{
  "type": "Script",
  "span": {
    "start": 19,
    "end": 825,
    "ctxt": 0
  },
  "body": [
    {
      "type": "TsTypeAliasDeclaration",
      "span": {
        "start": 19,
        "end": 42,
        "ctxt": 0
      },
      "declare": false,
      "id": {
        "type": "Identifier",
        "span": {
          "start": 24,
          "end": 25,
          "ctxt": 0
        },
        "value": "A",
        "optional": false
      },
      "typeParams": null,
      "typeAnnotation": {
        "type": "TsTypeLiteral",
        "span": {
          "start": 28,
          "end": 41,
          "ctxt": 0
        },
        "members": [
          {
            "type": "TsPropertySignature",
            "span": {
              "start": 30,
              "end": 39,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 30,
                "end": 31,
                "ctxt": 0
              },
              "value": "a",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "init": null,
            "params": [],
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 31,
                "end": 39,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 33,
                  "end": 39,
                  "ctxt": 0
                },
                "kind": "string"
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "TsTypeAliasDeclaration",
      "span": {
        "start": 43,
        "end": 66,
        "ctxt": 0
      },
      "declare": false,
      "id": {
        "type": "Identifier",
        "span": {
          "start": 48,
          "end": 49,
          "ctxt": 0
        },
        "value": "B",
        "optional": false
      },
      "typeParams": null,
      "typeAnnotation": {
        "type": "TsTypeLiteral",
        "span": {
          "start": 52,
          "end": 65,
          "ctxt": 0
        },
        "members": [
          {
            "type": "TsPropertySignature",
            "span": {
              "start": 54,
              "end": 63,
              "ctxt": 0
            },
            "readonly": false,
            "key": {
              "type": "Identifier",
              "span": {
                "start": 54,
                "end": 55,
                "ctxt": 0
              },
              "value": "b",
              "optional": false
            },
            "computed": false,
            "optional": false,
            "init": null,
            "params": [],
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 55,
                "end": 63,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsKeywordType",
                "span": {
                  "start": 57,
                  "end": 63,
                  "ctxt": 0
                },
                "kind": "string"
              }
            },
            "typeParams": null
          }
        ]
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 68,
        "end": 98,
        "ctxt": 0
      },
      "kind": "let",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 80,
            "end": 97,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 80,
              "end": 83,
              "ctxt": 0
            },
            "value": "sa1",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 83,
                "end": 97,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 85,
                  "end": 97,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsPropertySignature",
                    "span": {
                      "start": 87,
                      "end": 95,
                      "ctxt": 0
                    },
                    "readonly": false,
                    "key": {
                      "type": "Identifier",
                      "span": {
                        "start": 87,
                        "end": 88,
                        "ctxt": 0
                      },
                      "value": "x",
                      "optional": false
                    },
                    "computed": false,
                    "optional": false,
                    "init": null,
                    "params": [],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 88,
                        "end": 95,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsIntersectionType",
                        "span": {
                          "start": 90,
                          "end": 95,
                          "ctxt": 0
                        },
                        "types": [
                          {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 90,
                              "end": 91,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 90,
                                "end": 91,
                                "ctxt": 0
                              },
                              "value": "A",
                              "optional": false
                            },
                            "typeParams": null
                          },
                          {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 94,
                              "end": 95,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 94,
                                "end": 95,
                                "ctxt": 0
                              },
                              "value": "B",
                              "optional": false
                            },
                            "typeParams": null
                          }
                        ]
                      }
                    },
                    "typeParams": null
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 99,
        "end": 136,
        "ctxt": 0
      },
      "kind": "let",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 111,
            "end": 135,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 111,
              "end": 114,
              "ctxt": 0
            },
            "value": "sa2",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 114,
                "end": 135,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsIntersectionType",
                "span": {
                  "start": 116,
                  "end": 135,
                  "ctxt": 0
                },
                "types": [
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 116,
                      "end": 124,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsPropertySignature",
                        "span": {
                          "start": 118,
                          "end": 122,
                          "ctxt": 0
                        },
                        "readonly": false,
                        "key": {
                          "type": "Identifier",
                          "span": {
                            "start": 118,
                            "end": 119,
                            "ctxt": 0
                          },
                          "value": "x",
                          "optional": false
                        },
                        "computed": false,
                        "optional": false,
                        "init": null,
                        "params": [],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 119,
                            "end": 122,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 121,
