{
  "type": "Script",
  "span": {
    "start": 112,
    "end": 963,
    "ctxt": 0
  },
  "body": [
    {
      "type": "TsInterfaceDeclaration",
      "span": {
        "start": 112,
        "end": 153,
        "ctxt": 0
      },
      "id": {
        "type": "Identifier",
        "span": {
          "start": 122,
          "end": 123,
          "ctxt": 0
        },
        "value": "T",
        "optional": false
      },
      "declare": false,
      "typeParams": null,
      "extends": [],
      "body": {
        "type": "TsInterfaceBody",
        "span": {
          "start": 124,
          "end": 153,
          "ctxt": 0
        },
        "body": [
          {
            "type": "TsMethodSignature",
            "span": {
              "start": 131,
              "end": 150,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 131,
                "end": 132,
                "ctxt": 0
              },
              "value": "f",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "params": [
              {
                "type": "Identifier",
                "span": {
                  "start": 133,
                  "end": 142,
                  "ctxt": 0
                },
                "value": "x",
                "optional": false,
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 134,
                    "end": 142,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 136,
                      "end": 142,
                      "ctxt": 0
                    },
                    "kind": "number"
                  }
                }
              }
            ],
            "typeAnn": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 143,
                "end": 149,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 145,
                  "end": 149,
                  "ctxt": 0
                },
                "kind": "void"
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 155,
        "end": 164,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 159,
            "end": 163,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 159,
              "end": 160,
              "ctxt": 0
            },
            "value": "t",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 160,
                "end": 163,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 162,
                  "end": 163,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 162,
                    "end": 163,
                    "ctxt": 0
                  },
                  "value": "T",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 166,
        "end": 196,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 170,
            "end": 195,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 170,
              "end": 171,
              "ctxt": 0
            },
            "value": "a",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 171,
                "end": 195,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 173,
                  "end": 195,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsMethodSignature",
                    "span": {
                      "start": 175,
                      "end": 193,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 175,
                        "end": 176,
                        "ctxt": 0
                      },
                      "value": "f",
                      "optional": false
                    },
                    "computed": false,
                    "optional": false,
                    "params": [
                      {
                        "type": "Identifier",
                        "span": {
                          "start": 177,
                          "end": 186,
                          "ctxt": 0
                        },
                        "value": "x",
                        "optional": false,
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 178,
                            "end": 186,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 180,
                              "end": 186,
                              "ctxt": 0
                            },
                            "kind": "number"
                          }
                        }
                      }
                    ],
                    "typeAnn": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 187,
                        "end": 193,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 189,
                          "end": 193,
                          "ctxt": 0
                        },
                        "kind": "void"
                      }
                    },
                    "typeParams": null
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 200,
        "end": 206,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 200,
          "end": 205,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 200,
            "end": 201,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 204,
            "end": 205,
            "ctxt": 0
          },
          "value": "a",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 208,
        "end": 214,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 208,
          "end": 213,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 208,
            "end": 209,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 212,
            "end": 213,
            "ctxt": 0
          },
          "value": "t",
          "optional": false
        }
      }
    },
    {
      "type": "TsInterfaceDeclaration",
      "span": {
        "start": 218,
        "end": 261,
        "ctxt": 0
      },
      "id": {
        "type": "Identifier",
        "span": {
          "start": 228,
          "end": 229,
          "ctxt": 0
        },
        "value": "S",
        "optional": false
      },
      "declare": false,
      "typeParams": null,
      "extends": [],
      "body": {
        "type": "TsInterfaceBody",
        "span": {
          "start": 230,
          "end": 261,
          "ctxt": 0
        },
        "body": [
          {
            "type": "TsMethodSignature",
            "span": {
              "start": 237,
              "end": 258,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 237,
                "end": 238,
                "ctxt": 0
              },
              "value": "f",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "params": [
              {
                "type": "Identifier",
                "span": {
                  "start": 239,
                  "end": 248,
                  "ctxt": 0
                },
                "value": "x",
                "optional": false,
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 240,
                    "end": 248,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 242,
                      "end": 248,
                      "ctxt": 0
                    },
                    "kind": "number"
                  }
                }
              }
            ],
            "typeAnn": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 249,
                "end": 257,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 251,
                  "end": 257,
                  "ctxt": 0
                },
                "kind": "string"
