{
  "type": "Script",
  "span": {
    "start": 1,
    "end": 601,
    "ctxt": 0
  },
  "body": [
    {
      "type": "ClassDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 7,
          "end": 11,
          "ctxt": 0
        },
        "value": "Base",
        "optional": false
      },
      "declare": false,
      "span": {
        "start": 1,
        "end": 174,
        "ctxt": 0
      },
      "decorators": [],
      "body": [
        {
          "type": "ClassProperty",
          "span": {
            "start": 18,
            "end": 42,
            "ctxt": 0
          },
          "key": {
            "type": "Identifier",
            "span": {
              "start": 32,
              "end": 33,
              "ctxt": 0
            },
            "value": "x",
            "optional": false
          },
          "value": null,
          "typeAnnotation": {
            "type": "TsTypeAnnotation",
            "span": {
              "start": 33,
              "end": 41,
              "ctxt": 0
            },
            "typeAnnotation": {
              "type": "TsKeywordType",
              "span": {
                "start": 35,
                "end": 41,
                "ctxt": 0
              },
              "kind": "string"
            }
          },
          "isStatic": true,
          "decorators": [],
          "accessibility": "public",
          "isAbstract": false,
          "isOptional": false,
          "isOverride": false,
          "readonly": false,
          "declare": false,
          "definite": false
        },
        {
          "type": "ClassMethod",
          "span": {
            "start": 47,
            "end": 100,
            "ctxt": 0
          },
          "key": {
            "type": "Identifier",
            "span": {
              "start": 61,
              "end": 63,
              "ctxt": 0
            },
            "value": "fn",
            "optional": false
          },
          "function": {
            "params": [],
            "decorators": [],
            "span": {
              "start": 47,
              "end": 100,
              "ctxt": 0
            },
            "body": {
              "type": "BlockStatement",
              "span": {
                "start": 74,
                "end": 100,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "ReturnStatement",
                  "span": {
                    "start": 84,
                    "end": 94,
                    "ctxt": 0
                  },
                  "argument": {
                    "type": "StringLiteral",
                    "span": {
                      "start": 91,
                      "end": 93,
                      "ctxt": 0
                    },
                    "value": "",
                    "raw": "''"
                  }
                }
              ]
            },
            "generator": false,
            "async": false,
            "typeParameters": null,
            "returnType": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 65,
                "end": 73,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 67,
                  "end": 73,
                  "ctxt": 0
                },
                "kind": "string"
              }
            }
          },
          "kind": "method",
          "isStatic": true,
          "accessibility": "public",
          "isAbstract": false,
          "isOptional": false,
          "isOverride": false
        },
        {
          "type": "ClassMethod",
          "span": {
            "start": 106,
            "end": 141,
            "ctxt": 0
          },
          "key": {
            "type": "Identifier",
            "span": {
              "start": 124,
              "end": 125,
              "ctxt": 0
            },
            "value": "a",
            "optional": false
          },
          "function": {
            "params": [],
            "decorators": [],
            "span": {
              "start": 106,
              "end": 141,
              "ctxt": 0
            },
            "body": {
              "type": "BlockStatement",
              "span": {
                "start": 128,
                "end": 141,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "ReturnStatement",
                  "span": {
                    "start": 130,
                    "end": 139,
                    "ctxt": 0
                  },
                  "argument": {
                    "type": "NumericLiteral",
                    "span": {
                      "start": 137,
                      "end": 138,
                      "ctxt": 0
                    },
                    "value": 1.0,
                    "raw": "1"
                  }
                }
              ]
            },
            "generator": false,
            "async": false,
            "typeParameters": null,
            "returnType": null
          },
          "kind": "getter",
          "isStatic": true,
          "accessibility": "public",
          "isAbstract": false,
          "isOptional": false,
          "isOverride": false
        },
        {
          "type": "ClassMethod",
          "span": {
            "start": 146,
            "end": 172,
            "ctxt": 0
          },
          "key": {
            "type": "Identifier",
            "span": {
              "start": 164,
              "end": 165,
              "ctxt": 0
            },
            "value": "a",
            "optional": false
          },
          "function": {
            "params": [
              {
                "type": "Parameter",
                "span": {
                  "start": 166,
                  "end": 167,
                  "ctxt": 0
                },
                "decorators": [],
                "pat": {
                  "type": "Identifier",
                  "span": {
                    "start": 166,
                    "end": 167,
                    "ctxt": 0
                  },
                  "value": "v",
                  "optional": false,
                  "typeAnnotation": null
                }
              }
            ],
            "decorators": [],
            "span": {
              "start": 146,
              "end": 172,
              "ctxt": 0
            },
            "body": {
              "type": "BlockStatement",
              "span": {
                "start": 169,
                "end": 172,
                "ctxt": 0
              },
              "stmts": []
            },
            "generator": false,
            "async": false,
            "typeParameters": null,
            "returnType": null
          },
          "kind": "setter",
          "isStatic": true,
          "accessibility": "public",
          "isAbstract": false,
          "isOptional": false,
          "isOverride": false
        }
      ],
      "superClass": null,
      "isAbstract": false,
      "typeParams": null,
      "superTypeParams": null,
      "implements": []
    },
    {
      "type": "ClassDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 215,
          "end": 222,
          "ctxt": 0
        },
        "value": "Derived",
        "optional": false
      },
      "declare": false,
      "span": {
        "start": 209,
        "end": 403,
        "ctxt": 0
      },
      "decorators": [],
      "body": [
        {