                              "end": 122,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 121,
                                "end": 122,
                                "ctxt": 0
                              },
                              "value": "A",
                              "optional": false
                            },
                            "typeParams": null
                          }
                        },
                        "typeParams": null
                      }
                    ]
                  },
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 127,
                      "end": 135,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsPropertySignature",
                        "span": {
                          "start": 129,
                          "end": 133,
                          "ctxt": 0
                        },
                        "readonly": false,
                        "key": {
                          "type": "Identifier",
                          "span": {
                            "start": 129,
                            "end": 130,
                            "ctxt": 0
                          },
                          "value": "x",
                          "optional": false
                        },
                        "computed": false,
                        "optional": false,
                        "init": null,
                        "params": [],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 130,
                            "end": 133,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 132,
                              "end": 133,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 132,
                                "end": 133,
                                "ctxt": 0
                              },
                              "value": "B",
                              "optional": false
                            },
                            "typeParams": null
                          }
                        },
                        "typeParams": null
                      }
                    ]
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 137,
        "end": 179,
        "ctxt": 0
      },
      "kind": "let",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 149,
            "end": 178,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 149,
              "end": 152,
              "ctxt": 0
            },
            "value": "ta1",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 152,
                "end": 178,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 154,
                  "end": 178,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsIndexSignature",
                    "params": [
                      {
                        "type": "Identifier",
                        "span": {
                          "start": 157,
                          "end": 168,
                          "ctxt": 0
                        },
                        "value": "key",
                        "optional": false,
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 160,
                            "end": 168,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 162,
                              "end": 168,
                              "ctxt": 0
                            },
                            "kind": "string"
                          }
                        }
                      }
                    ],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 169,
                        "end": 176,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsIntersectionType",
                        "span": {
                          "start": 171,
                          "end": 176,
                          "ctxt": 0
                        },
                        "types": [
                          {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 171,
                              "end": 172,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 171,
                                "end": 172,
                                "ctxt": 0
                              },
                              "value": "A",
                              "optional": false
                            },
                            "typeParams": null
                          },
                          {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 175,
                              "end": 176,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 175,
                                "end": 176,
                                "ctxt": 0
                              },
                              "value": "B",
                              "optional": false
                            },
                            "typeParams": null
                          }
                        ]
                      }
                    },
                    "readonly": false,
                    "static": false,
                    "span": {
                      "start": 156,
                      "end": 176,
                      "ctxt": 0
                    }
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 180,
        "end": 241,
        "ctxt": 0
      },
      "kind": "let",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 192,
            "end": 240,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 192,
              "end": 195,
              "ctxt": 0
            },
            "value": "ta2",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 195,
                "end": 240,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsIntersectionType",
                "span": {
                  "start": 197,
                  "end": 240,
                  "ctxt": 0
                },
                "types": [
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 197,
                      "end": 217,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsIndexSignature",
                        "params": [
                          {
                            "type": "Identifier",
                            "span": {
                              "start": 200,
                              "end": 211,
                              "ctxt": 0
                            },
                            "value": "key",
                            "optional": false,
                            "typeAnnotation": {
                              "type": "TsTypeAnnotation",
                              "span": {
                                "start": 203,
                                "end": 211,
                                "ctxt": 0
                              },
                              "typeAnnotation": {
                                "type": "TsKeywordType",
                                "span": {
                                  "start": 205,
                                  "end": 211,
                                  "ctxt": 0
                                },
                                "kind": "string"
                              }
                            }
                          }
