{
  "type": "Script",
  "span": {
    "start": 64,
    "end": 566,
    "ctxt": 0
  },
  "body": [
    {
      "type": "TsInterfaceDeclaration",
      "span": {
        "start": 64,
        "end": 95,
        "ctxt": 0
      },
      "id": {
        "type": "Identifier",
        "span": {
          "start": 74,
          "end": 78,
          "ctxt": 0
        },
        "value": "Base",
        "optional": false
      },
      "declare": false,
      "typeParams": null,
      "extends": [],
      "body": {
        "type": "TsInterfaceBody",
        "span": {
          "start": 79,
          "end": 95,
          "ctxt": 0
        },
        "body": [
          {
            "type": "TsPropertySignature",
            "span": {
              "start": 81,
              "end": 93,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 81,
                "end": 84,
                "ctxt": 0
              },
              "value": "foo",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "init": null,
            "params": [],
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 84,
                "end": 92,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 86,
                  "end": 92,
                  "ctxt": 0
                },
                "kind": "string"
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "TsInterfaceDeclaration",
      "span": {
        "start": 97,
        "end": 144,
        "ctxt": 0
      },
      "id": {
        "type": "Identifier",
        "span": {
          "start": 107,
          "end": 114,
          "ctxt": 0
        },
        "value": "Derived",
        "optional": false
      },
      "declare": false,
      "typeParams": null,
      "extends": [
        {
          "type": "TsExpressionWithTypeArguments",
          "span": {
            "start": 123,
            "end": 127,
            "ctxt": 0
          },
          "expression": {
            "type": "Identifier",
            "span": {
              "start": 123,
              "end": 127,
              "ctxt": 0
            },
            "value": "Base",
            "optional": false
          },
          "typeArguments": null
        }
      ],
      "body": {
        "type": "TsInterfaceBody",
        "span": {
          "start": 128,
          "end": 144,
          "ctxt": 0
        },
        "body": [
          {
            "type": "TsPropertySignature",
            "span": {
              "start": 130,
              "end": 142,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 130,
                "end": 133,
                "ctxt": 0
              },
              "value": "bar",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "init": null,
            "params": [],
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 133,
                "end": 141,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 135,
                  "end": 141,
                  "ctxt": 0
                },
                "kind": "string"
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "TsInterfaceDeclaration",
      "span": {
        "start": 146,
        "end": 197,
        "ctxt": 0
      },
      "id": {
        "type": "Identifier",
        "span": {
          "start": 156,
          "end": 164,
          "ctxt": 0
        },
        "value": "Derived2",
        "optional": false
      },
      "declare": false,
      "typeParams": null,
      "extends": [
        {
          "type": "TsExpressionWithTypeArguments",
          "span": {
            "start": 173,
            "end": 180,
            "ctxt": 0
          },
          "expression": {
            "type": "Identifier",
            "span": {
              "start": 173,
              "end": 180,
              "ctxt": 0
            },
            "value": "Derived",
            "optional": false
          },
          "typeArguments": null
        }
      ],
      "body": {
        "type": "TsInterfaceBody",
        "span": {
          "start": 181,
          "end": 197,
          "ctxt": 0
        },
        "body": [
          {
            "type": "TsPropertySignature",
            "span": {
              "start": 183,
              "end": 195,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 183,
                "end": 186,
                "ctxt": 0
              },
              "value": "baz",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "init": null,
            "params": [],
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 186,
                "end": 194,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 188,
                  "end": 194,
                  "ctxt": 0
                },
                "kind": "string"
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "ClassDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 207,
          "end": 208,
          "ctxt": 0
        },
        "value": "A",
        "optional": false
      },
      "declare": false,
      "span": {
        "start": 201,
        "end": 240,
        "ctxt": 0
      },
      "decorators": [],
      "body": [
        {
          "type": "TsIndexSignature",
          "params": [
            {
              "type": "Identifier",
              "span": {
                "start": 217,
                "end": 226,
                "ctxt": 0
              },
              "value": "x",
              "optional": false,
              "typeAnnotation": {
                "type": "TsTypeAnnotation",
                "span": {
                  "start": 218,
                  "end": 226,
                  "ctxt": 0
                },
                "typeAnnotation": {
                  "type": "TsKeywordType",
                  "span": {
                    "start": 220,
                    "end": 226,
                    "ctxt": 0
                  },
                  "kind": "string"
                }
              }
            }
          ],
          "typeAnnotation": {
            "type": "TsTypeAnnotation",
            "span": {
              "start": 227,
              "end": 236,
              "ctxt": 0
            },
            "typeAnnotation": {
              "type": "TsTypeReference",
              "span": {
                "start": 229,
                "end": 236,
                "ctxt": 0
              },
              "typeName": {
                "type": "Identifier",
                "span": {
                  "start": 229,
                  "end": 236,
                  "ctxt": 0
                },
                "value": "Derived",
                "optional": false
              },
              "typeParams": null
            }
          },
          "readonly": false,
          "static": false,
          "span": {
            "start": 216,
            "end": 237,
            "ctxt": 0
          }
        }
      ],
      "superClass": null,
      "isAbstract": false,
      "typeParams": null,
      "superTypeParams": null,
      "implements": []
    },
    {
      "type": "ClassDeclaration",
      "identifier": {
        "type": "Identifier",