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 263,
        "end": 272,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 267,
            "end": 271,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 267,
              "end": 268,
              "ctxt": 0
            },
            "value": "s",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 268,
                "end": 271,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 270,
                  "end": 271,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 270,
                    "end": 271,
                    "ctxt": 0
                  },
                  "value": "S",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 274,
        "end": 307,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 278,
            "end": 306,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 278,
              "end": 280,
              "ctxt": 0
            },
            "value": "a2",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 280,
                "end": 306,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 282,
                  "end": 306,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsMethodSignature",
                    "span": {
                      "start": 284,
                      "end": 304,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 284,
                        "end": 285,
                        "ctxt": 0
                      },
                      "value": "f",
                      "optional": false
                    },
                    "computed": false,
                    "optional": false,
                    "params": [
                      {
                        "type": "Identifier",
                        "span": {
                          "start": 286,
                          "end": 295,
                          "ctxt": 0
                        },
                        "value": "x",
                        "optional": false,
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 287,
                            "end": 295,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 289,
                              "end": 295,
                              "ctxt": 0
                            },
                            "kind": "number"
                          }
                        }
                      }
                    ],
                    "typeAnn": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 296,
                        "end": 304,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 298,
                          "end": 304,
                          "ctxt": 0
                        },
                        "kind": "string"
                      }
                    },
                    "typeParams": null
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 309,
        "end": 315,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 309,
          "end": 314,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 309,
            "end": 310,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 313,
            "end": 314,
            "ctxt": 0
          },
          "value": "s",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 317,
        "end": 324,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 317,
          "end": 323,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 317,
            "end": 318,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 321,
            "end": 323,
            "ctxt": 0
          },
          "value": "a2",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 326,
        "end": 332,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 326,
          "end": 331,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 326,
            "end": 327,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 330,
            "end": 331,
            "ctxt": 0
          },
          "value": "s",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 334,
        "end": 341,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 334,
          "end": 340,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 334,
            "end": 335,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 338,
            "end": 340,
            "ctxt": 0
          },
          "value": "a2",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 345,
        "end": 364,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 345,
          "end": 363,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 345,
            "end": 346,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ObjectExpression",
          "span": {
            "start": 349,
            "end": 363,
            "ctxt": 0
          },
          "properties": [
            {
              "type": "KeyValueProperty",
              "key": {
                "type": "Identifier",
                "span": {
                  "start": 351,
                  "end": 352,
                  "ctxt": 0
                },
                "value": "f",
                "optional": false
              },
              "value": {
                "type": "ArrowFunctionExpression",
                "span": {
                  "start": 354,
                  "end": 361,
                  "ctxt": 0
                },
                "params": [],
                "body": {
                  "type": "NumericLiteral",
                  "span": {
                    "start": 360,
                    "end": 361,
                    "ctxt": 0
                  },
                  "value": 1.0
                },
                "async": false,
                "generator": false,
                "typeParameters": null,
                "returnType": null
              }
            }
          ]
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 366,
        "end": 391,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 366,
          "end": 390,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 366,
            "end": 367,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ObjectExpression",
          "span": {
            "start": 370,
            "end": 390,
            "ctxt": 0
          },
          "properties": [
            {
              "type": "KeyValueProperty",
              "key": {
                "type": "Identifier",
                "span": {
                  "start": 372,
                  "end": 373,
                  "ctxt": 0
                },
                "value": "f",
                "optional": false
              },
              "value": {
                "type": "ArrowFunctionExpression",
                "span": {
                  "start": 375,
                  "end": 388,
                  "ctxt": 0
                },
                "params": [
                  {
                    "type": "Identifier",
                    "span": {
                      "start": 379,
                      "end": 382,
                      "ctxt": 0
                    },
                    "value": "x",
                    "optional": false,
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 380,
                        "end": 382,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsTypeReference",
                        "span": {
