396,
                "end": 401,
                "ctxt": 0
              },
              "value": "baz",
              "hasEscape": false,
              "kind": {
                "type": "normal",
                "containsQuote": true
              }
            }
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 407,
            "end": 421,
            "ctxt": 0
          },
          "object": {
            "type": "MemberExpression",
            "span": {
              "start": 407,
              "end": 417,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 407,
                "end": 413,
                "ctxt": 0
              },
              "value": "result",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 414,
                "end": 417,
                "ctxt": 0
              },
              "value": "foo",
              "optional": false
            }
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 418,
              "end": 421,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 422,
        "end": 453,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 422,
          "end": 453,
          "ctxt": 0
        },
        "operator": "||=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 422,
            "end": 434,
            "ctxt": 0
          },
          "object": {
            "type": "MemberExpression",
            "span": {
              "start": 422,
              "end": 427,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 422,
                "end": 423,
                "ctxt": 0
              },
              "value": "b",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 424,
                "end": 427,
                "ctxt": 0
              },
              "value": "foo",
              "optional": false
            }
          },
          "property": {
            "type": "Computed",
            "span": {
              "start": 427,
              "end": 434,
              "ctxt": 0
            },
            "expression": {
              "type": "StringLiteral",
              "span": {
                "start": 428,
                "end": 433,
                "ctxt": 0
              },
              "value": "baz",
              "hasEscape": false,
              "kind": {
                "type": "normal",
                "containsQuote": true
              }
            }
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 439,
            "end": 453,
            "ctxt": 0
          },
          "object": {
            "type": "MemberExpression",
            "span": {
              "start": 439,
              "end": 449,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 439,
                "end": 445,
                "ctxt": 0
              },
              "value": "result",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 446,
                "end": 449,
                "ctxt": 0
              },
              "value": "foo",
              "optional": false
            }
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 450,
              "end": 453,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 454,
        "end": 485,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 454,
          "end": 485,
          "ctxt": 0
        },
        "operator": "??=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 454,
            "end": 466,
            "ctxt": 0
          },
          "object": {
            "type": "MemberExpression",
            "span": {
              "start": 454,
              "end": 459,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 454,
                "end": 455,
                "ctxt": 0
              },
              "value": "c",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 456,
                "end": 459,
                "ctxt": 0
              },
              "value": "foo",
              "optional": false
            }
          },
          "property": {
            "type": "Computed",
            "span": {
              "start": 459,
              "end": 466,
              "ctxt": 0
            },
            "expression": {
              "type": "StringLiteral",
              "span": {
                "start": 460,
                "end": 465,
                "ctxt": 0
              },
              "value": "baz",
              "hasEscape": false,
              "kind": {
                "type": "normal",
                "containsQuote": true
              }
            }
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 471,
            "end": 485,
            "ctxt": 0
          },
          "object": {
            "type": "MemberExpression",
            "span": {
              "start": 471,
              "end": 481,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 471,
                "end": 477,
                "ctxt": 0
              },
              "value": "result",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 478,
                "end": 481,
                "ctxt": 0
              },
              "value": "foo",
              "optional": false
            }
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 482,
              "end": 485,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 487,
        "end": 527,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 487,
          "end": 527,
          "ctxt": 0
        },
        "operator": "&&=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 487,
            "end": 502,
            "ctxt": 0
          },
          "object": {
            "type": "CallExpression",
            "span": {
              "start": 487,
              "end": 498,
              "ctxt": 0
            },
            "callee": {
              "type": "MemberExpression",
              "span": {
                "start": 487,
                "end": 496,
                "ctxt": 0
              },
              "object": {
                "type": "MemberExpression",
                "span": {
                  "start": 487,
                  "end": 492,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 487,
                    "end": 488,
                    "ctxt": 0
                  },
                  "value": "a",
                  "optional": false
                },
                "property": {
                  "type": "Identifier",
                  "span": {
                    "start": 489,
                    "end": 492,
                    "ctxt": 0
                  },
                  "value": "foo",
                  "optional": false
                }
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 493,
                  "end": 496,
                  "ctxt": 0
                },
                "value": "bar",
                "optional": false
              }
            },
            "arguments": [],
            "typeArguments": null
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 499,
              "end": 502,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 507,
            "end": 527,
            "ctxt": 0
          },
          "object": {
            "type": "CallExpression",
            "span": {
              "start": 507,
              "end": 523,
              "ctxt": 0
            },
            "callee": {
              "type": "MemberExpression",
              "span": {
                "start": 507,
                "end": 521,
                "ctxt": 0
              },
              "object": {
                "type": "MemberExpression",
                "span": {
                  "start": 507,
                  "end": 517,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 507,
                    "end": 513,
                    "ctxt": 0
                  },
                  "value": "result",