        "span": {
          "start": 250,
          "end": 251,
          "ctxt": 0
        },
        "value": "B",
        "optional": false
      },
      "declare": false,
      "span": {
        "start": 244,
        "end": 301,
        "ctxt": 0
      },
      "decorators": [],
      "body": [
        {
          "type": "TsIndexSignature",
          "params": [
            {
              "type": "Identifier",
              "span": {
                "start": 270,
                "end": 279,
                "ctxt": 0
              },
              "value": "x",
              "optional": false,
              "typeAnnotation": {
                "type": "TsTypeAnnotation",
                "span": {
                  "start": 271,
                  "end": 279,
                  "ctxt": 0
                },
                "typeAnnotation": {
                  "type": "TsKeywordType",
                  "span": {
                    "start": 273,
                    "end": 279,
                    "ctxt": 0
                  },
                  "kind": "string"
                }
              }
            }
          ],
          "typeAnnotation": {
            "type": "TsTypeAnnotation",
            "span": {
              "start": 280,
              "end": 288,
              "ctxt": 0
            },
            "typeAnnotation": {
              "type": "TsKeywordType",
              "span": {
                "start": 282,
                "end": 288,
                "ctxt": 0
              },
              "kind": "string"
            }
          },
          "readonly": false,
          "static": false,
          "span": {
            "start": 269,
            "end": 289,
            "ctxt": 0
          }
        }
      ],
      "superClass": {
        "type": "Identifier",
        "span": {
          "start": 260,
          "end": 261,
          "ctxt": 0
        },
        "value": "A",
        "optional": false
      },
      "isAbstract": false,
      "typeParams": null,
      "superTypeParams": null,
      "implements": []
    },
    {
      "type": "TsModuleDeclaration",
      "span": {
        "start": 305,
        "end": 566,
        "ctxt": 0
      },
      "declare": false,
      "global": false,
      "id": {
        "type": "Identifier",
        "span": {
          "start": 312,
          "end": 320,
          "ctxt": 0
        },
        "value": "Generics",
        "optional": false
      },
      "body": {
        "type": "TsModuleBlock",
        "span": {
          "start": 321,
          "end": 566,
          "ctxt": 0
        },
        "body": [
          {
            "type": "ClassDeclaration",
            "identifier": {
              "type": "Identifier",
              "span": {
                "start": 334,
                "end": 335,
                "ctxt": 0
              },
              "value": "A",
              "optional": false
            },
            "declare": false,
            "span": {
              "start": 328,
              "end": 388,
              "ctxt": 0
            },
            "decorators": [],
            "body": [
              {
                "type": "TsIndexSignature",
                "params": [
                  {
                    "type": "Identifier",
                    "span": {
                      "start": 367,
                      "end": 376,
                      "ctxt": 0
                    },
                    "value": "x",
                    "optional": false,
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 368,
                        "end": 376,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 370,
                          "end": 376,
                          "ctxt": 0
                        },
                        "kind": "string"
                      }
                    }
                  }
                ],
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 377,
                    "end": 380,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsTypeReference",
                    "span": {
                      "start": 379,
                      "end": 380,
                      "ctxt": 0
                    },
                    "typeName": {
                      "type": "Identifier",
                      "span": {
                        "start": 379,
                        "end": 380,
                        "ctxt": 0
                      },
                      "value": "T",
                      "optional": false
                    },
                    "typeParams": null
                  }
                },
                "readonly": false,
                "static": false,
                "span": {
                  "start": 366,
                  "end": 381,
                  "ctxt": 0
                }
              }
            ],
            "superClass": null,
            "isAbstract": false,
            "typeParams": {
              "type": "TsTypeParameterDeclaration",
              "span": {
                "start": 335,
                "end": 354,
                "ctxt": 0
              },
              "parameters": [
                {
                  "type": "TsTypeParameter",
                  "span": {
                    "start": 336,
                    "end": 353,
                    "ctxt": 0
                  },
                  "name": {
                    "type": "Identifier",
                    "span": {
                      "start": 336,
                      "end": 337,
                      "ctxt": 0
                    },
                    "value": "T",
                    "optional": false
                  },
                  "constraint": {
                    "type": "TsTypeReference",
                    "span": {
                      "start": 346,
                      "end": 353,
                      "ctxt": 0
                    },
                    "typeName": {
                      "type": "Identifier",
                      "span": {
                        "start": 346,
                        "end": 353,
                        "ctxt": 0
                      },
                      "value": "Derived",
                      "optional": false
                    },
                    "typeParams": null
                  },
                  "default": null
                }
              ]
            },
            "superTypeParams": null,
            "implements": []
          },
          {
            "type": "ClassDeclaration",
            "identifier": {
              "type": "Identifier",
              "span": {
                "start": 402,
                "end": 403,
                "ctxt": 0
              },
              "value": "B",
              "optional": false
            },
            "declare": false,
            "span": {
              "start": 396,
              "end": 467,
              "ctxt": 0
            },
            "decorators": [],
            "body": [
              {
                "type": "TsIndexSignature",