                          "start": 381,
                          "end": 382,
                          "ctxt": 0
                        },
                        "typeName": {
                          "type": "Identifier",
                          "span": {
                            "start": 381,
                            "end": 382,
                            "ctxt": 0
                          },
                          "value": "T",
                          "optional": false
                        },
                        "typeParams": null
                      }
                    }
                  }
                ],
                "body": {
                  "type": "NumericLiteral",
                  "span": {
                    "start": 387,
                    "end": 388,
                    "ctxt": 0
                  },
                  "value": 1.0
                },
                "async": false,
                "generator": false,
                "typeParameters": {
                  "type": "TsTypeParameterDeclaration",
                  "span": {
                    "start": 375,
                    "end": 378,
                    "ctxt": 0
                  },
                  "parameters": [
                    {
                      "type": "TsTypeParameter",
                      "span": {
                        "start": 376,
                        "end": 377,
                        "ctxt": 0
                      },
                      "name": {
                        "type": "Identifier",
                        "span": {
                          "start": 376,
                          "end": 377,
                          "ctxt": 0
                        },
                        "value": "T",
                        "optional": false
                      },
                      "constraint": null,
                      "default": null
                    }
                  ]
                },
                "returnType": null
              }
            }
          ]
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 393,
        "end": 430,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 393,
          "end": 429,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 393,
            "end": 394,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ObjectExpression",
          "span": {
            "start": 397,
            "end": 429,
            "ctxt": 0
          },
          "properties": [
            {
              "type": "KeyValueProperty",
              "key": {
                "type": "Identifier",
                "span": {
                  "start": 399,
                  "end": 400,
                  "ctxt": 0
                },
                "value": "f",
                "optional": false
              },
              "value": {
                "type": "FunctionExpression",
                "identifier": {
                  "type": "Identifier",
                  "span": {
                    "start": 411,
                    "end": 412,
                    "ctxt": 0
                  },
                  "value": "f",
                  "optional": false
                },
                "params": [],
                "decorators": [],
                "span": {
                  "start": 402,
                  "end": 427,
                  "ctxt": 0
                },
                "body": {
                  "type": "BlockStatement",
                  "span": {
                    "start": 415,
                    "end": 427,
                    "ctxt": 0
                  },
                  "stmts": [
                    {
                      "type": "ReturnStatement",
                      "span": {
                        "start": 417,
                        "end": 425,
                        "ctxt": 0
                      },
                      "argument": {
                        "type": "NumericLiteral",
                        "span": {
                          "start": 424,
                          "end": 425,
                          "ctxt": 0
                        },
                        "value": 1.0
                      }
                    }
                  ]
                },
                "generator": false,
                "async": false,
                "typeParameters": null,
                "returnType": null
              }
            }
          ]
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 432,
        "end": 467,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 432,
          "end": 467,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 432,
            "end": 433,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ObjectExpression",
          "span": {
            "start": 436,
            "end": 467,
            "ctxt": 0
          },
          "properties": [
            {
              "type": "MethodProperty",
              "key": {
                "type": "Identifier",
                "span": {
                  "start": 438,
                  "end": 439,
                  "ctxt": 0
                },
                "value": "f",
                "optional": false
              },
              "params": [
                {
                  "type": "Parameter",
                  "span": {
                    "start": 440,
                    "end": 449,
                    "ctxt": 0
                  },
                  "decorators": [],
                  "pat": {
                    "type": "Identifier",
                    "span": {
                      "start": 440,
                      "end": 449,
                      "ctxt": 0
                    },
                    "value": "x",
                    "optional": false,
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 441,
                        "end": 449,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 443,
                          "end": 449,
                          "ctxt": 0
                        },
                        "kind": "number"
                      }
                    }
                  }
                }
              ],
              "decorators": [],
              "span": {
                "start": 438,
                "end": 465,
                "ctxt": 0
              },
              "body": {
                "type": "BlockStatement",
                "span": {
                  "start": 451,
                  "end": 465,
                  "ctxt": 0
                },
                "stmts": [
                  {
                    "type": "ReturnStatement",
                    "span": {
                      "start": 453,
                      "end": 463,
                      "ctxt": 0
                    },
                    "argument": {
                      "type": "StringLiteral",
                      "span": {
                        "start": 460,
                        "end": 462,
                        "ctxt": 0
                      },
                      "value": "",
                      "hasEscape": false,
                      "kind": {
                        "type": "normal",
                        "containsQuote": true
                      }
                    }
                  }
                ]