                        ],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 212,
                            "end": 215,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 214,
                              "end": 215,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 214,
                                "end": 215,
                                "ctxt": 0
                              },
                              "value": "A",
                              "optional": false
                            },
                            "typeParams": null
                          }
                        },
                        "readonly": false,
                        "static": false,
                        "span": {
                          "start": 199,
                          "end": 215,
                          "ctxt": 0
                        }
                      }
                    ]
                  },
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 220,
                      "end": 240,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsIndexSignature",
                        "params": [
                          {
                            "type": "Identifier",
                            "span": {
                              "start": 223,
                              "end": 234,
                              "ctxt": 0
                            },
                            "value": "key",
                            "optional": false,
                            "typeAnnotation": {
                              "type": "TsTypeAnnotation",
                              "span": {
                                "start": 226,
                                "end": 234,
                                "ctxt": 0
                              },
                              "typeAnnotation": {
                                "type": "TsKeywordType",
                                "span": {
                                  "start": 228,
                                  "end": 234,
                                  "ctxt": 0
                                },
                                "kind": "string"
                              }
                            }
                          }
                        ],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 235,
                            "end": 238,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 237,
                              "end": 238,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 237,
                                "end": 238,
                                "ctxt": 0
                              },
                              "value": "B",
                              "optional": false
                            },
                            "typeParams": null
                          }
                        },
                        "readonly": false,
                        "static": false,
                        "span": {
                          "start": 222,
                          "end": 238,
                          "ctxt": 0
                        }
                      }
                    ]
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 243,
        "end": 253,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 243,
          "end": 252,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 243,
            "end": 246,
            "ctxt": 0
          },
          "value": "ta1",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 249,
            "end": 252,
            "ctxt": 0
          },
          "value": "sa1",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 254,
        "end": 264,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 254,
          "end": 263,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 254,
            "end": 257,
            "ctxt": 0
          },
          "value": "ta1",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 260,
            "end": 263,
            "ctxt": 0
          },
          "value": "sa2",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 265,
        "end": 275,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 265,
          "end": 274,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 265,
            "end": 268,
            "ctxt": 0
          },
          "value": "ta2",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 271,
            "end": 274,
            "ctxt": 0
          },
          "value": "sa1",
          "optional": false
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 276,
        "end": 286,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 276,
          "end": 285,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 276,
            "end": 279,
            "ctxt": 0
          },
          "value": "ta2",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 282,
            "end": 285,
            "ctxt": 0
          },
          "value": "sa2",
          "optional": false
        }
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 288,
        "end": 325,
        "ctxt": 0
      },
      "kind": "let",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 300,
            "end": 324,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 300,
              "end": 303,
              "ctxt": 0
            },
            "value": "sb1",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 303,
                "end": 324,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsIntersectionType",
                "span": {
                  "start": 305,
                  "end": 324,
                  "ctxt": 0
                },
                "types": [
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 305,
                      "end": 313,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsPropertySignature",
                        "span": {
                          "start": 307,
                          "end": 311,
                          "ctxt": 0
                        },
                        "readonly": false,
                        "key": {
                          "type": "Identifier",
                          "span": {
                            "start": 307,
                            "end": 308,
                            "ctxt": 0
                          },
                          "value": "x",
                          "optional": false
                        },
                        "computed": false,
                        "optional": false,
                        "init": null,
                        "params": [],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 308,
                            "end": 311,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 310,
                              "end": 311,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 310,
                                "end": 311,
                                "ctxt": 0
                              },
                              "value": "A",
                              "optional": false
                            },
                            "typeParams": null
                          }
                        },
                        "typeParams": null
