{
  "type": "Program",
  "statements": [
    {
      "type": "VariableDeclaration",
      "declarations": [
        {
          "type": "VariableDeclarator",
          "id": {
            "type": "Identifier",
            "name": "a",
            "decorators": [],
            "loc": {
              "start": {
                "line": 1,
                "column": 5
              },
              "end": {
                "line": 1,
                "column": 6
              }
            }
          },
          "init": {
            "type": "TSAsExpression",
            "expression": {
              "type": "ObjectExpression",
              "properties": [
                {
                  "type": "Property",
                  "method": false,
                  "shorthand": false,
                  "computed": true,
                  "key": {
                    "type": "BinaryExpression",
                    "operator": "+",
                    "left": {
                      "type": "StringLiteral",
                      "value": "",
                      "loc": {
                        "start": {
                          "line": 1,
                          "column": 11
                        },
                        "end": {
                          "line": 1,
                          "column": 16
                        }
                      }
                    },
                    "right": {
                      "type": "StringLiteral",
                      "value": "",
                      "loc": {
                        "start": {
                          "line": 1,
                          "column": 17
                        },
                        "end": {
                          "line": 1,
                          "column": 22
                        }
                      }
                    },
                    "loc": {
                      "start": {
                        "line": 1,
                        "column": 11
                      },
                      "end": {
                        "line": 1,
                        "column": 22
                      }
                    }
                  },
                  "value": {
                    "type": "NumberLiteral",
                    "value": 3,
                    "loc": {
                      "start": {
                        "line": 1,
                        "column": 24
                      },
                      "end": {
                        "line": 1,
                        "column": 25
                      }
                    }
                  },
                  "kind": "init",
                  "loc": {
                    "start": {
                      "line": 1,
                      "column": 10
                    },
                    "end": {
                      "line": 1,
                      "column": 25
                    }
                  }
                }
              ],
              "loc": {
                "start": {
                  "line": 1,
                  "column": 9
                },
                "end": {
                  "line": 1,
                  "column": 26
                }
              }
            },
            "typeAnnotation": {
              "type": "TSTypeReference",
              "typeName": {
                "type": "Identifier",
                "name": "const",
                "decorators": [],
                "loc": {
                  "start": {
                    "line": 1,
                    "column": 30
                  },
                  "end": {
                    "line": 1,
                    "column": 35
                  }
                }
              },
              "loc": {
                "start": {
                  "line": 1,
                  "column": 30
                },
                "end": {
                  "line": 1,
                  "column": 35
                }
              }
            },
            "loc": {
              "start": {
                "line": 1,
                "column": 9
              },
              "end": {
                "line": 1,
                "column": 36
              }
            }
          },
          "loc": {
            "start": {
              "line": 1,
              "column": 5
            },
            "end": {
              "line": 1,
              "column": 36
            }
          }
        }
      ],
      "kind": "var",
      "loc": {
        "start": {
          "line": 1,
          "column": 1
        },
        "end": {
          "line": 1,
          "column": 36
        }
      }
    },
    {
      "type": "ExpressionStatement",
      "expression": {
        "type": "AssignmentExpression",
        "operator": "=",
        "left": {
          "type": "MemberExpression",
          "object": {
            "type": "Identifier",
            "name": "a",
            "decorators": [],
            "loc": {
              "start": {
                "line": 3,
                "column": 1
              },
              "end": {
                "line": 3,
                "column": 2
              }
            }
          },
          "property": {
            "type": "Identifier",
            "name": "baz",
            "decorators": [],
            "loc": {
              "start": {
                "line": 3,
                "column": 3
              },
              "end": {
                "line": 3,
                "column": 6
              }
            }
          },
          "computed": false,
          "optional": false,
          "loc": {
            "start": {
              "line": 3,
              "column": 1
            },
            "end": {
              "line": 3,
              "column": 6
            }
          }
        },
        "right": {
          "type": "NumberLiteral",
          "value": 3,
          "loc": {
            "start": {
              "line": 3,
              "column": 9
            },
            "end": {
              "line": 3,
              "column": 10
            }
          }
        },
        "loc": {
          "start": {
            "line": 3,
            "column": 1
          },
          "end": {
            "line": 3,
            "column": 10
          }
        }
      },
      "loc": {
        "start": {
          "line": 3,
          "column": 1
        },
        "end": {
          "line": 3,
          "column": 11
        }
      }
    }
  ],
  "loc": {
    "start": {
      "line": 1,
      "column": 1
    },
    "end": {
      "line": 3,
      "column": 11
    }
  }
}
TypeError: Index signature in type '{ readonly [x: string]: 3; }' only permits reading. [member_expression_81.ts:3:1]
