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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            "typeAnnotation": {
13              "type": "TSUnionType",
14              "types": [
15                {
16                  "type": "TSTypeLiteral",
17                  "members": [
18                    {
19                      "type": "TSPropertySignature",
20                      "computed": false,
21                      "optional": false,
22                      "readonly": false,
23                      "key": {
24                        "type": "Identifier",
25                        "name": "a",
26                        "decorators": [],
27                        "loc": {
28                          "start": {
29                            "line": 17,
30                            "column": 10
31                          },
32                          "end": {
33                            "line": 17,
34                            "column": 11
35                          }
36                        }
37                      },
38                      "typeAnnotation": {
39                        "type": "TSTypeLiteral",
40                        "members": [
41                          {
42                            "type": "TSPropertySignature",
43                            "computed": false,
44                            "optional": false,
45                            "readonly": false,
46                            "key": {
47                              "type": "Identifier",
48                              "name": "b",
49                              "decorators": [],
50                              "loc": {
51                                "start": {
52                                  "line": 17,
53                                  "column": 15
54                                },
55                                "end": {
56                                  "line": 17,
57                                  "column": 16
58                                }
59                              }
60                            },
61                            "typeAnnotation": {
62                              "type": "TSStringKeyword",
63                              "loc": {
64                                "start": {
65                                  "line": 17,
66                                  "column": 18
67                                },
68                                "end": {
69                                  "line": 17,
70                                  "column": 24
71                                }
72                              }
73                            },
74                            "loc": {
75                              "start": {
76                                "line": 17,
77                                "column": 15
78                              },
79                              "end": {
80                                "line": 17,
81                                "column": 25
82                              }
83                            }
84                          },
85                          {
86                            "type": "TSPropertySignature",
87                            "computed": false,
88                            "optional": false,
89                            "readonly": false,
90                            "key": {
91                              "type": "Identifier",
92                              "name": "c",
93                              "decorators": [],
94                              "loc": {
95                                "start": {
96                                  "line": 17,
97                                  "column": 26
98                                },
99                                "end": {
100                                  "line": 17,
101                                  "column": 27
102                                }
103                              }
104                            },
105                            "typeAnnotation": {
106                              "type": "TSNumberKeyword",
107                              "loc": {
108                                "start": {
109                                  "line": 17,
110                                  "column": 29
111                                },
112                                "end": {
113                                  "line": 17,
114                                  "column": 35
115                                }
116                              }
117                            },
118                            "loc": {
119                              "start": {
120                                "line": 17,
121                                "column": 26
122                              },
123                              "end": {
124                                "line": 17,
125                                "column": 37
126                              }
127                            }
128                          }
129                        ],
130                        "loc": {
131                          "start": {
132                            "line": 17,
133                            "column": 13
134                          },
135                          "end": {
136                            "line": 17,
137                            "column": 37
138                          }
139                        }
140                      },
141                      "loc": {
142                        "start": {
143                          "line": 17,
144                          "column": 10
145                        },
146                        "end": {
147                          "line": 17,
148                          "column": 39
149                        }
150                      }
151                    }
152                  ],
153                  "loc": {
154                    "start": {
155                      "line": 17,
156                      "column": 8
157                    },
158                    "end": {
159                      "line": 17,
160                      "column": 39
161                    }
162                  }
163                },
164                {
165                  "type": "TSNumberKeyword",
166                  "loc": {
167                    "start": {
168                      "line": 17,
169                      "column": 42
170                    },
171                    "end": {
172                      "line": 17,
173                      "column": 48
174                    }
175                  }
176                }
177              ],
178              "loc": {
179                "start": {
180                  "line": 17,
181                  "column": 8
182                },
183                "end": {
184                  "line": 17,
185                  "column": 48
186                }
187              }
188            },
189            "decorators": [],
190            "loc": {
191              "start": {
192                "line": 17,
193                "column": 5
194              },
195              "end": {
196                "line": 17,
197                "column": 6
198              }
199            }
200          },