                "params": [
                  {
                    "type": "Identifier",
                    "span": {
                      "start": 432,
                      "end": 441,
                      "ctxt": 0
                    },
                    "value": "x",
                    "optional": false,
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 433,
                        "end": 441,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 435,
                          "end": 441,
                          "ctxt": 0
                        },
                        "kind": "string"
                      }
                    }
                  }
                ],
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 442,
                    "end": 450,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 444,
                      "end": 450,
                      "ctxt": 0
                    },
                    "kind": "string"
                  }
                },
                "readonly": false,
                "static": false,
                "span": {
                  "start": 431,
                  "end": 451,
                  "ctxt": 0
                }
              }
            ],
            "superClass": {
              "type": "Identifier",
              "span": {
                "start": 412,
                "end": 413,
                "ctxt": 0
              },
              "value": "A",
              "optional": false
            },
            "isAbstract": false,
            "typeParams": null,
            "superTypeParams": {
              "type": "TsTypeParameterInstantiation",
              "span": {
                "start": 413,
                "end": 419,
                "ctxt": 0
              },
              "params": [
                {
                  "type": "TsTypeReference",
                  "span": {
                    "start": 414,
                    "end": 418,
                    "ctxt": 0
                  },
                  "typeName": {
                    "type": "Identifier",
                    "span": {
                      "start": 414,
                      "end": 418,
                      "ctxt": 0
                    },
                    "value": "Base",
                    "optional": false
                  },
                  "typeParams": null
                }
              ]
            },
            "implements": []
          },
          {
            "type": "ClassDeclaration",
            "identifier": {
              "type": "Identifier",
              "span": {
                "start": 481,
                "end": 483,
                "ctxt": 0
              },
              "value": "B3",
              "optional": false
            },
            "declare": false,
            "span": {
              "start": 475,
              "end": 563,
              "ctxt": 0
            },
            "decorators": [],
            "body": [
              {
                "type": "TsIndexSignature",
                "params": [
                  {
                    "type": "Identifier",
                    "span": {
                      "start": 528,
                      "end": 537,
                      "ctxt": 0
                    },
                    "value": "x",
                    "optional": false,
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 529,
                        "end": 537,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 531,
                          "end": 537,
                          "ctxt": 0
                        },
                        "kind": "string"
                      }
                    }
                  }
                ],
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 538,
                    "end": 546,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 540,
                      "end": 546,
                      "ctxt": 0
                    },
                    "kind": "string"
                  }
                },
                "readonly": false,
                "static": false,
                "span": {
                  "start": 527,
                  "end": 547,
                  "ctxt": 0
                }
              }
            ],
            "superClass": {
              "type": "Identifier",
              "span": {
                "start": 511,
                "end": 512,
                "ctxt": 0
              },
              "value": "A",
              "optional": false
            },
            "isAbstract": false,
            "typeParams": {
              "type": "TsTypeParameterDeclaration",
              "span": {
                "start": 483,
                "end": 502,
                "ctxt": 0
              },
              "parameters": [
                {
                  "type": "TsTypeParameter",
                  "span": {
                    "start": 484,
                    "end": 501,
                    "ctxt": 0
                  },
                  "name": {
                    "type": "Identifier",
                    "span": {
                      "start": 484,
                      "end": 485,
                      "ctxt": 0
                    },
                    "value": "T",
                    "optional": false
                  },
                  "constraint": {
                    "type": "TsTypeReference",
                    "span": {
                      "start": 494,
                      "end": 501,
                      "ctxt": 0
                    },
                    "typeName": {
                      "type": "Identifier",
                      "span": {
                        "start": 494,
                        "end": 501,
                        "ctxt": 0
                      },
                      "value": "Derived",
                      "optional": false
                    },
                    "typeParams": null
                  },
                  "default": null
                }
              ]
            },
            "superTypeParams": {
              "type": "TsTypeParameterInstantiation",
              "span": {
                "start": 512,
                "end": 515,
                "ctxt": 0
              },
              "params": [
                {
                  "type": "TsTypeReference",
                  "span": {
                    "start": 513,
                    "end": 514,
                    "ctxt": 0
                  },
                  "typeName": {
                    "type": "Identifier",
                    "span": {
                      "start": 513,
                      "end": 514,
                      "ctxt": 0
                    },
                    "value": "T",
                    "optional": false
                  },
                  "typeParams": null
                }
              ]
            },
            "implements": []
          }
        ]
      }
    }
  ],
  "interpreter": null
}