              },
              "generator": false,
              "async": false,
              "typeParameters": null,
              "returnType": null
            }
          ]
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 469,
        "end": 487,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 469,
          "end": 487,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 469,
            "end": 470,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ObjectExpression",
          "span": {
            "start": 473,
            "end": 487,
            "ctxt": 0
          },
          "properties": [
            {
              "type": "KeyValueProperty",
              "key": {
                "type": "Identifier",
                "span": {
                  "start": 475,
                  "end": 476,
                  "ctxt": 0
                },
                "value": "f",
                "optional": false
              },
              "value": {
                "type": "ArrowFunctionExpression",
                "span": {
                  "start": 478,
                  "end": 485,
                  "ctxt": 0
                },
                "params": [],
                "body": {
                  "type": "NumericLiteral",
                  "span": {
                    "start": 484,
                    "end": 485,
                    "ctxt": 0
                  },
                  "value": 1.0
                },
                "async": false,
                "generator": false,
                "typeParameters": null,
                "returnType": null
              }
            }
          ]
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 489,
        "end": 515,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 489,
          "end": 514,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 489,
            "end": 490,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ObjectExpression",
          "span": {
            "start": 493,
            "end": 514,
            "ctxt": 0
          },
          "properties": [
            {
              "type": "KeyValueProperty",
              "key": {
                "type": "Identifier",
                "span": {
                  "start": 495,
                  "end": 496,
                  "ctxt": 0
                },
                "value": "f",
                "optional": false
              },
              "value": {
                "type": "ArrowFunctionExpression",
                "span": {
                  "start": 498,
                  "end": 512,
                  "ctxt": 0
                },
                "params": [
                  {
                    "type": "Identifier",
                    "span": {
                      "start": 502,
                      "end": 506,
                      "ctxt": 0
                    },
                    "value": "x",
                    "optional": false,
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 503,
                        "end": 506,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsTypeReference",
                        "span": {
                          "start": 505,
                          "end": 506,
                          "ctxt": 0
                        },
                        "typeName": {
                          "type": "Identifier",
                          "span": {
                            "start": 505,
                            "end": 506,
                            "ctxt": 0
                          },
                          "value": "T",
                          "optional": false
                        },
                        "typeParams": null
                      }
                    }
                  }
                ],
                "body": {
                  "type": "NumericLiteral",
                  "span": {
                    "start": 511,
                    "end": 512,
                    "ctxt": 0
                  },
                  "value": 1.0
                },
                "async": false,
                "generator": false,
                "typeParameters": {
                  "type": "TsTypeParameterDeclaration",
                  "span": {
                    "start": 498,
                    "end": 501,
                    "ctxt": 0
                  },
                  "parameters": [
                    {
                      "type": "TsTypeParameter",
                      "span": {
                        "start": 499,
                        "end": 500,
                        "ctxt": 0
                      },
                      "name": {
                        "type": "Identifier",
                        "span": {
                          "start": 499,
                          "end": 500,
                          "ctxt": 0
                        },
                        "value": "T",
                        "optional": false
                      },
                      "constraint": null,
                      "default": null
                    }
                  ]
                },
                "returnType": null
              }
            }
          ]
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 517,
        "end": 563,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 517,
          "end": 563,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 517,
            "end": 518,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ObjectExpression",
          "span": {
            "start": 521,
            "end": 563,
            "ctxt": 0
          },
          "properties": [
            {
              "type": "KeyValueProperty",
              "key": {
                "type": "Identifier",
                "span": {
                  "start": 523,
                  "end": 524,
                  "ctxt": 0
                },
                "value": "f",
                "optional": false
              },
              "value": {
                "type": "FunctionExpression",
                "identifier": null,
                "params": [
                  {
                    "type": "Parameter",
                    "span": {
                      "start": 536,
                      "end": 545,
                      "ctxt": 0
                    },
                    "decorators": [],
                    "pat": {
                      "type": "Identifier",
                      "span": {
                        "start": 536,
                        "end": 545,
                        "ctxt": 0
                      },
                      "value": "x",
                      "optional": false,
                      "typeAnnotation": {
                        "type": "TsTypeAnnotation",
                        "span": {
                          "start": 537,
                          "end": 545,
                          "ctxt": 0
                        },
                        "typeAnnotation": {
                          "type": "TsKeywordType",
                          "span": {
                            "start": 539,
                            "end": 545,
                            "ctxt": 0
                          },
                          "kind": "number"
                        }
                      }