                      }
                    ]
                  },
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 316,
                      "end": 324,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsPropertySignature",
                        "span": {
                          "start": 318,
                          "end": 322,
                          "ctxt": 0
                        },
                        "readonly": false,
                        "key": {
                          "type": "Identifier",
                          "span": {
                            "start": 318,
                            "end": 319,
                            "ctxt": 0
                          },
                          "value": "y",
                          "optional": false
                        },
                        "computed": false,
                        "optional": false,
                        "init": null,
                        "params": [],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 319,
                            "end": 322,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsTypeReference",
                            "span": {
                              "start": 321,
                              "end": 322,
                              "ctxt": 0
                            },
                            "typeName": {
                              "type": "Identifier",
                              "span": {
                                "start": 321,
                                "end": 322,
                                "ctxt": 0
                              },
                              "value": "B",
                              "optional": false
                            },
                            "typeParams": null
                          }
                        },
                        "typeParams": null
                      }
                    ]
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 326,
        "end": 364,
        "ctxt": 0
      },
      "kind": "let",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 338,
            "end": 363,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 338,
              "end": 341,
              "ctxt": 0
            },
            "value": "tb1",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 341,
                "end": 363,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 343,
                  "end": 363,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsIndexSignature",
                    "params": [
                      {
                        "type": "Identifier",
                        "span": {
                          "start": 346,
                          "end": 357,
                          "ctxt": 0
                        },
                        "value": "key",
                        "optional": false,
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 349,
                            "end": 357,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 351,
                              "end": 357,
                              "ctxt": 0
                            },
                            "kind": "string"
                          }
                        }
                      }
                    ],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 358,
                        "end": 361,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsTypeReference",
                        "span": {
                          "start": 360,
                          "end": 361,
                          "ctxt": 0
                        },
                        "typeName": {
                          "type": "Identifier",
                          "span": {
                            "start": 360,
                            "end": 361,
                            "ctxt": 0
                          },
                          "value": "A",
                          "optional": false
                        },
                        "typeParams": null
                      }
                    },
                    "readonly": false,
                    "static": false,
                    "span": {
                      "start": 345,
                      "end": 361,
                      "ctxt": 0
                    }
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 366,
        "end": 376,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 366,
          "end": 375,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 366,
            "end": 369,
            "ctxt": 0
          },
          "value": "tb1",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 372,
            "end": 375,
            "ctxt": 0
          },
          "value": "sb1",
          "optional": false
        }
      }
    },
    {
      "type": "TsTypeAliasDeclaration",
      "span": {
        "start": 410,
        "end": 515,
        "ctxt": 0
      },
      "declare": false,
      "id": {
        "type": "Identifier",
        "span": {
          "start": 415,
          "end": 421,
          "ctxt": 0
        },
        "value": "constr",
        "optional": false
      },
      "typeParams": {
        "type": "TsTypeParameterDeclaration",
        "span": {
          "start": 421,
          "end": 434,
          "ctxt": 0
        },
        "parameters": [
          {
            "type": "TsTypeParameter",
            "span": {
              "start": 422,
              "end": 428,
              "ctxt": 0
            },
            "name": {
              "type": "Identifier",
              "span": {
                "start": 422,
                "end": 428,
                "ctxt": 0
              },
              "value": "Source",
              "optional": false
            },
            "in": false,
            "out": false,
            "const": false,
            "constraint": null,
            "default": null
          },
          {
            "type": "TsTypeParameter",
            "span": {
              "start": 430,
              "end": 433,
              "ctxt": 0
            },
            "name": {
              "type": "Identifier",
              "span": {
                "start": 430,
                "end": 433,
                "ctxt": 0
              },
              "value": "Tgt",
              "optional": false
            },
            "in": false,
            "out": false,
            "const": false,
            "constraint": null,
            "default": null
          }
        ]
      },
      "typeAnnotation": {
        "type": "TsIntersectionType",
        "span": {
          "start": 437,
          "end": 514,
          "ctxt": 0
        },
        "types": [
          {
            "type": "TsMappedType",
            "span": {
              "start": 437,
              "end": 468,
              "ctxt": 0
            },
            "readonly": null,
            "typeParam": {
              "type": "TsTypeParameter",
              "span": {
                "start": 440,
                "end": 457,
                "ctxt": 0
              },
              "name": {
                "type": "Identifier",
                "span": {
                  "start": 440,
                  "end": 441,
