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1{
2  "type": "Program",
3  "statements": [
4    {
5      "type": "VariableDeclaration",
6      "declarations": [
7        {
8          "type": "VariableDeclarator",
9          "id": {
10            "type": "Identifier",
11            "name": "foo",
12            "typeAnnotation": {
13              "type": "TSConstructorType",
14              "params": [],
15              "returnType": {
16                "type": "TSBooleanKeyword",
17                "loc": {
18                  "start": {
19                    "line": 17,
20                    "column": 20
21                  },
22                  "end": {
23                    "line": 17,
24                    "column": 27
25                  }
26                }
27              },
28              "loc": {
29                "start": {
30                  "line": 17,
31                  "column": 10
32                },
33                "end": {
34                  "line": 17,
35                  "column": 27
36                }
37              }
38            },
39            "decorators": [],
40            "loc": {
41              "start": {
42                "line": 17,
43                "column": 5
44              },
45              "end": {
46                "line": 17,
47                "column": 8
48              }
49            }
50          },
51          "init": null,
52          "loc": {
53            "start": {
54              "line": 17,
55              "column": 5
56            },
57            "end": {
58              "line": 17,
59              "column": 8
60            }
61          }
62        }
63      ],
64      "kind": "var",
65      "loc": {
66        "start": {
67          "line": 17,
68          "column": 1
69        },
70        "end": {
71          "line": 17,
72          "column": 28
73        }
74      }
75    },
76    {
77      "type": "VariableDeclaration",
78      "declarations": [
79        {
80          "type": "VariableDeclarator",
81          "id": {
82            "type": "Identifier",
83            "name": "a",
84            "decorators": [],
85            "loc": {
86              "start": {
87                "line": 18,
88                "column": 5
89              },
90              "end": {
91                "line": 18,
92                "column": 6
93              }
94            }
95          },
96          "init": {
97            "type": "NewExpression",
98            "callee": {
99              "type": "Identifier",
100              "name": "foo",
101              "decorators": [],
102              "loc": {
103                "start": {
104                  "line": 18,
105                  "column": 13
106                },
107                "end": {
108                  "line": 18,
109                  "column": 16
110                }
111              }
112            },
113            "arguments": [],
114            "loc": {
115              "start": {
116                "line": 18,
117                "column": 9
118              },
119              "end": {
120                "line": 18,
121                "column": 18
122              }
123            }
124          },
125          "loc": {
126            "start": {
127              "line": 18,
128              "column": 5
129            },
130            "end": {
131              "line": 18,
132              "column": 18
133            }
134          }
135        }
136      ],
137      "kind": "var",
138      "loc": {
139        "start": {
140          "line": 18,
141          "column": 1
142        },
143        "end": {
144          "line": 18,
145          "column": 19
146        }
147      }
148    },
149    {
150      "type": "ExpressionStatement",
151      "expression": {
152        "type": "AssignmentExpression",
153        "operator": "=",
154        "left": {
155          "type": "Identifier",
156          "name": "a",
157          "decorators": [],
158          "loc": {
159            "start": {
160              "line": 19,
161              "column": 1
162            },
163            "end": {
164              "line": 19,
165              "column": 2
166            }
167          }
168        },
169        "right": {
170          "type": "StringLiteral",
171          "value": "foo",
172          "loc": {
173            "start": {
174              "line": 19,
175              "column": 5
176            },
177            "end": {
178              "line": 19,
179              "column": 10
180            }
181          }
182        },
183        "loc": {
184          "start": {
185            "line": 19,
186            "column": 1
187          },
188          "end": {
189            "line": 19,
190            "column": 10
191          }
192        }
193      },
194      "loc": {
195        "start": {
196          "line": 19,
197          "column": 1
198        },
199        "end": {
200          "line": 19,
201          "column": 11
202        }
203      }
204    }
205  ],
206  "loc": {
207    "start": {
208      "line": 1,
209      "column": 1
210    },
211    "end": {
212      "line": 20,
213      "column": 1
214    }
215  }
216}
217TypeError: Type 'string' is not assignable to type 'boolean'. [new_expression_162.ts:19:1]
218