                    }
                  }
                ],
                "decorators": [],
                "span": {
                  "start": 526,
                  "end": 561,
                  "ctxt": 0
                },
                "body": {
                  "type": "BlockStatement",
                  "span": {
                    "start": 547,
                    "end": 561,
                    "ctxt": 0
                  },
                  "stmts": [
                    {
                      "type": "ReturnStatement",
                      "span": {
                        "start": 549,
                        "end": 559,
                        "ctxt": 0
                      },
                      "argument": {
                        "type": "StringLiteral",
                        "span": {
                          "start": 556,
                          "end": 558,
                          "ctxt": 0
                        },
                        "value": "",
                        "hasEscape": false,
                        "kind": {
                          "type": "normal",
                          "containsQuote": true
                        }
                      }
                    }
                  ]
                },
                "generator": false,
                "async": false,
                "typeParameters": null,
                "returnType": null
              }
            }
          ]
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 578,
        "end": 590,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 578,
          "end": 589,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 578,
            "end": 579,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ArrowFunctionExpression",
          "span": {
            "start": 582,
            "end": 589,
            "ctxt": 0
          },
          "params": [],
          "body": {
            "type": "NumericLiteral",
            "span": {
              "start": 588,
              "end": 589,
              "ctxt": 0
            },
            "value": 1.0
          },
          "async": false,
          "generator": false,
          "typeParameters": null,
          "returnType": null
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 592,
        "end": 631,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 592,
          "end": 631,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 592,
            "end": 593,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "FunctionExpression",
          "identifier": null,
          "params": [
            {
              "type": "Parameter",
              "span": {
                "start": 606,
                "end": 615,
                "ctxt": 0
              },
              "decorators": [],
              "pat": {
                "type": "Identifier",
                "span": {
                  "start": 606,
                  "end": 615,
                  "ctxt": 0
                },
                "value": "x",
                "optional": false,
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 607,
                    "end": 615,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 609,
                      "end": 615,
                      "ctxt": 0
                    },
                    "kind": "number"
                  }
                }
              }
            }
          ],
          "decorators": [],
          "span": {
            "start": 596,
            "end": 631,
            "ctxt": 0
          },
          "body": {
            "type": "BlockStatement",
            "span": {
              "start": 617,
              "end": 631,
              "ctxt": 0
            },
            "stmts": [
              {
                "type": "ReturnStatement",
                "span": {
                  "start": 619,
                  "end": 629,
                  "ctxt": 0
                },
                "argument": {
                  "type": "StringLiteral",
                  "span": {
                    "start": 626,
                    "end": 628,
                    "ctxt": 0
                  },
                  "value": "",
                  "hasEscape": false,
                  "kind": {
                    "type": "normal",
                    "containsQuote": true
                  }
                }
              }
            ]
          },
          "generator": false,
          "async": false,
          "typeParameters": null,
          "returnType": null
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 633,
        "end": 645,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 633,
          "end": 644,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 633,
            "end": 634,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ArrowFunctionExpression",
          "span": {
            "start": 637,
            "end": 644,
            "ctxt": 0
          },
          "params": [],
          "body": {
            "type": "NumericLiteral",
            "span": {
              "start": 643,
              "end": 644,
              "ctxt": 0
            },
            "value": 1.0
          },
          "async": false,
          "generator": false,
          "typeParameters": null,
          "returnType": null
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 647,
        "end": 686,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 647,
          "end": 686,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 647,
            "end": 648,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "FunctionExpression",
          "identifier": null,
          "params": [
            {
              "type": "Parameter",
              "span": {
                "start": 661,
                "end": 670,
                "ctxt": 0
              },
              "decorators": [],
              "pat": {
                "type": "Identifier",
                "span": {
                  "start": 661,
                  "end": 670,
                  "ctxt": 0
                },
                "value": "x",
                "optional": false,
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 662,
                    "end": 670,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 664,
                      "end": 670,
                      "ctxt": 0
                    },
                    "kind": "number"
                  }
                }
              }
            }
          ],
          "decorators": [],
          "span": {
            "start": 651,
            "end": 686,
            "ctxt": 0
          },
          "body": {
            "type": "BlockStatement",
            "span": {
              "start": 672,
              "end": 686,
              "ctxt": 0
            },
            "stmts": [
              {
                "type": "ReturnStatement",
                "span": {
                  "start": 674,
                  "end": 684,
                  "ctxt": 0
                },
                "argument": {
                  "type": "StringLiteral",
                  "span": {
                    "start": 681,
                    "end": 683,
                    "ctxt": 0
                  },
                  "value": "",
