{
  "type": "File",
  "start": 0,
  "end": 20,
  "loc": {
    "start": {
      "line": 1,
      "column": 0
    },
    "end": {
      "line": 1,
      "column": 20
    }
  },
  "program": {
    "type": "Program",
    "start": 0,
    "end": 20,
    "loc": {
      "start": {
        "line": 1,
        "column": 0
      },
      "end": {
        "line": 1,
        "column": 20
      }
    },
    "sourceType": "module",
    "interpreter": null,
    "body": [
      {
        "type": "ExpressionStatement",
        "start": 0,
        "end": 20,
        "loc": {
          "start": {
            "line": 1,
            "column": 0
          },
          "end": {
            "line": 1,
            "column": 20
          }
        },
        "expression": {
          "type": "AssignmentExpression",
          "start": 0,
          "end": 20,
          "loc": {
            "start": {
              "line": 1,
              "column": 0
            },
            "end": {
              "line": 1,
              "column": 20
            }
          },
          "operator": "=",
          "left": {
            "type": "Identifier",
            "start": 0,
            "end": 1,
            "loc": {
              "start": {
                "line": 1,
                "column": 0
              },
              "end": {
                "line": 1,
                "column": 1
              },
              "identifierName": "a"
            },
            "name": "a"
          },
          "right": {
            "type": "FunctionExpression",
            "start": 2,
            "end": 20,
            "loc": {
              "start": {
                "line": 1,
                "column": 2
              },
              "end": {
                "line": 1,
                "column": 20
              }
            },
            "id": null,
            "generator": false,
            "async": false,
            "typeParameters": {
              "type": "TypeParameterDeclaration",
              "start": 10,
              "end": 15,
              "loc": {
                "start": {
                  "line": 1,
                  "column": 10
                },
                "end": {
                  "line": 1,
                  "column": 15
                }
              },
              "params": [
                {
                  "type": "TypeParameter",
                  "start": 11,
                  "end": 12,
                  "loc": {
                    "start": {
                      "line": 1,
                      "column": 11
                    },
                    "end": {
                      "line": 1,
                      "column": 12
                    }
                  },
                  "name": "T",
                  "variance": null
                },
                {
                  "type": "TypeParameter",
                  "start": 13,
                  "end": 14,
                  "loc": {
                    "start": {
                      "line": 1,
                      "column": 13
                    },
                    "end": {
                      "line": 1,
                      "column": 14
                    }
                  },
                  "name": "S",
                  "variance": null
                }
              ]
            },
            "params": [],
            "body": {
              "type": "BlockStatement",
              "start": 18,
              "end": 20,
              "loc": {
                "start": {
                  "line": 1,
                  "column": 18
                },
                "end": {
                  "line": 1,
                  "column": 20
                }
              },
              "body": [],
              "directives": []
            }
          }
        }
      }
    ],
    "directives": []
  }
}