                  "optional": false
                },
                "property": {
                  "type": "Identifier",
                  "span": {
                    "start": 514,
                    "end": 517,
                    "ctxt": 0
                  },
                  "value": "foo",
                  "optional": false
                }
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 518,
                  "end": 521,
                  "ctxt": 0
                },
                "value": "bar",
                "optional": false
              }
            },
            "arguments": [],
            "typeArguments": null
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 524,
              "end": 527,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 528,
        "end": 568,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 528,
          "end": 568,
          "ctxt": 0
        },
        "operator": "||=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 528,
            "end": 543,
            "ctxt": 0
          },
          "object": {
            "type": "CallExpression",
            "span": {
              "start": 528,
              "end": 539,
              "ctxt": 0
            },
            "callee": {
              "type": "MemberExpression",
              "span": {
                "start": 528,
                "end": 537,
                "ctxt": 0
              },
              "object": {
                "type": "MemberExpression",
                "span": {
                  "start": 528,
                  "end": 533,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 528,
                    "end": 529,
                    "ctxt": 0
                  },
                  "value": "b",
                  "optional": false
                },
                "property": {
                  "type": "Identifier",
                  "span": {
                    "start": 530,
                    "end": 533,
                    "ctxt": 0
                  },
                  "value": "foo",
                  "optional": false
                }
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 534,
                  "end": 537,
                  "ctxt": 0
                },
                "value": "bar",
                "optional": false
              }
            },
            "arguments": [],
            "typeArguments": null
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 540,
              "end": 543,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 548,
            "end": 568,
            "ctxt": 0
          },
          "object": {
            "type": "CallExpression",
            "span": {
              "start": 548,
              "end": 564,
              "ctxt": 0
            },
            "callee": {
              "type": "MemberExpression",
              "span": {
                "start": 548,
                "end": 562,
                "ctxt": 0
              },
              "object": {
                "type": "MemberExpression",
                "span": {
                  "start": 548,
                  "end": 558,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 548,
                    "end": 554,
                    "ctxt": 0
                  },
                  "value": "result",
                  "optional": false
                },
                "property": {
                  "type": "Identifier",
                  "span": {
                    "start": 555,
                    "end": 558,
                    "ctxt": 0
                  },
                  "value": "foo",
                  "optional": false
                }
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 559,
                  "end": 562,
                  "ctxt": 0
                },
                "value": "bar",
                "optional": false
              }
            },
            "arguments": [],
            "typeArguments": null
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 565,
              "end": 568,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 569,
        "end": 609,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 569,
          "end": 609,
          "ctxt": 0
        },
        "operator": "??=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 569,
            "end": 584,
            "ctxt": 0
          },
          "object": {
            "type": "CallExpression",
            "span": {
              "start": 569,
              "end": 580,
              "ctxt": 0
            },
            "callee": {
              "type": "MemberExpression",
              "span": {
                "start": 569,
                "end": 578,
                "ctxt": 0
              },
              "object": {
                "type": "MemberExpression",
                "span": {
                  "start": 569,
                  "end": 574,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 569,
                    "end": 570,
                    "ctxt": 0
                  },
                  "value": "c",
                  "optional": false
                },
                "property": {
                  "type": "Identifier",
                  "span": {
                    "start": 571,
                    "end": 574,
                    "ctxt": 0
                  },
                  "value": "foo",
                  "optional": false
                }
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 575,
                  "end": 578,
                  "ctxt": 0
                },
                "value": "bar",
                "optional": false
              }
            },
            "arguments": [],
            "typeArguments": null
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 581,
              "end": 584,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        },
        "right": {
          "type": "MemberExpression",
          "span": {
            "start": 589,
            "end": 609,
            "ctxt": 0
          },
          "object": {
            "type": "CallExpression",
            "span": {
              "start": 589,
              "end": 605,
              "ctxt": 0
            },
            "callee": {
              "type": "MemberExpression",
              "span": {
                "start": 589,
                "end": 603,
                "ctxt": 0
              },
              "object": {
                "type": "MemberExpression",
                "span": {
                  "start": 589,
                  "end": 599,
                  "ctxt": 0
                },
                "object": {
                  "type": "Identifier",
                  "span": {
                    "start": 589,
                    "end": 595,
                    "ctxt": 0
                  },
                  "value": "result",
                  "optional": false
                },
                "property": {
                  "type": "Identifier",
                  "span": {
                    "start": 596,
                    "end": 599,
                    "ctxt": 0
                  },
                  "value": "foo",
                  "optional": false
                }
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 600,
                  "end": 603,
                  "ctxt": 0
                },
                "value": "bar",
                "optional": false
              }
            },
            "arguments": [],
            "typeArguments": null
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 606,
              "end": 609,
              "ctxt": 0
            },
            "value": "baz",
            "optional": false
          }
        }
      }
    }
  ],
  "interpreter": null
}