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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": "a",
12            "decorators": [],
13            "loc": {
14              "start": {
15                "line": 17,
16                "column": 5
17              },
18              "end": {
19                "line": 17,
20                "column": 6
21              }
22            }
23          },
24          "init": {
25            "type": "ArrayExpression",
26            "elements": [
27              {
28                "type": "NumberLiteral",
29                "value": 0,
30                "loc": {
31                  "start": {
32                    "line": 17,
33                    "column": 10
34                  },
35                  "end": {
36                    "line": 17,
37                    "column": 11
38                  }
39                }
40              },
41              {
42                "type": "NumberLiteral",
43                "value": 1,
44                "loc": {
45                  "start": {
46                    "line": 17,
47                    "column": 13
48                  },
49                  "end": {
50                    "line": 17,
51                    "column": 14
52                  }
53                }
54              },
55              {
56                "type": "NumberLiteral",
57                "value": 2,
58                "loc": {
59                  "start": {
60                    "line": 17,
61                    "column": 16
62                  },
63                  "end": {
64                    "line": 17,
65                    "column": 17
66                  }
67                }
68              },
69              {
70                "type": "NumberLiteral",
71                "value": 3,
72                "loc": {
73                  "start": {
74                    "line": 17,
75                    "column": 19
76                  },
77                  "end": {
78                    "line": 17,
79                    "column": 20
80                  }
81                }
82              },
83              {
84                "type": "NumberLiteral",
85                "value": 4,
86                "loc": {
87                  "start": {
88                    "line": 17,
89                    "column": 22
90                  },
91                  "end": {
92                    "line": 17,
93                    "column": 23
94                  }
95                }
96              }
97            ],
98            "loc": {
99              "start": {
100                "line": 17,
101                "column": 9
102              },
103              "end": {
104                "line": 17,
105                "column": 24
106              }
107            }
108          },
109          "loc": {
110            "start": {
111              "line": 17,
112              "column": 5
113            },
114            "end": {
115              "line": 17,
116              "column": 24
117            }
118          }
119        }
120      ],
121      "kind": "var",
122      "loc": {
123        "start": {
124          "line": 17,
125          "column": 1
126        },
127        "end": {
128          "line": 17,
129          "column": 25
130        }
131      }
132    },
133    {
134      "type": "VariableDeclaration",
135      "declarations": [
136        {
137          "type": "VariableDeclarator",
138          "id": {
139            "type": "Identifier",
140            "name": "b",
141            "typeAnnotation": {
142              "type": "TSBooleanKeyword",
143              "loc": {
144                "start": {
145                  "line": 18,
146                  "column": 8
147                },
148                "end": {
149                  "line": 18,
150                  "column": 15
151                }
152              }
153            },
154            "decorators": [],
155            "loc": {
156              "start": {
157                "line": 18,
158                "column": 5
159              },
160              "end": {
161                "line": 18,
162                "column": 6
163              }
164            }
165          },
166          "init": null,
167          "loc": {
168            "start": {
169              "line": 18,
170              "column": 5
171            },
172            "end": {
173              "line": 18,
174              "column": 6
175            }
176          }
177        }
178      ],
179      "kind": "var",
180      "loc": {
181        "start": {
182          "line": 18,
183          "column": 1
184        },
185        "end": {
186          "line": 18,
187          "column": 16
188        }
189      }
190    },
191    {
192      "type": "ExpressionStatement",
193      "expression": {
194        "type": "AssignmentExpression",
195        "operator": "=",
196        "left": {
197          "type": "Identifier",
198          "name": "b",
199          "decorators": [],
200          "loc": {
201            "start": {
202              "line": 19,
203              "column": 1
204            },
205            "end": {
206              "line": 19,
207              "column": 2
208            }
209          }
210        },
211        "right": {
212          "type": "MemberExpression",
213          "object": {
214            "type": "Identifier",
215            "name": "a",
216            "decorators": [],
217            "loc": {
218              "start": {
219                "line": 19,
220                "column": 5
221              },
222              "end": {
223                "line": 19,
224                "column": 6
225              }
226            }
227          },
228          "property": {
229            "type": "NumberLiteral",
230            "value": 5,
231            "loc": {
232              "start": {
233                "line": 19,
234                "column": 7
235              },
236              "end": {
237                "line": 19,
238                "column": 8
239              }
240            }
241          },
242          "computed": true,
243          "optional": false,
244          "loc": {
245            "start": {
246              "line": 19,
247              "column": 5
248            },
249            "end": {
250              "line": 19,
251              "column": 9
252            }
253          }
254        },
255        "loc": {
256          "start": {
257            "line": 19,
258            "column": 1
259          },
260          "end": {
261            "line": 19,
262            "column": 9
263          }
264        }
265      },
266      "loc": {
267        "start": {
268          "line": 19,
269          "column": 1
270        },
271        "end": {
272          "line": 19,
273          "column": 10
274        }
275      }
276    }
277  ],
278  "loc": {
279    "start": {
280      "line": 1,
281      "column": 1
282    },
283    "end": {
284      "line": 20,
285      "column": 1
286    }
287  }
288}
289TypeError: Type 'number' is not assignable to type 'boolean'. [member_expression_64.ts:19:1]
290