                  "ctxt": 0
                },
                "value": "K",
                "optional": false
              },
              "in": false,
              "out": false,
              "const": false,
              "constraint": {
                "type": "TsTypeOperator",
                "span": {
                  "start": 445,
                  "end": 457,
                  "ctxt": 0
                },
                "op": "keyof",
                "typeAnnotation": {
                  "type": "TsTypeReference",
                  "span": {
                    "start": 451,
                    "end": 457,
                    "ctxt": 0
                  },
                  "typeName": {
                    "type": "Identifier",
                    "span": {
                      "start": 451,
                      "end": 457,
                      "ctxt": 0
                    },
                    "value": "Source",
                    "optional": false
                  },
                  "typeParams": null
                }
              },
              "default": null
            },
            "nameType": null,
            "optional": null,
            "typeAnnotation": {
              "type": "TsKeywordType",
              "span": {
                "start": 460,
                "end": 466,
                "ctxt": 0
              },
              "kind": "string"
            }
          },
          {
            "type": "TsTypeReference",
            "span": {
              "start": 471,
              "end": 514,
              "ctxt": 0
            },
            "typeName": {
              "type": "Identifier",
              "span": {
                "start": 471,
                "end": 475,
                "ctxt": 0
              },
              "value": "Pick",
              "optional": false
            },
            "typeParams": {
              "type": "TsTypeParameterInstantiation",
              "span": {
                "start": 475,
                "end": 514,
                "ctxt": 0
              },
              "params": [
                {
                  "type": "TsTypeReference",
                  "span": {
                    "start": 476,
                    "end": 479,
                    "ctxt": 0
                  },
                  "typeName": {
                    "type": "Identifier",
                    "span": {
                      "start": 476,
                      "end": 479,
                      "ctxt": 0
                    },
                    "value": "Tgt",
                    "optional": false
                  },
                  "typeParams": null
                },
                {
                  "type": "TsTypeReference",
                  "span": {
                    "start": 481,
                    "end": 513,
                    "ctxt": 0
                  },
                  "typeName": {
                    "type": "Identifier",
                    "span": {
                      "start": 481,
                      "end": 488,
                      "ctxt": 0
                    },
                    "value": "Exclude",
                    "optional": false
                  },
                  "typeParams": {
                    "type": "TsTypeParameterInstantiation",
                    "span": {
                      "start": 488,
                      "end": 513,
                      "ctxt": 0
                    },
                    "params": [
                      {
                        "type": "TsTypeOperator",
                        "span": {
                          "start": 489,
                          "end": 498,
                          "ctxt": 0
                        },
                        "op": "keyof",
                        "typeAnnotation": {
                          "type": "TsTypeReference",
                          "span": {
                            "start": 495,
                            "end": 498,
                            "ctxt": 0
                          },
                          "typeName": {
                            "type": "Identifier",
                            "span": {
                              "start": 495,
                              "end": 498,
                              "ctxt": 0
                            },
                            "value": "Tgt",
                            "optional": false
                          },
                          "typeParams": null
                        }
                      },
                      {
                        "type": "TsTypeOperator",
                        "span": {
                          "start": 500,
                          "end": 512,
                          "ctxt": 0
                        },
                        "op": "keyof",
                        "typeAnnotation": {
                          "type": "TsTypeReference",
                          "span": {
                            "start": 506,
                            "end": 512,
                            "ctxt": 0
                          },
                          "typeName": {
                            "type": "Identifier",
                            "span": {
                              "start": 506,
                              "end": 512,
                              "ctxt": 0
                            },
                            "value": "Source",
                            "optional": false
                          },
                          "typeParams": null
                        }
                      }
                    ]
                  }
                }
              ]
            }
          }
        ]
      }
    },
    {
      "type": "TsTypeAliasDeclaration",
      "span": {
        "start": 517,
        "end": 571,
        "ctxt": 0
      },
      "declare": false,
      "id": {
        "type": "Identifier",
        "span": {
          "start": 522,
          "end": 523,
          "ctxt": 0
        },
        "value": "s",
        "optional": false
      },
      "typeParams": null,
      "typeAnnotation": {
        "type": "TsTypeReference",
        "span": {
          "start": 526,
          "end": 570,
          "ctxt": 0
        },
        "typeName": {
          "type": "Identifier",
          "span": {
            "start": 526,
            "end": 532,
            "ctxt": 0
          },
          "value": "constr",
          "optional": false
        },
        "typeParams": {
          "type": "TsTypeParameterInstantiation",
          "span": {
            "start": 532,
            "end": 570,
            "ctxt": 0
          },
          "params": [
            {
              "type": "TsTypeLiteral",
              "span": {
                "start": 533,
                "end": 535,
                "ctxt": 0
              },
              "members": []
            },
            {
              "type": "TsTypeLiteral",
              "span": {
                "start": 537,
                "end": 569,
                "ctxt": 0
              },
              "members": [
                {
                  "type": "TsIndexSignature",
                  "params": [
                    {