                  "hasEscape": false,
                  "kind": {
                    "type": "normal",
                    "containsQuote": true
                  }
                }
              }
            ]
          },
          "generator": false,
          "async": false,
          "typeParameters": null,
          "returnType": null
        }
      }
    },
    {
      "type": "TsInterfaceDeclaration",
      "span": {
        "start": 690,
        "end": 732,
        "ctxt": 0
      },
      "id": {
        "type": "Identifier",
        "span": {
          "start": 700,
          "end": 702,
          "ctxt": 0
        },
        "value": "S2",
        "optional": false
      },
      "declare": false,
      "typeParams": null,
      "extends": [],
      "body": {
        "type": "TsInterfaceBody",
        "span": {
          "start": 703,
          "end": 732,
          "ctxt": 0
        },
        "body": [
          {
            "type": "TsMethodSignature",
            "span": {
              "start": 710,
              "end": 729,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 710,
                "end": 711,
                "ctxt": 0
              },
              "value": "f",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "params": [
              {
                "type": "Identifier",
                "span": {
                  "start": 712,
                  "end": 721,
                  "ctxt": 0
                },
                "value": "x",
                "optional": false,
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 713,
                    "end": 721,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 715,
                      "end": 721,
                      "ctxt": 0
                    },
                    "kind": "string"
                  }
                }
              }
            ],
            "typeAnn": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 722,
                "end": 728,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 724,
                  "end": 728,
                  "ctxt": 0
                },
                "kind": "void"
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 734,
        "end": 745,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 738,
            "end": 744,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 738,
              "end": 740,
              "ctxt": 0
            },
            "value": "s2",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 740,
                "end": 744,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 742,
                  "end": 744,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 742,
                    "end": 744,
                    "ctxt": 0
                  },
                  "value": "S2",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 747,
        "end": 778,
        "ctxt": 0
      },
      "kind": "var",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 751,
            "end": 777,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 751,
              "end": 753,
              "ctxt": 0
            },
            "value": "a3",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 753,
                "end": 777,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 755,
                  "end": 777,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsMethodSignature",
                    "span": {
                      "start": 757,
                      "end": 775,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 757,
                        "end": 758,
                        "ctxt": 0
                      },
                      "value": "f",
                      "optional": false
                    },
                    "computed": false,
                    "optional": false,
                    "params": [
                      {
                        "type": "Identifier",
                        "span": {
                          "start": 759,
                          "end": 768,
                          "ctxt": 0
                        },
                        "value": "x",
                        "optional": false,
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 760,
                            "end": 768,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 762,
                              "end": 768,
                              "ctxt": 0
                            },
                            "kind": "string"
                          }
                        }
                      }
                    ],
                    "typeAnn": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 769,
                        "end": 775,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 771,
                          "end": 775,
                          "ctxt": 0
                        },
                        "kind": "void"
                      }
                    },
                    "typeParams": null
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 801,
        "end": 808,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 801,
          "end": 807,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 801,
            "end": 802,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 805,
            "end": 807,
            "ctxt": 0
          },
          "value": "s2",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 810,
        "end": 817,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 810,
          "end": 816,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 810,
            "end": 811,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 814,
            "end": 816,
            "ctxt": 0
          },
          "value": "a3",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 819,
        "end": 840,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 819,
          "end": 839,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 819,
            "end": 820,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ArrowFunctionExpression",
          "span": {
            "start": 823,
            "end": 839,
            "ctxt": 0
          },
          "params": [
            {
              "type": "Identifier",
              "span": {
                "start": 824,
                "end": 833,
                "ctxt": 0
              },
              "value": "x",
              "optional": false,
              "typeAnnotation": {
                "type": "TsTypeAnnotation",
                "span": {
                  "start": 825,
                  "end": 833,
                  "ctxt": 0
                },
                "typeAnnotation": {
                  "type": "TsKeywordType",
                  "span": {
                    "start": 827,
                    "end": 833,
                    "ctxt": 0
                  },
                  "kind": "string"
                }
              }
            }
          ],
          "body": {
            "type": "NumericLiteral",
            "span": {
              "start": 838,
              "end": 839,
              "ctxt": 0
            },
            "value": 1.0
          },
          "async": false,
          "generator": false,
          "typeParameters": null,
          "returnType": null