201          "init": null,
202          "loc": {
203            "start": {
204              "line": 17,
205              "column": 5
206            },
207            "end": {
208              "line": 17,
209              "column": 6
210            }
211          }
212        }
213      ],
214      "kind": "var",
215      "loc": {
216        "start": {
217          "line": 17,
218          "column": 1
219        },
220        "end": {
221          "line": 17,
222          "column": 49
223        }
224      }
225    },
226    {
227      "type": "VariableDeclaration",
228      "declarations": [
229        {
230          "type": "VariableDeclarator",
231          "id": {
232            "type": "ObjectPattern",
233            "properties": [
234              {
235                "type": "Property",
236                "method": false,
237                "shorthand": false,
238                "computed": false,
239                "key": {
240                  "type": "Identifier",
241                  "name": "a",
242                  "decorators": [],
243                  "loc": {
244                    "start": {
245                      "line": 18,
246                      "column": 7
247                    },
248                    "end": {
249                      "line": 18,
250                      "column": 8
251                    }
252                  }
253                },
254                "value": {
255                  "type": "ObjectPattern",
256                  "properties": [
257                    {
258                      "type": "Property",
259                      "method": false,
260                      "shorthand": true,
261                      "computed": false,
262                      "key": {
263                        "type": "Identifier",
264                        "name": "b",
265                        "decorators": [],
266                        "loc": {
267                          "start": {
268                            "line": 18,
269                            "column": 12
270                          },
271                          "end": {
272                            "line": 18,
273                            "column": 13
274                          }
275                        }
276                      },
277                      "value": {
278                        "type": "Identifier",
279                        "name": "b",
280                        "decorators": [],
281                        "loc": {
282                          "start": {
283                            "line": 18,
284                            "column": 12
285                          },
286                          "end": {
287                            "line": 18,
288                            "column": 13
289                          }
290                        }
291                      },
292                      "kind": "init",
293                      "loc": {
294                        "start": {
295                          "line": 18,
296                          "column": 12
297                        },
298                        "end": {
299                          "line": 18,
300                          "column": 13
301                        }
302                      }
303                    },
304                    {
305                      "type": "Property",
306                      "method": false,
307                      "shorthand": true,
308                      "computed": false,
309                      "key": {
310                        "type": "Identifier",
311                        "name": "c",
312                        "decorators": [],
313                        "loc": {
314                          "start": {
315                            "line": 18,
316                            "column": 15
317                          },
318                          "end": {
319                            "line": 18,
320                            "column": 16
321                          }
322                        }
323                      },
324                      "value": {
325                        "type": "Identifier",
326                        "name": "c",
327                        "decorators": [],
328                        "loc": {
329                          "start": {
330                            "line": 18,
331                            "column": 15
332                          },
333                          "end": {
334                            "line": 18,
335                            "column": 16
336                          }
337                        }
338                      },
339                      "kind": "init",
340                      "loc": {
341                        "start": {
342                          "line": 18,
343                          "column": 15
344                        },
345                        "end": {
346                          "line": 18,
347                          "column": 16
348                        }
349                      }
350                    }
351                  ],
352                  "loc": {
353                    "start": {
354                      "line": 18,
355                      "column": 10
356                    },
357                    "end": {
358                      "line": 18,
359                      "column": 18
360                    }
361                  }
362                },
363                "kind": "init",
364                "loc": {
365                  "start": {
366                    "line": 18,
367                    "column": 7
368                  },
369                  "end": {
370                    "line": 18,
371                    "column": 18
372                  }
373                }
374              }
375            ],
376            "loc": {
377              "start": {
378                "line": 18,
379                "column": 5
380              },
381              "end": {
382                "line": 18,
383                "column": 20
384              }
385            }
386          },
387          "init": {
388            "type": "Identifier",
389            "name": "a",
390            "decorators": [],
391            "loc": {
392              "start": {
393                "line": 18,
394                "column": 23
395              },
396              "end": {
397                "line": 18,
398                "column": 24
399              }
400            }
401          },
402          "loc": {
403            "start": {
404              "line": 18,
405              "column": 5
406            },
407            "end": {
408              "line": 18,
409              "column": 24
410            }
411          }
412        }
413      ],
414      "kind": "var",
415      "loc": {
416        "start": {
417          "line": 18,
418          "column": 1
419        },
420        "end": {
421          "line": 18,
422          "column": 25
423        }
424      }
425    }
426  ],
427  "loc": {
428    "start": {
429      "line": 1,
430      "column": 1
431    },
432    "end": {
433      "line": 18,
434      "column": 25
435    }
436  }
437}
438TypeError: Property a does not exist on type { a: { b: string; c: number; }; } | number. [objectDestructuring22.ts:18:5]
439