                      "type": "Identifier",
                      "span": {
                        "start": 540,
                        "end": 551,
                        "ctxt": 0
                      },
                      "value": "key",
                      "optional": false,
                      "typeAnnotation": {
                        "type": "TsTypeAnnotation",
                        "span": {
                          "start": 543,
                          "end": 551,
                          "ctxt": 0
                        },
                        "typeAnnotation": {
                          "type": "TsKeywordType",
                          "span": {
                            "start": 545,
                            "end": 551,
                            "ctxt": 0
                          },
                          "kind": "string"
                        }
                      }
                    }
                  ],
                  "typeAnnotation": {
                    "type": "TsTypeAnnotation",
                    "span": {
                      "start": 552,
                      "end": 567,
                      "ctxt": 0
                    },
                    "typeAnnotation": {
                      "type": "TsTypeLiteral",
                      "span": {
                        "start": 554,
                        "end": 567,
                        "ctxt": 0
                      },
                      "members": [
                        {
                          "type": "TsPropertySignature",
                          "span": {
                            "start": 556,
                            "end": 565,
                            "ctxt": 0
                          },
                          "readonly": false,
                          "key": {
                            "type": "Identifier",
                            "span": {
                              "start": 556,
                              "end": 557,
                              "ctxt": 0
                            },
                            "value": "a",
                            "optional": false
                          },
                          "computed": false,
                          "optional": false,
                          "init": null,
                          "params": [],
                          "typeAnnotation": {
                            "type": "TsTypeAnnotation",
                            "span": {
                              "start": 557,
                              "end": 565,
                              "ctxt": 0
                            },
                            "typeAnnotation": {
                              "type": "TsKeywordType",
                              "span": {
                                "start": 559,
                                "end": 565,
                                "ctxt": 0
                              },
                              "kind": "string"
                            }
                          },
                          "typeParams": null
                        }
                      ]
                    }
                  },
                  "readonly": false,
                  "static": false,
                  "span": {
                    "start": 539,
                    "end": 567,
                    "ctxt": 0
                  }
                }
              ]
            }
          ]
        }
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 573,
        "end": 592,
        "ctxt": 0
      },
      "kind": "const",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 587,
            "end": 591,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 587,
              "end": 588,
              "ctxt": 0
            },
            "value": "q",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 588,
                "end": 591,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeReference",
                "span": {
                  "start": 590,
                  "end": 591,
                  "ctxt": 0
                },
                "typeName": {
                  "type": "Identifier",
                  "span": {
                    "start": 590,
                    "end": 591,
                    "ctxt": 0
                  },
                  "value": "s",
                  "optional": false
                },
                "typeParams": null
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 593,
        "end": 614,
        "ctxt": 0
      },
      "expression": {
        "type": "CallExpression",
        "span": {
          "start": 593,
          "end": 613,
          "ctxt": 0
        },
        "callee": {
          "type": "MemberExpression",
          "span": {
            "start": 593,
            "end": 610,
            "ctxt": 0
          },
          "object": {
            "type": "MemberExpression",
            "span": {
              "start": 593,
              "end": 603,
              "ctxt": 0
            },
            "object": {
              "type": "MemberExpression",
              "span": {
                "start": 593,
                "end": 601,
                "ctxt": 0
              },
              "object": {
                "type": "Identifier",
                "span": {
                  "start": 593,
                  "end": 594,
                  "ctxt": 0
                },
                "value": "q",
                "optional": false
              },
              "property": {
                "type": "Computed",
                "span": {
                  "start": 594,
                  "end": 601,
                  "ctxt": 0
                },
                "expression": {
                  "type": "StringLiteral",
                  "span": {
                    "start": 595,
                    "end": 600,
                    "ctxt": 0
                  },
                  "value": "asd",
                  "raw": "\"asd\""
                }
              }
            },
            "property": {
              "type": "Identifier",
              "span": {
                "start": 602,
                "end": 603,
                "ctxt": 0
              },
              "value": "a",
              "optional": false
            }
          },
          "property": {
            "type": "Identifier",
            "span": {
              "start": 604,
              "end": 610,
              "ctxt": 0
            },
            "value": "substr",
            "optional": false
          }
        },
        "arguments": [
          {
            "spread": null,
            "expression": {
              "type": "NumericLiteral",
              "span": {
                "start": 611,
                "end": 612,
                "ctxt": 0
              },
              "value": 1.0,
              "raw": "1"
            }
          }
        ],
        "typeArguments": null
      }
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 615,
        "end": 626,
        "ctxt": 0
      },
      "expression": {
        "type": "MemberExpression",
        "span": {
          "start": 615,
          "end": 625,
          "ctxt": 0
        },
        "object": {
