{
  "type": "File",
  "start": 0,
  "end": 60,
  "loc": {
    "start": {
      "line": 1,
      "column": 0
    },
    "end": {
      "line": 5,
      "column": 1
    }
  },
  "errors": [
    "SyntaxError: 'arguments' is not allowed in class field initializer (3:16)"
  ],
  "program": {
    "type": "Program",
    "start": 0,
    "end": 60,
    "loc": {
      "start": {
        "line": 1,
        "column": 0
      },
      "end": {
        "line": 5,
        "column": 1
      }
    },
    "sourceType": "script",
    "interpreter": null,
    "body": [
      {
        "type": "FunctionDeclaration",
        "start": 0,
        "end": 60,
        "loc": {
          "start": {
            "line": 1,
            "column": 0
          },
          "end": {
            "line": 5,
            "column": 1
          }
        },
        "id": {
          "type": "Identifier",
          "start": 9,
          "end": 11,
          "loc": {
            "start": {
              "line": 1,
              "column": 9
            },
            "end": {
              "line": 1,
              "column": 11
            },
            "identifierName": "fn"
          },
          "name": "fn"
        },
        "generator": false,
        "async": false,
        "params": [],
        "body": {
          "type": "BlockStatement",
          "start": 14,
          "end": 60,
          "loc": {
            "start": {
              "line": 1,
              "column": 14
            },
            "end": {
              "line": 5,
              "column": 1
            }
          },
          "body": [
            {
              "type": "ClassDeclaration",
              "start": 18,
              "end": 58,
              "loc": {
                "start": {
                  "line": 2,
                  "column": 2
                },
                "end": {
                  "line": 4,
                  "column": 3
                }
              },
              "id": {
                "type": "Identifier",
                "start": 24,
                "end": 25,
                "loc": {
                  "start": {
                    "line": 2,
                    "column": 8
                  },
                  "end": {
                    "line": 2,
                    "column": 9
                  },
                  "identifierName": "A"
                },
                "name": "A"
              },
              "superClass": null,
              "body": {
                "type": "ClassBody",
                "start": 26,
                "end": 58,
                "loc": {
                  "start": {
                    "line": 2,
                    "column": 10
                  },
                  "end": {
                    "line": 4,
                    "column": 3
                  }
                },
                "body": [
                  {
                    "type": "ClassProperty",
                    "start": 32,
                    "end": 54,
                    "loc": {
                      "start": {
                        "line": 3,
                        "column": 4
                      },
                      "end": {
                        "line": 3,
                        "column": 26
                      }
                    },
                    "static": false,
                    "key": {
                      "type": "Identifier",
                      "start": 32,
                      "end": 35,
                      "loc": {
                        "start": {
                          "line": 3,
                          "column": 4
                        },
                        "end": {
                          "line": 3,
                          "column": 7
                        },
                        "identifierName": "foo"
                      },
                      "name": "foo"
                    },
                    "computed": false,
                    "value": {
                      "type": "ArrowFunctionExpression",
                      "start": 38,
                      "end": 53,
                      "loc": {
                        "start": {
                          "line": 3,
                          "column": 10
                        },
                        "end": {
                          "line": 3,
                          "column": 25
                        }
                      },
                      "id": null,
                      "generator": false,
                      "async": false,
                      "params": [],
                      "body": {
                        "type": "Identifier",
                        "start": 44,
                        "end": 53,
                        "loc": {
                          "start": {
                            "line": 3,
                            "column": 16
                          },
                          "end": {
                            "line": 3,
                            "column": 25
                          },
                          "identifierName": "arguments"
                        },
                        "name": "arguments"
                      }
                    }
                  }
                ]
              }
            }
          ],
          "directives": []
        }
      }
    ],
    "directives": []
  }
}