          "type": "ClassProperty",
          "span": {
            "start": 242,
            "end": 267,
            "ctxt": 0
          },
          "key": {
            "type": "Identifier",
            "span": {
              "start": 257,
              "end": 258,
              "ctxt": 0
            },
            "value": "x",
            "optional": false
          },
          "value": null,
          "typeAnnotation": {
            "type": "TsTypeAnnotation",
            "span": {
              "start": 258,
              "end": 266,
              "ctxt": 0
            },
            "typeAnnotation": {
              "type": "TsKeywordType",
              "span": {
                "start": 260,
                "end": 266,
                "ctxt": 0
              },
              "kind": "string"
            }
          },
          "isStatic": true,
          "decorators": [],
          "accessibility": "private",
          "isAbstract": false,
          "isOptional": false,
          "isOverride": false,
          "readonly": false,
          "declare": false,
          "definite": false
        },
        {
          "type": "ClassMethod",
          "span": {
            "start": 273,
            "end": 327,
            "ctxt": 0
          },
          "key": {
            "type": "Identifier",
            "span": {
              "start": 288,
              "end": 290,
              "ctxt": 0
            },
            "value": "fn",
            "optional": false
          },
          "function": {
            "params": [],
            "decorators": [],
            "span": {
              "start": 273,
              "end": 327,
              "ctxt": 0
            },
            "body": {
              "type": "BlockStatement",
              "span": {
                "start": 301,
                "end": 327,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "ReturnStatement",
                  "span": {
                    "start": 311,
                    "end": 321,
                    "ctxt": 0
                  },
                  "argument": {
                    "type": "StringLiteral",
                    "span": {
                      "start": 318,
                      "end": 320,
                      "ctxt": 0
                    },
                    "value": "",
                    "raw": "''"
                  }
                }
              ]
            },
            "generator": false,
            "async": false,
            "typeParameters": null,
            "returnType": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 292,
                "end": 300,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 294,
                  "end": 300,
                  "ctxt": 0
                },
                "kind": "string"
              }
            }
          },
          "kind": "method",
          "isStatic": true,
          "accessibility": "private",
          "isAbstract": false,
          "isOptional": false,
          "isOverride": false
        },
        {
          "type": "ClassMethod",
          "span": {
            "start": 333,
            "end": 369,
            "ctxt": 0
          },
          "key": {
            "type": "Identifier",
            "span": {
              "start": 352,
              "end": 353,
              "ctxt": 0
            },
            "value": "a",
            "optional": false
          },
          "function": {
            "params": [],
            "decorators": [],
            "span": {
              "start": 333,
              "end": 369,
              "ctxt": 0
            },
            "body": {
              "type": "BlockStatement",
              "span": {
                "start": 356,
                "end": 369,
                "ctxt": 0
              },
              "stmts": [
                {
                  "type": "ReturnStatement",
                  "span": {
                    "start": 358,
                    "end": 367,
                    "ctxt": 0
                  },
                  "argument": {
                    "type": "NumericLiteral",
                    "span": {
                      "start": 365,
                      "end": 366,
                      "ctxt": 0
                    },
                    "value": 1.0,
                    "raw": "1"
                  }
                }
              ]
            },
            "generator": false,
            "async": false,
            "typeParameters": null,
            "returnType": null
          },
          "kind": "getter",
          "isStatic": true,
          "accessibility": "private",
          "isAbstract": false,
          "isOptional": false,
          "isOverride": false
        },
        {
          "type": "ClassMethod",
          "span": {
            "start": 374,
            "end": 401,
            "ctxt": 0
          },
          "key": {
            "type": "Identifier",
            "span": {
              "start": 393,
              "end": 394,
              "ctxt": 0
            },
            "value": "a",
            "optional": false
          },
          "function": {
            "params": [
              {
                "type": "Parameter",
                "span": {
                  "start": 395,
                  "end": 396,
                  "ctxt": 0
                },
                "decorators": [],
                "pat": {
                  "type": "Identifier",
                  "span": {
                    "start": 395,
                    "end": 396,
                    "ctxt": 0
                  },
                  "value": "v",
                  "optional": false,
                  "typeAnnotation": null
                }
              }
            ],
            "decorators": [],
            "span": {
              "start": 374,
              "end": 401,
              "ctxt": 0
            },
            "body": {
              "type": "BlockStatement",
              "span": {
                "start": 398,
                "end": 401,
                "ctxt": 0
              },
              "stmts": []
            },
            "generator": false,
            "async": false,
            "typeParameters": null,
            "returnType": null
          },
          "kind": "setter",
          "isStatic": true,
          "accessibility": "private",
          "isAbstract": false,
          "isOptional": false,
          "isOverride": false
        }
      ],
      "superClass": {
        "type": "Identifier",
        "span": {
          "start": 231,
          "end": 235,
          "ctxt": 0
        },
        "value": "Base",
        "optional": false
      },
      "isAbstract": false,
      "typeParams": null,
      "superTypeParams": null,
      "implements": []
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 405,
        "end": 420,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 409,
            "end": 419,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 409,
              "end": 410,
              "ctxt": 0
            },
            "value": "r",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "MemberExpression",
            "span": {
              "start": 413,
              "end": 419,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 413,
                "end": 417,