          "type": "MemberExpression",
          "span": {
            "start": 615,
            "end": 623,
            "ctxt": 0
          },
          "object": {
            "type": "Identifier",
            "span": {
              "start": 615,
              "end": 616,
              "ctxt": 0
            },
            "value": "q",
            "optional": false
          },
          "property": {
            "type": "Computed",
            "span": {
              "start": 616,
              "end": 623,
              "ctxt": 0
            },
            "expression": {
              "type": "StringLiteral",
              "span": {
                "start": 617,
                "end": 622,
                "ctxt": 0
              },
              "value": "asd",
              "raw": "\"asd\""
            }
          }
        },
        "property": {
          "type": "Identifier",
          "span": {
            "start": 624,
            "end": 625,
            "ctxt": 0
          },
          "value": "b",
          "optional": false
        }
      }
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 638,
        "end": 693,
        "ctxt": 0
      },
      "kind": "const",
      "declare": false,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 644,
            "end": 692,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 644,
              "end": 645,
              "ctxt": 0
            },
            "value": "d",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 645,
                "end": 688,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 647,
                  "end": 688,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsIndexSignature",
                    "params": [
                      {
                        "type": "Identifier",
                        "span": {
                          "start": 650,
                          "end": 661,
                          "ctxt": 0
                        },
                        "value": "key",
                        "optional": false,
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 653,
                            "end": 661,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 655,
                              "end": 661,
                              "ctxt": 0
                            },
                            "kind": "string"
                          }
                        }
                      }
                    ],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 662,
                        "end": 686,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsTypeLiteral",
                        "span": {
                          "start": 664,
                          "end": 686,
                          "ctxt": 0
                        },
                        "members": [
                          {
                            "type": "TsPropertySignature",
                            "span": {
                              "start": 665,
                              "end": 675,
                              "ctxt": 0
                            },
                            "readonly": false,
                            "key": {
                              "type": "Identifier",
                              "span": {
                                "start": 665,
                                "end": 666,
                                "ctxt": 0
                              },
                              "value": "a",
                              "optional": false
                            },
                            "computed": false,
                            "optional": false,
                            "init": null,
                            "params": [],
                            "typeAnnotation": {
                              "type": "TsTypeAnnotation",
                              "span": {
                                "start": 666,
                                "end": 674,
                                "ctxt": 0
                              },
                              "typeAnnotation": {
                                "type": "TsKeywordType",
                                "span": {
                                  "start": 668,
                                  "end": 674,
                                  "ctxt": 0
                                },
                                "kind": "string"
                              }
                            },
                            "typeParams": null
                          },
                          {
                            "type": "TsPropertySignature",
                            "span": {
                              "start": 676,
                              "end": 685,
                              "ctxt": 0
                            },
                            "readonly": false,
                            "key": {
                              "type": "Identifier",
                              "span": {
                                "start": 676,
                                "end": 677,
                                "ctxt": 0
                              },
                              "value": "b",
                              "optional": false
                            },
                            "computed": false,
                            "optional": false,
                            "init": null,
                            "params": [],
                            "typeAnnotation": {
                              "type": "TsTypeAnnotation",
                              "span": {
                                "start": 677,
                                "end": 685,
                                "ctxt": 0
                              },
                              "typeAnnotation": {
                                "type": "TsKeywordType",
                                "span": {
                                  "start": 679,
                                  "end": 685,
                                  "ctxt": 0
                                },
                                "kind": "string"
                              }
                            },
                            "typeParams": null
                          }
                        ]
                      }
                    },
                    "readonly": false,
                    "static": false,
                    "span": {
                      "start": 649,
                      "end": 686,
                      "ctxt": 0
                    }
                  }
                ]
              }
            }
          },
          "init": {
            "type": "Identifier",
            "span": {
              "start": 691,
              "end": 692,
              "ctxt": 0
            },
            "value": "q",
            "optional": false
          },
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 727,
        "end": 773,
        "ctxt": 0
      },
      "kind": "let",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 739,
            "end": 772,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 739,
              "end": 741,
              "ctxt": 0
            },