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 842,
        "end": 881,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 842,
          "end": 881,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 842,
            "end": 843,
            "ctxt": 0
          },
          "value": "t",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "FunctionExpression",
          "identifier": null,
          "params": [
            {
              "type": "Parameter",
              "span": {
                "start": 856,
                "end": 865,
                "ctxt": 0
              },
              "decorators": [],
              "pat": {
                "type": "Identifier",
                "span": {
                  "start": 856,
                  "end": 865,
                  "ctxt": 0
                },
                "value": "x",
                "optional": false,
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 857,
                    "end": 865,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 859,
                      "end": 865,
                      "ctxt": 0
                    },
                    "kind": "string"
                  }
                }
              }
            }
          ],
          "decorators": [],
          "span": {
            "start": 846,
            "end": 881,
            "ctxt": 0
          },
          "body": {
            "type": "BlockStatement",
            "span": {
              "start": 867,
              "end": 881,
              "ctxt": 0
            },
            "stmts": [
              {
                "type": "ReturnStatement",
                "span": {
                  "start": 869,
                  "end": 879,
                  "ctxt": 0
                },
                "argument": {
                  "type": "StringLiteral",
                  "span": {
                    "start": 876,
                    "end": 878,
                    "ctxt": 0
                  },
                  "value": "",
                  "hasEscape": false,
                  "kind": {
                    "type": "normal",
                    "containsQuote": true
                  }
                }
              }
            ]
          },
          "generator": false,
          "async": false,
          "typeParameters": null,
          "returnType": null
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 883,
        "end": 890,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 883,
          "end": 889,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 883,
            "end": 884,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 887,
            "end": 889,
            "ctxt": 0
          },
          "value": "s2",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 892,
        "end": 899,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 892,
          "end": 898,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 892,
            "end": 893,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 896,
            "end": 898,
            "ctxt": 0
          },
          "value": "a3",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 901,
        "end": 922,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 901,
          "end": 921,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 901,
            "end": 902,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "ArrowFunctionExpression",
          "span": {
            "start": 905,
            "end": 921,
            "ctxt": 0
          },
          "params": [
            {
              "type": "Identifier",
              "span": {
                "start": 906,
                "end": 915,
                "ctxt": 0
              },
              "value": "x",
              "optional": false,
              "typeAnnotation": {
                "type": "TsTypeAnnotation",
                "span": {
                  "start": 907,
                  "end": 915,
                  "ctxt": 0
                },
                "typeAnnotation": {
                  "type": "TsKeywordType",
                  "span": {
                    "start": 909,
                    "end": 915,
                    "ctxt": 0
                  },
                  "kind": "string"
                }
              }
            }
          ],
          "body": {
            "type": "NumericLiteral",
            "span": {
              "start": 920,
              "end": 921,
              "ctxt": 0
            },
            "value": 1.0
          },
          "async": false,
          "generator": false,
          "typeParameters": null,
          "returnType": null
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 924,
        "end": 963,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 924,
          "end": 963,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 924,
            "end": 925,
            "ctxt": 0
          },
          "value": "a",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "FunctionExpression",
          "identifier": null,
          "params": [
            {
              "type": "Parameter",
              "span": {
                "start": 938,
                "end": 947,
                "ctxt": 0
              },
              "decorators": [],
              "pat": {
                "type": "Identifier",
                "span": {
                  "start": 938,
                  "end": 947,
                  "ctxt": 0
                },
                "value": "x",
                "optional": false,
                "typeAnnotation": {
                  "type": "TsTypeAnnotation",
                  "span": {
                    "start": 939,
                    "end": 947,
                    "ctxt": 0
                  },
                  "typeAnnotation": {
                    "type": "TsKeywordType",
                    "span": {
                      "start": 941,
                      "end": 947,
                      "ctxt": 0
                    },
                    "kind": "string"
                  }
                }
              }
            }
          ],
          "decorators": [],
          "span": {
            "start": 928,
            "end": 963,
            "ctxt": 0
          },
          "body": {
            "type": "BlockStatement",
            "span": {
              "start": 949,
              "end": 963,
              "ctxt": 0
            },
            "stmts": [
              {
                "type": "ReturnStatement",
                "span": {
                  "start": 951,
                  "end": 961,
                  "ctxt": 0
                },
                "argument": {
                  "type": "StringLiteral",
                  "span": {
                    "start": 958,
                    "end": 960,
                    "ctxt": 0
                  },
                  "value": "",
                  "hasEscape": false,
                  "kind": {
                    "type": "normal",
                    "containsQuote": true
                  }
                }
              }
            ]
          },
          "generator": false,
          "async": false,
          "typeParameters": null,
          "returnType": null
        }
      }
    }
  ],
  "interpreter": null
}