                "ctxt": 0
              },
              "value": "Base",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 418,
                "end": 419,
                "ctxt": 0
              },
              "value": "x",
              "optional": false
            }
          },
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 427,
        "end": 446,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 431,
            "end": 445,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 431,
              "end": 433,
              "ctxt": 0
            },
            "value": "r2",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "MemberExpression",
            "span": {
              "start": 436,
              "end": 445,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 436,
                "end": 443,
                "ctxt": 0
              },
              "value": "Derived",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 444,
                "end": 445,
                "ctxt": 0
              },
              "value": "x",
              "optional": false
            }
          },
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 457,
        "end": 476,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 461,
            "end": 475,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 461,
              "end": 463,
              "ctxt": 0
            },
            "value": "r3",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "CallExpression",
            "span": {
              "start": 466,
              "end": 475,
              "ctxt": 0
            },
            "callee": {
              "type": "MemberExpression",
              "span": {
                "start": 466,
                "end": 473,
                "ctxt": 0
              },
              "object": {
                "type": "Identifier",
                "span": {
                  "start": 466,
                  "end": 470,
                  "ctxt": 0
                },
                "value": "Base",
                "optional": false
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 471,
                  "end": 473,
                  "ctxt": 0
                },
                "value": "fn",
                "optional": false
              }
            },
            "arguments": [],
            "typeArguments": null
          },
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 483,
        "end": 505,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 487,
            "end": 504,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 487,
              "end": 489,
              "ctxt": 0
            },
            "value": "r4",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "CallExpression",
            "span": {
              "start": 492,
              "end": 504,
              "ctxt": 0
            },
            "callee": {
              "type": "MemberExpression",
              "span": {
                "start": 492,
                "end": 502,
                "ctxt": 0
              },
              "object": {
                "type": "Identifier",
                "span": {
                  "start": 492,
                  "end": 499,
                  "ctxt": 0
                },
                "value": "Derived",
                "optional": false
              },
              "property": {
                "type": "Identifier",
                "span": {
                  "start": 500,
                  "end": 502,
                  "ctxt": 0
                },
                "value": "fn",
                "optional": false
              }
            },
            "arguments": [],
            "typeArguments": null
          },
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 516,
        "end": 532,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 520,
            "end": 531,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 520,
              "end": 522,
              "ctxt": 0
            },
            "value": "r5",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "MemberExpression",
            "span": {
              "start": 525,
              "end": 531,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 525,
                "end": 529,
                "ctxt": 0
              },
              "value": "Base",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 530,
                "end": 531,
                "ctxt": 0
              },
              "value": "a",
              "optional": false
            }
          },
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 539,
        "end": 550,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 539,
          "end": 549,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 539,
            "end": 545,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 539,
              "end": 543,
              "ctxt": 0
            },
            "value": "Base",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 544,
              "end": 545,
              "ctxt": 0
            },
            "value": "a",
            "optional": false
          }
        },
        "right": {
          "type": "NumericLiteral",
          "span": {
            "start": 548,
            "end": 549,
            "ctxt": 0
          },
          "value": 2.0,
          "raw": "2"
        }
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 558,
        "end": 577,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 562,
            "end": 576,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 562,
              "end": 564,
              "ctxt": 0
            },
            "value": "r6",
            "optional": false,
            "typeAnnotation": null
          },
          "init": {
            "type": "MemberExpression",
            "span": {
              "start": 567,
              "end": 576,
              "ctxt": 0
            },
            "object": {
              "type": "Identifier",
              "span": {
                "start": 567,
                "end": 574,
                "ctxt": 0
              },
              "value": "Derived",
              "optional": false
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 575,
                "end": 576,
                "ctxt": 0
              },
              "value": "a",
              "optional": false
            }
          },
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 587,
        "end": 601,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 587,
          "end": 600,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "MemberExpression",
          "span": {
            "start": 587,
            "end": 596,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 587,
              "end": 594,
              "ctxt": 0
            },
            "value": "Derived",
            "optional": false
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 595,
              "end": 596,
              "ctxt": 0
            },
            "value": "a",
            "optional": false
          }
        },
        "right": {
          "type": "NumericLiteral",
          "span": {
            "start": 599,
            "end": 600,
            "ctxt": 0
          },
          "value": 2.0,
          "raw": "2"
        }
      }
    }
  ],
  "interpreter": null
}