            "value": "ss",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 741,
                "end": 772,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsIntersectionType",
                "span": {
                  "start": 743,
                  "end": 772,
                  "ctxt": 0
                },
                "types": [
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 743,
                      "end": 756,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsPropertySignature",
                        "span": {
                          "start": 745,
                          "end": 754,
                          "ctxt": 0
                        },
                        "readonly": false,
                        "key": {
                          "type": "Identifier",
                          "span": {
                            "start": 745,
                            "end": 746,
                            "ctxt": 0
                          },
                          "value": "a",
                          "optional": false
                        },
                        "computed": false,
                        "optional": false,
                        "init": null,
                        "params": [],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 746,
                            "end": 754,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 748,
                              "end": 754,
                              "ctxt": 0
                            },
                            "kind": "string"
                          }
                        },
                        "typeParams": null
                      }
                    ]
                  },
                  {
                    "type": "TsTypeLiteral",
                    "span": {
                      "start": 759,
                      "end": 772,
                      "ctxt": 0
                    },
                    "members": [
                      {
                        "type": "TsPropertySignature",
                        "span": {
                          "start": 761,
                          "end": 770,
                          "ctxt": 0
                        },
                        "readonly": false,
                        "key": {
                          "type": "Identifier",
                          "span": {
                            "start": 761,
                            "end": 762,
                            "ctxt": 0
                          },
                          "value": "b",
                          "optional": false
                        },
                        "computed": false,
                        "optional": false,
                        "init": null,
                        "params": [],
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 762,
                            "end": 770,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 764,
                              "end": 770,
                              "ctxt": 0
                            },
                            "kind": "number"
                          }
                        },
                        "typeParams": null
                      }
                    ]
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "VariableDeclaration",
      "span": {
        "start": 774,
        "end": 816,
        "ctxt": 0
      },
      "kind": "let",
      "declare": true,
      "declarations": [
        {
          "type": "VariableDeclarator",
          "span": {
            "start": 786,
            "end": 815,
            "ctxt": 0
          },
          "id": {
            "type": "Identifier",
            "span": {
              "start": 786,
              "end": 788,
              "ctxt": 0
            },
            "value": "tt",
            "optional": false,
            "typeAnnotation": {
              "type": "TsTypeAnnotation",
              "span": {
                "start": 788,
                "end": 815,
                "ctxt": 0
              },
              "typeAnnotation": {
                "type": "TsTypeLiteral",
                "span": {
                  "start": 790,
                  "end": 815,
                  "ctxt": 0
                },
                "members": [
                  {
                    "type": "TsIndexSignature",
                    "params": [
                      {
                        "type": "Identifier",
                        "span": {
                          "start": 793,
                          "end": 804,
                          "ctxt": 0
                        },
                        "value": "key",
                        "optional": false,
                        "typeAnnotation": {
                          "type": "TsTypeAnnotation",
                          "span": {
                            "start": 796,
                            "end": 804,
                            "ctxt": 0
                          },
                          "typeAnnotation": {
                            "type": "TsKeywordType",
                            "span": {
                              "start": 798,
                              "end": 804,
                              "ctxt": 0
                            },
                            "kind": "string"
                          }
                        }
                      }
                    ],
                    "typeAnnotation": {
                      "type": "TsTypeAnnotation",
                      "span": {
                        "start": 805,
                        "end": 813,
                        "ctxt": 0
                      },
                      "typeAnnotation": {
                        "type": "TsKeywordType",
                        "span": {
                          "start": 807,
                          "end": 813,
                          "ctxt": 0
                        },
                        "kind": "string"
                      }
                    },
                    "readonly": false,
                    "static": false,
                    "span": {
                      "start": 792,
                      "end": 813,
                      "ctxt": 0
                    }
                  }
                ]
              }
            }
          },
          "init": null,
          "definite": false
        }
      ]
    },
    {
      "type": "ExpressionStatement",
      "span": {
        "start": 817,
        "end": 825,
        "ctxt": 0
      },
      "expression": {
        "type": "AssignmentExpression",
        "span": {
          "start": 817,
          "end": 824,
          "ctxt": 0
        },
        "operator": "=",
        "left": {
          "type": "Identifier",
          "span": {
            "start": 817,
            "end": 819,
            "ctxt": 0
          },
          "value": "tt",
          "optional": false,
          "typeAnnotation": null
        },
        "right": {
          "type": "Identifier",
          "span": {
            "start": 822,
            "end": 824,
            "ctxt": 0
          },
          "value": "ss",
          "optional": false
        }
      }
    }
  ],
  "interpreter": null
}